Anatomical Diversity in Femur bones: Understanding the Morphological Variability for Surgical and Prosthetic Applications / Diversidad Anatómica en Huesos Fémur: Comprensión de la Variabilidad Morfológica para Aplicaciones Quirúrgicas y Protésicas

SUMMARY: The femur, the body's longest bone, plays a critical role in orthopaedics and radiology. Understanding its anatomy, particularly the neck-shaft angle (NSA), is vital for diagnosing bone issues and designing hip implants. While some Asian populations' femur measurements have been studied, there is a research gap concerning Sri Lankans. This study aimed to fill this gap by examining the proximal femur's anatomy in the Sri Lankan population. We analysed 45 adult human femurs (26 right, 19 left) of unknown sex, ethically sourced from the University of Sri Jayewardenepura. Femurs with fractures or pathologies were excluded. Precise measurements were recorded using digital vernier callipers, with millimetre accuracy. Parameters included mean femoral length, vertical and transverse femoral head diameters, neck axis and neck length. Each measurement was taken three times to minimize subjectivity. Right femurs had a mean length of 42.8 mm (SD±2.64), while left femurs measured 43.53 mm (SD±3.27). Mean NSA was 125.78º (SD±4.45) for left femurs and 127.59º (SD±2.06) for right. Mean femoral head diameters were 4.09mm (SD±0.30) (right) and 4.12mm (SD±0.31) (left). Mean anterior neck lengths of the right and left were 2.61 (SD±0.54) and 2.71(SD±0.50) respectively. Comparing our findings with other Asian populations highlighted significant variations in femur measurements. These discrepancies emphasize the need for population-specific data for orthopaedic interventions and raise questions about the suitability of imported prosthetics. Differences in femur length, neck length, and NSA between sides suggest potential challenges in using implants designed for one side on the other. This study underscores the necessity of population-specific data in orthopaedics, as femur measurements differ even among Asian populations. Further research and statistical analysis are essential for tailoring orthopaedic solutions to individual populations. The findings also suggest a potential need for locally manufactured prosthetics to better suit the Sri Lankan population.

El fémur, el hueso más largo del cuerpo, desempeña un papel fundamental en ortopedia y radiología. Comprender su anatomía, en particular el ángulo cuello-diáfisis (NSA), es vital para diagnosticar problemas óseos y diseñar implantes de cadera. Si bien se han estudiado las medidas del fémur de algunas poblaciones asiáticas, existe un vacío en la investigación sobre los habitantes de Sri Lanka. Este estudio tuvo como objetivo examinar la anatomía del fémur proximal en la población de Sri Lanka. Analizamos 45 fémures humanos adultos (26 derechos, 19 izquierdos) de sexo desconocido, obtenidos éticamente de la Universidad de Sri Jayewardenepura. Se excluyeron fémures con fracturas o patologías. Se registraron mediciones precisas utilizando calibradores vernier digitales, con precisión milimétrica. Los parámetros incluyeron la longitud femoral media, los diámetros vertical y transversal de la cabeza femoral, el eje del cuello y la longitud del cuello. Cada medición se tomó tres veces para minimizar la subjetividad. Los fémures derechos tuvieron una longitud media de 42,8 mm (DE ± 2,64), mientras que los fémures izquierdos midieron 43,53 mm (DE ± 3,27). La NSA media fue de 125,78º (DE±4,45) para el fémur izquierdo y de 127,59º (DE±2,06) para el derecho. Los diámetros medios de la cabeza femoral fueron 4,09 mm (DE ± 0,30) (derecha) y 4,12 mm (DE ± 0,31) (izquierda). Las longitudes medias del cuello anterior de la derecha y la izquierda fueron 2,61 (DE ± 0,54) y 2,71 (DE ± 0,50) respectivamente. La comparación de nuestros hallazgos con otras poblaciones asiáticas destacó variaciones significativas en las medidas del fémur. Estas discrepancias enfatizan la necesidad de datos específicos de la población para las intervenciones ortopédicas y plantean dudas sobre la idoneidad de las prótesis importadas. Las diferencias en la longitud del fémur, la longitud del cuello y la NSA entre lados sugieren posibles desafíos al utilizar implantes diseñados para un lado en el otro. Este estudio subraya la necesidad de datos específicos de la población en ortopedia, ya que las mediciones del fémur difieren incluso entre las poblaciones asiáticas. Es esencial realizar más investigaciones y análisis estadísticos para adaptar las soluciones ortopédicas a poblaciones individuales. Los hallazgos también sugieren una posible necesidad de prótesis fabricadas localmente para adaptarse mejor a la población de Sri Lanka.

Open Fracture of the Femoral Neck in an Adult: Case Report and Surgical Solution / Fratura exposta do colo do fêmur em adulto: Relato de caso e solução cirúrgica

Abstract Intracapsular proximal femoral fracture is a frequent injury in elderly patients, often associated with low-energy trauma and reduced bone mass. In young patient, it is uncommon, usually caused by high-energy trauma and accompanied by damage to the adjacent soft tissues. However, reports of open intracapsular proximal femoral fracture due to indirect trauma are rare in the orthopedic literature. In the present article, we describe a case of this injury in a 35-year-old man involved in a car accident. The proximal femur was exposed at the gluteal region due to a mechanism similar to dislocation of the posterior hip. We describe the initial treatment and subsequent management until achieving a definitive solution using total hip arthroplasty and muscle transfer to reconstruct the abductor mechanism of the hip. At 10 months of follow-up, the patient presented good functional outcome, with gradual recovery of the abductive strength and a Harris Hip Score of 91 points. In addition, a radiographic study showed that the cemented total prosthesis was well-positioned. This therapeutic strategy (total hip arthroplasty with muscle transfer to reconstruct the abductor musculature) was successful to treat an intracapsular proximal femoral fracture with bone exposure.

Resumo A fratura intracapsular do fêmur proximal é uma lesão frequente no paciente idoso, e em geral está associada a trauma de baixa energia e redução da massa óssea. No jovem, esta lesão é pouco frequente, decorre de trauma de alta energia, e resulta em dano das partes moles adjacentes. Contudo, o relato de fratura intracapsular do fêmur proximal com exposição óssea por trauma indireto é raro na literatura ortopédica. Neste relato, esta lesão foi diagnosticada em um homem de 35 anos, vítima de acidente automobilístico. Mediante um mecanismo semelhante ao da luxação posterior do quadril, o segmento proximal do fêmur determinou exposição óssea através da região glútea. Foram descritos o tratamento inicial e os tratamentos subsequentes até a solução definitiva por artroplastia total do quadril associada a transposição muscular para reconstrução do mecanismo abdutor do quadril. Após 10 meses de seguimento, o paciente apresentava boa recuperação funcional, com retorno gradual da força abdutora, Harris Hip Score de 91 pontos, com estudo radiográfico revelando prótese total cimentada bem posicionada. A estratégia terapêutica utilizada neste paciente (artroplastia total do quadril com transferência muscular para a reconstrução da musculatura abdutora) foi uma solução eficiente para tratar a fratura intracapsular do fêmur proximal com exposição óssea.

EVALUATION OF FUNCTIONAL OUTCOME OF DUAL MOBILITY CUPS IN TOTAL HIP ARTHROPLASTY IN ARTHRITIS HIP AND FEMORAL NECK FRACTURES

Background- Osteoarthritis hip and femoral neck fractures in old age can be treated by total hip arthroplasty using dual mobility cup designs. The posterior approach (Kocher-Langenbeck) was used earlier however, lateral (Harding) and anterior approach (Smith-Petersen) are more often used. Evaluation of functional outcomes of total h Aim- ip arthroplasty using dual mobility cups in patients with osteoarthritis hip and femur neck fractures in terms of time of surgery, re-operation rate and mortality in 1 year, length of hospital stay and post-operative complications, using Harris Hip Score (HHS). Study Design- Hospital based prospective cohort study. Material and Methods- 40 cases were include in the study of which, 20 cases are of osteoarthritis hip and 20 cases are of femur neck fracture managed by dual mobility total hip arthroplasty. Clinical and functional outcome was graded using HHS. Anatomical reduction was assessed at 8 weeks, 3months, 6 months and 9 months. The mean HHS at 8 weeks, 3months, 6 months and 9 mont Result- hs in osteoarthritis hip was 56.40, 69.80, 80.90 and 91.50 and in femur neck fractures was 51.10, 63.50, 74.60 and 84.50, achieved. Better result was found in osteoarthritis hip. Conclusion- We concluded that using dual mobility total hip arthroplasty in osteoarthritis hip is far better than femur neck fractures due to better clinical and functional outcome, better anatomical reduction.

Perioperative mortality and morbidity of hip fractures among COVID-19 infected and non-infected patients: A systematic review and meta-analysis / 中华创伤杂志(英文版)

PURPOSE@#Hip fractures among elderly patients are surgical emergencies. During COVID-19 pandemic time, many such patients could not be operated at early time because of the limitation of the medical resources, the risk of infection and redirection of medical attention to a severe infective health problem.@*METHODS@#A search of electronic databases (PubMed, Medline, CINAHL, EMBASE and the Cochrane Central Register of Controlled Trials) with the keywords "COVID", "COVID-19″, "SARS-COV-2", "Corona", "pandemic", "hip fracture", "trochanteric fracture" and "neck femur fracture" revealed 64 studies evaluating treatment of hip fracture in elderly patients during COVID-19 pandemic time. The 30-day mortality rate, inpatient mortality rate, critical care/special care need, readmission rate and complications rate in both groups were evaluated. Data were analyzed using Review Manager (RevMan) V.5.3.@*RESULTS@#After screening, 7 studies were identified that described the mortality and morbidity in hip fractures in both COVID-19 infected (COVID-19 +) and non-infected (COVID-19 -) patients. There were significantly increased risks of 30-day mortality (32.23% COVID-19 + death vs. 8.85% COVID-19 - death) and inpatient mortality (29.33% vs. 2.62%) among COVID-19 + patients with odds ratio (OR) of 4.84 (95% CI: 3.13 - 7.47, p < 0.001) and 15.12 (95% CI: 6.12 - 37.37, p < 0.001), respectively. The COVID-19 + patients needed more critical care admission (OR = 5.08, 95% CI: 1.49 - 17.30, p < 0.009) and they remain admitted for a longer time in hospital (mean difference = 3.6, 95% CI: 1.74 - 5.45, p < 0.001); but there was no difference in readmission rate between these 2 groups. The risks of overall complications (OR = 17.22), development of pneumonia (OR = 22.25), and acute respiratory distress syndrome/acute respiratory failure (OR = 32.96) were significantly high among COVID-19 + patients compared to COVID-19 - patients.@*CONCLUSIONS@#There are increased risks of the 30-day mortality, inpatient mortality and critical care admission among hip fracture patients who are COVID-19 +. The chances of developing pneumonia and acute respiratory failure are more in COVID-19 + patients than in COVID-19 ‒ patients.

CT study on safety target area of femoral neck model screw channel and establishment of a stable spatial coordinate system / 中华骨科杂志

Objective:To study the image features in direction and quantity on CT scans of the axial safety target area of Sawbone femoral neck screw tunnels and possibility of establishing a stable spatial cartesian coordinate system.Methods:After three-dimensional reconstruction of CT data of 40 Sawbone femoral necks, the real axial CT images (perpendicular to the surgical central axis) of each femoral neck were superimposed respectively to get the intersection, called axial safe target area(ASTA). With the anterior cortex of femoral neck basilar seen as a landmark, the spatial rectangular coordinate system ( x, y, z) was established to measure superior-inferior diameters (D-SI), anterior-posterior diameters (D-AP) and the oblique angles. Each intersection was overlapped to the original axial CT images to find coronal position of ASTA boundaries. In addition, coronal CT union (equivalent to anteroposterior X-ray) and sagittal CT union (equivalent to lateral X-ray) were obtained by images in situ superposition method, from which the coronal positions of the isthmus of the perspective boundary (D-SI and D-AP) were determined. The coincidence of the boundary positions of ASTA and those of the perspective isthmus was compared. Pearson correlation coefficients were calculated for the left and right sides respectively to analyze the correlation between D-SI and D-AP. Results:Every ASTA presented an oblique rounded quadrilateral, whose front base was flat and coincided with anterior cortex of femoral neck basilar (FNB). In this coordinate system, D-SI were 35.13±0.51 mm on the left and 30.98±0.82 mm on the right, while D-AP were 26.66±0.39 mm on the left and 27.53±0.72 mm on the right. There was no significant correlation between D-SI and D-AP (left: R=0.43, P=0.060, right: R=0.32, P=0.176, respectively). All the isthmus of X-ray boundary fell at the corresponding ASTA boundary. The oblique angles ranged from 8° to 29°, and all parameters were within the range of normal femoral neck (the anterior cortex of the femoral neck basilar is flat, with a D-SI range of 26-38 mm, a D-AP range of 17-29 mm, and an oblique angle range of 5°-53°). Conclusion:The intersection method can be used to conveniently acquire directional-quantitative-stable individualized ASTA of Sawbone femoral neck. Thus, a stable spatial cartesian coordinate system can be established based on the anterior cortex of femoral neck basilar.

Anatomical features of the proximal femur in the Turkish population / Características anatómicas del fémur proximal en la población turca

SUMMARY: Different populations have different genetic traits, and this causes various anatomical features to emerge. Orthopedic implants used in Turkey are generally of Western origin, and these implants are designed based on the anatomical features of Western populations. This study aimed to evaluate the compatibility of existing implants for the Turkish population by revealing the anatomical features of the proximal femurs of individuals from the Turkish population while also constituting a helpful source of data on newly developed implants. A total of 1920 proximal femurs of 960 patients were evaluated via images obtained by Computer Tomography. Twenty patients (10 females and 10 males) for each age within the age range of 18-65 years were included. Femoral head diameter, femoral neck width, femoral neck length, medullary canal width, and collodiaphyseal angle were measured. The right and left femoral head diameter was 46.46±3.84 mm, 46.50 ±3.85 mm respectively. The right and left femoral neck width was 30.63±3.4 mm, 30.85±3.29 mm respectively. The neck length was 94.62±8.33 mm for the right proximal femur, it was 94.75±8.19 mm for the left. The width of the medullary canal was 15.46±2.25 mm for the right proximal femur and 15.53±2.20 mm for the left. The right and left hips, the collodiaphyseal angles were 133.06±2.39° and 133.13±2.36°. Anatomical features of the proximal femur vary according to age, sex, and race. This study may be used as an important resource for the evaluation of patients' compatibility with existing implants and for the design of new implants.

Diferentes poblaciones tienen diferentes rasgos genéticos, y esto hace que surjan varias características anatómicas. Los implantes ortopédicos utilizados en Turquía son generalmente de origen occidental y estos implantes están diseñados en función de las características anatómicas de estas poblaciones. Este estudio tuvo como objetivo evaluar la compatibilidad de los implantes existentes para la población turca al revelar las características anatómicas de las epífisis proximales de fémures de individuos de la población turca y, al mismo tiempo, constituir una fuente útil de datos sobre implantes recientemente desarrollados. Se evaluaron un total de 1920 fémures proximales de 960 pacientes mediante imágenes obtenidas por tomografía computarizada. Se incluyeron veinte pacientes (10 mujeres y 10 hombres) para cada edad dentro del rango de edad de 18 a 65 años. Se midió el diámetro de la cabeza femoral, el ancho del cuello femoral, la longitud del cuello femoral, el ancho del canal medular y el ángulo colodiafisario. El diámetro de la cabeza femoral derecha e izquierda fue de 46,46 ± 3,84 mm, 46,50 ± 3,85 mm, respectivamente. La anchura del cuello femoral derecho e izquierdo fue de 30,63±3,4 mm, 30,85±3,29 mm, respectivamente. La longitud del cuello fue de 94,62±8,33 mm para el fémur derecho, fue de 94,75±8,19 mm, para el izquierdo. El ancho del canal medular fue de 15,46±2,25 mm para el fémur derecho y de 15,53±2,20 mm para el izquierdo. Las caderas derecha e izquierda, los ángulos colodiafisarios fueron 133,06±2,39° y 133,13±2,36°. Las características anatómicas de la epífisis proximal del fémur varían según la edad, el sexo y la raza. Este estudio puede utilizarse como un recurso importante para la evaluación de la compatibilidad de los pacientes con los implantes existentes y para el diseño de nuevos implantes.

Long-Term Outcome of Valgus Osteotomy and Fixation with Double Angled Dynamic Hip Screw for Nonunion Fracture of the Neck of the Femur in Young Adults / Desfecho a longo prazo da osteotomia valgizante e fixação com parafuso dinâmico de quadril de ângulo duplo de fratura não consolidada do colo femoral em adultos jovens

Abstract Objective To evaluate the long-term results of valgus intertrochanteric osteotomy fixed with double angled dynamic hip screw for nonunion fracture of the neck of the femur in young adults. This implant allows more freedom of fixation in the sagittal plane. Very few studies have evaluated the long-term outcome for treatment of nonunion in fractures of the neck of the femur. Methods This is a prospective interventional study that included 20 patients with nonunion of the fracture of the neck of the femur aged < 60 years old without avascular necrosis of the head and significant resorption of the neck of the femur. A lateral closing wedge osteotomy was performed just above the lesser trochanter after inserting the Richard screw across the nonunion site, and it was fixed with a double-angle 120° barrel plate. The outcome was evaluated using union rate and the Harris Hip Score for functional outcome. Results The average postoperative decrease in the Pauwels angle was of 28.9°. A total of 80% of the cases progressed to union within a mean duration of 7.53 months. The mean Harris Hip Score at the final follow-up was 86.45. Conclusion Valgus intertrochanteric osteotomy and fixation with a double angled dynamic hip screw is a reliable and effective method for preservation of head and promoting union in an ununited fractured neck of the femur in young patients.

Resumo Objetivo Avaliar os resultados a longo prazo da osteotomia intertrocantérica valgizante, fixada com parafuso dinâmico de quadril (DHS, na sigla em inglês) de ângulo duplo, em fraturas não consolidadas do colo femoral em adultos jovens. Este implante permite uma liberdade maior de fixação no plano sagital. Muito poucos estudos avaliaram o desfecho do tratamento a longo prazo da fratura não consolidada do colo femoral. Métodos Trata-se de um estudo prospectivo de intervenção que incluiu 20 pacientes com fratura não consolidada do colo femoral com idade < 60 anos, sem necrose avascular da cabeça femoral e significativa reabsorção do colo femoral. Foi realizada uma osteotomia em cunha de fechamento lateral logo acima do trocânter menor após a inserção do parafuso tipo Richard no sítio do retardo da consolidação óssea, sendo fixada com uma placa cilíndrica de ângulo duplo de 120°. O resultado foi avaliado com o uso da taxa de consolidação e da escala Harris Hip Score quanto ao desfecho funcional. Resultados Foi obtida uma redução pós-operatória média de 28,9° do ângulo de Pauwels. Os casos que evoluíram para a consolidação alcançaram 80%, em um período médio de 7,53 meses. A média da escala Harris Hip Score foi de 86,45 no acompanhamento final. Conclusão A osteotomia intertrocantérica valgizante e a fixação com DHS de ângulo duplo é um método confiável e eficaz para a preservação da cabeça do fêmur, promovendo a consolidação de uma fratura não consolidada do colo femoral em pacientes jovens.

Evaluation of the Intraobserver and Interobserver Agreements of the New AO/OTA Classification for Fractures of the Trochanteric Region and the Femoral Neck / Avaliação das concordâncias intra e interobservadores da nova classificação AO/OTA para fraturas da região trocantérica e do colo do fêmur

Abstract Objective In the present study, we investigated the intra and interobserver agreement of the new Arbeitsgemeinschaft für Osteosynthesefragen/Orthopaedic Trauma Association (AO/OTA) classification for fractures of the proximal extremity of the femur. Methods One hundred hip radiographs were selected from patients who suffered fractures of the trochanteric region or femoral neck. Four orthopedists, fellowship trained hip surgeons, and four orthopedic residents evaluated and classified fractures according to the new AO/OTA system on two separate occasions. The kappa (k) coefficient was used to evaluate intra and interobserver agreement in the different steps of the classification, namely: type, group, subgroup, and qualifier. Results Hip surgery experts obtained almost perfect intraobserver agreement of type, substantial for group and, only moderate, for subgroup and qualifiers. The residents had lower performance, with substantial agreement for type, moderate for group, and reasonable for subgroup and qualifier. In the specialists' interobserver evaluation, there was also a gradual decrease in the agreement between type (almost perfect) and group (moderate), which was even lower for subgroup and qualifiers. Residents had a substantial interobserver agreement for type, moderate for group, and reasonable in the other branches. Conclusion The new AO/OTA classification for fractures of the trochanteric region and femoral neck showed intra and interobserver agreements considered appropriate for type and group, with a drop in the subsequent branches, that is, for subgroup and qualifier. Still, in relation to the old AO/OTA classification, there was an improvement in the agreements for subgroup.

Resumo Objetivo Neste estudo, investigamos a concordância intra e interobservador da nova classificação Arbeitsgemeinschaft für Osteosynthesefragen/Orthopaedic Trauma Association (AO/OTA) para fraturas da extremidade proximal do fêmur. Métodos Foram selecionadas 100 radiografias do quadril de pacientes que sofreram fraturas da região trocantérica ou do colo do fêmur. Quatro ortopedistas cirurgiões de quadril e quatro residentes de ortopedia e traumatologia avaliaram e classificaram as fraturas segundo o novo sistema AO/OTA em duas ocasiões distintas. O coeficiente de kappa (k) foi utilizado para avaliar a concordância intra e interobservadores nos diferentes passos da classificação, a saber: tipo, grupo, subgrupo e qualificador. Resultados Especialistas em cirurgia do quadril obtiveram concordância intraobservador quase perfeita de tipo, substancial para grupo e, apenas moderada para subgrupo e qualificadores. Os residentes tiveram desempenho inferior, com concordância substancial para o tipo, moderada para o grupo, e razoável para o subgrupo e qualificador. Na avaliação interobservadores dos especialistas, também se observou queda gradual da concordância entre tipo (quase perfeita) e grupo (moderada), que se mostrou ainda menor parasubgrupo e qualificadores.Residentestiveramumaconcordânciainterobservadoressubstancialparatipo, moderada para grupo e razoável nas demais ramificações. Conclusão A Nova Classificação AO/OTA para fraturas da região trocantérica e do colo do fêmur mostrou concordâncias intra e interobservadores consideradas adequadas para tipo e grupo com queda nas ramificações subsequentes ou seja para subgrupo e qualificador. Ainda assim em relação à classificação AO/OTA antiga houve melhora nas concordâncias para subgrupo.

Comparison of Anterior and Lateral Approach in Hip Hemiarthroplasty for Femur Neck Fractures in the Elderly: Clinical and Radiographic Outcomes

@#Introduction: Many surgical approaches have been described for hip hemiarthroplasty (HHA) treating femur neck fractures (FNFs). Direct lateral approach (DLA) is one of the most used. Today, the direct anterior approach (DAA) has become very attractive, but it seems to involve more intra-operative fractures. Our main endpoint was to demonstrate that the DAA may be a valid alternative comparing to the DLA. Materials and methods: Patients affected by FNFs and treated with HHA between the years 2016 and 2020 were studied. We divided the treatment of the fractures according to the surgical approach. The analysis was focused on perioperative complications and radiological outcomes. Results: There were a total of 166 patients. The DLA group included patients with an average age of 83.5 years and the DAA group of 83 years. We found similar surgical times (DLA 67 min vs DAA 61 min; p = 0,55), number of transfusions (DLA 3/person vs DAA 4/person; p = 0,91), perioperative complications (fractures: DLA 0 vs DAA 0 – dislocations: DLA 2,50% vs DAA 0) and functional outcomes (HHS: DLA 83 points vs DAA 87 points; p = 0,71). There were no statistical differences comparing diaphyseal filling (Canal Fill Index at the proximal third: DLA 0,79 vs DAA 0,78; p= 0,24), bone loss (Paprosky I: DLA 96,25% vs DAA 91,86%; p = 0,47) and prevalence of heterotopic ossification (Broker low degree: DLA 93,75% vs 95, 34%; p = 0,87). Conclusion: Analysing perioperative complications and studying post-operative radiographic evolution, our results suggest that the DAA is a valid alternative to the DLA in HHA treating FNFs.

Relationship of anteversion of the femoral neck with patellofemoral pain syndrome in young women not practicing regular physical activity / Relação entre a anteversão de colo do fêmur e a síndrome da dor patelofemoral em mulheres jovens não praticantes de atividade física regular

ABSTRACT BACKGROUND AND OBJECTIVES: Patellofemoral pain syndrome is an anterior knee pain (or retropatellar), associated to knee joint stress. The risk factors include musculoskeletal disorders that affect the distribution of forces acting on the knee joint, as in the femoral anteversion. The objective of this study was to verify the relationship between the femoral anteversion angle and the patellofemoral pain syndrome in young women who do not practice regular physical activity. METHODS: This is a cross-sectional, case-control study. The sample includes 100 women (G1, n=50 - anterior knee pain; G2, n=50 - control group). The instruments applied were the Anterior Knee Pain Score, numerical pain scale, and Craig's test. The groups were compared using the Student's t-test, p<0.05 for significant results (GraphPad Prism 8). RESULTS: The mean age was 21.5±3.45 and 20.9±2.85 years old for G1 and G2, respectively. Mean pain intensity was 4.6±1.97 for G1, with no pain recorded in G2 (p=0.0001). The mean anteversion angle of the femoral neck was 16.2±4.85 degrees in G1 and 15.6±4.87 degrees in G2 (p= 0.566). The average score obtained with the Anterior Knee Pain Score was 81.4±10.46 and 94.8±5.41 points for groups 1 and 2, respectively (p=0.0001). CONCLUSION: No relationship was found between angulation of the femoral neck and the presence of anterior knee pain, however, a greater functional loss in the group with pain was observed.

RESUMO JUSTIFICATIVA E OBJETIVOS: A síndrome da dor patelofemoral se manifesta com dor anterior no joelho ou retropatelar, relacionada ao aumento do "stress" articular. Os fatores de risco incluem disfunções musculoesqueléticas que afetem a distribuição de forças na articulação do joelho, como ocorre na anteversão femoral. O objetivo deste estudo foi verificar a relação do ângulo de anteversão femoral com a dor anterior no joelho de mulheres jovens não praticantes de atividade física regular. MÉTODOS: Estudo transversal, caso-controle. A amostra foi composta por 100 mulheres divididas nos grupos dor anterior no joelho (G1) e controle (G2) cada um com 50 indivíduos. Os instrumentos aplicados foram: o Anterior Knee Pain Score, a escala numérica da dor, e teste de Craig. Os grupos foram comparados entre si pelo teste t de Student, adotando-se p<0,05 para resultados significativos (GraphPad Prism 8). RESULTADOS: A média de idade foi de 21,5±3,45 e 20,9±2,85 anos para G1 e G2, respectivamente. A intensidade média da dor foi 4,6±1,97 para o G1, não havendo registro de dor no G2 (p=0,0001). A angulação média de anteversão do colo femoral foi de 16,2±4,85 graus no G1 e 15,6±4,87 graus no G2 (p=0,566). Por fim, o escore médio obtido com o Anterior Knee Pain Score foi de 81,4±10,46 e 94,8±5,41 pontos para os grupos 1 e 2, respectivamente (p=0,0001). CONCLUSÃO: Não foi encontrada relação entre angulação do colo femoral com a presença de dor anterior do joelho, no entanto, observou-se no grupo com dor havia maior perda funcional.

Osteoporosis and hearing loss: findings from the Korea National Health and Nutrition Examination Survey 2009-2011 / Osteoporose e perda auditiva: resultados da Pesquisa Nacional do Exame de Saúde e Nutrição da Coreia de 2009 a 2011

Abstract Introduction: Age-related hearing impairment is the most common sensory dysfunction in older adults. In osteoporosis, the mass of the ossicles will be decreased, affecting the bone density of the cochlea, and interfering with the sound transmission to the cochlea. Age related hearing loss might be closely related to osteoporosis. Objective: To determine the relationship between age-related hearing impairment and osteoporosis by investigating the relationship between hearing loss and cortical bone density evaluated from femur neck bone mineral density. Methods: We used data from the Korea National Health and Nutrition Examination Survey to examine the associations between osteoporosis and age-related hearing impairment from 2009 to 2011. Total number of participants was 4861 including 2273 men and 2588 women aged 50 years or older. Osteoporosis was defined as a bone mineral density 2.5 standard deviations below according to the World Health Organization diagnostic classification. Age-related hearing impairment was defined as the pure-tone averages of test frequencies 0.5, 1, 2, and 4 kHz at a threshold of 40 dB or higher on the more impaired hearing side. Results: Total femur T-score (p < 0.001), lumbar-spine T-score (p < 0.001) and, femur neck T-score (p < 0.001) were significantly lower in the osteoporosis group compared to the normal group. Thresholds of pure-tone averages were significantly different in normal compared to osteopenia, and osteoporosis groups. In addition, there were significantly higher pure-tone averages thresholds in the osteoporosis group compared to other groups (p < 0.001). After adjusting for all covariates, the odds ratio for hearing loss was significantly increased by 1.7 fold with reduced femur neck bone mineral density (p < 0.01). However, lumbar spine bone mineral density was not statistically associated with hearing loss (p = 0.22). Conclusion: Our results suggest that osteoporosis is significantly associated with a risk of hearing loss. In addition, femur neck bone mineral density was significantly correlated with hearing loss, but lumbar spine bone mineral density was not.

Resumo Introdução: A perda auditiva associada ao envelhecimento é a disfunção sensorial mais comum em idosos. Na osteoporose, a massa dos ossículos diminui e afeta a densidade óssea da cóclea, o que irá interferir na transmissão do som para a mesma. A perda auditiva associada à idade pode estar intimamente relacionada à osteoporose. Objetivo: Determinar a relação entre deficiência auditiva relacionada à idade e osteoporose, investigar a relação entre perda auditiva e densidade óssea cortical avaliada a partir da densidade mineral óssea do colo do fêmur. Método: Utilizamos dados da Korea National Health and Nutrition Examination Survey para examinar as associações entre osteoporose e perda auditiva associada ao envelhecimento de 2009 a 2011. O número total de participantes foi de 4.861, incluiu 2.273 homens e 2.588 mulheres com 50 anos ou mais. A osteoporose foi definida como densidade mineral óssea com 2,5 desvios-padrão abaixo da média, de acordo com a classificação diagnóstica da Organização Mundial da Saúde. A perda auditiva associada ao envelhecimento foi definida como as médias de tom puro das frequências de teste de 0,5, 1, 2 e 4 kHz a um limiar de 40 dB ou superior no lado da audição mais afetado. Resultados: O T-score total do fêmur (p < 0,001), o T-score da coluna lombar (p < 0,001) e o T-score do colo do fêmur (p < 0,001) foram significantemente menores no grupo com osteoporose em comparação ao grupo normal. Os limiares de médias de tom puro foram significantemente diferentes nos grupos normais em comparação com aqueles com osteopenia e osteoporose. Além disso, houve limiares significantemente maiores de médias de tom puro no grupo com osteoporose em comparação com os outros grupos (p < 0,001). Após o ajuste para todas as covariáveis, a odds ratio da perda auditiva mostrou estar significantemente aumentada em 1,7 vez com densidade mineral óssea reduzida no colo do fêmur (p < 0,01). No entanto, a densidade mineral óssea da coluna L não se associou estatisticamente à perda auditiva (p = 0,22). Conclusão: Nossos resultados sugerem que a osteoporose está significantemente associada ao risco de perda auditiva. Além disso, a densidade mineral óssea da coluna lombar não se correlacionou com a perda auditiva, apenas a densidade mineral óssea do colo do fêmur foi significantemente correlacionada.

Clinical application of CT measurement in primary total hip arthroplasty of DDH patients / 中国医师杂志

Objective@#To investigate the clinical effect of preoperative computed tomography (CT) measurement of acetabulum femoral neck combined anteversion in primary total hip arthroplasty (THA).@*Methods@#From March 2016 to may 2018, 48 patients (90 hips) with developmental dysplasia of the hip (DDH) who were treated with THA in the orthopaedic department of Jiangmen Central Hospital were measured by X-ray and spiral CT three-dimensional reconstruction technology before operation, and the best combined anteversion angle of acetabulum was determined before implementing THA, which was CT group; the remaining 42 patients were not measured by CT before operation, which was X-ray group. The difference of acetabulum cup anteversion angle, acetabulum femoral neck combined anteversion angle and preoperation angle were evaluated by three-dimensional computed tomography (3D-CT) in CT group.@*Results@#There was no significant difference in operative time, intraoperative blood loss, time of getting out of bed and length of lower limbs between the two groups (P>0.05). In CT group, the acetabulum cup anteversion and acetabulum femoral neck anteversion were close to the pre-operative angle at 2 and 3 months postoperatively (P>0.05). The Harris hip score of CT group was significantly higher than that of X-ray group at 2 and 3 months after operation, and the incidence of deep vein thrombosis was 6.25%, significantly lower than that of X-ray group (21.43%) (P<0.05). The incidence of dislocation, infection and periprosthetic fracture was slightly lower than that of X-ray group, but the difference was not statistically significant (P>0.05).@*Conclusions@#For DDH patients who received THA for the first time, preoperative CT measurement of acetabulum femoral neck combined with anteversion is conducive to the formulation of the best combined anteversion adjustment scheme, which can obtain the maximum initial stability, improve the surgical effect and reduce the occurrence of dislocation of prosthesis.

Clinical application of CT measurement in primary total hip arthroplasty of DDH patients / 中国医师杂志

Objective To investigate the clinical effect of preoperative computed tomography (CT) measurement of acetabulum femoral neck combined anteversion in primary total hip arthroplasty (THA).Methods From March 2016 to may 2018,48 patients (90 hips) with developmental dysplasia of the hip (DDH) who were treated with THA in the orthopaedic department of Jiangmen Central Hospital were measured by X-ray and spiral CT three-dimensional reconstruction technology before operation,and the best combined anteversion angle of acetabulum was determined before implementing THA,which was CT group;the remaining 42 patients were not measured by CT before operation,which was X-ray group.The difference of acetabulum cup anteversion angle,acetabulum femoral neck combined anteversion angle and preoperation angle were evaluated by three-dimensional computed tomography (3D-CT) in CT group.Results There was no significant difference in operative time,intraoperative blood loss,time of getting out of bed and length of lower limbs between the two groups (P ＞ 0.05).In CT group,the acetabulum cup anteversion and acetabulum femoral neck anteversion were close to the pre-operative angle at 2 and 3 months postoperatively (P ＞ 0.05).The Harris hip score of CT group was significantly higher than that of X-ray group at 2 and 3 months after operation,and the incidence of deep vein thrombosis was 6.25％,significantly lower than that of X-ray group (21.43％) (P ＜0.05).The incidence of dislocation,infection and periprosthetic fracture was slightly lower than that of X-ray group,but the difference was not statistically significant (P ＞ 0.05).Conclusions For DDH patients who received THA for the first time,preoperative CT measurement of acetabulum femoral neck combined with anteversion is conducive to the formulation of the best combined anteversion adjustment scheme,which can obtain the maximum initial stability,improve the surgical effect and reduce the occurrence of dislocation of prosthesis.

Normal Korean Femoral Neck Anteversion, Acetabular Anteversion and Combined Anteversion Measured with Computed Tomography / 대한정형외과학회잡지

PURPOSE: The authors measured the anteversion of the femoral neck and acetabulum and the sum of the two values in normal Korean people by computed tomography. The authors examined the normal range of the values to analyze the difference in sex and sides as well as the relationship between the femoral neck and acetabular anteversion. MATERIALS AND METHODS: The authors measured the anteversion of the femoral neck and acetabulum in 118 normal Korean adult males and 114 females aged between 21 and 49 on both the right and left sides by computed tomography and calculated the sum of anteversion. The authors analyzed the mean and standard deviation, and investigated the sex differences and side differences, as well as the relationship between the acetabular anteversion and femoral neck anteversion statistically. RESULTS: The anteversion of the acetabulum in males was 15.3°±6.1° on the right side and 15.3°±6.6° on the left side. The anteversion of the femoral neck in males was 5.3°±7.6° on the right side and 1.5°±9.2° on the left side according to the Hernandez et al. method. The anteversion of acetabulum in females was 16.8°±5.4° on the right side and 16.3°±5.8° on the left side. The anteversion of femoral neck in females was 10.3°±8.2° on the right side and 7.9°±8.2° on the left side according to Hernandez et al. method. No difference in acetabular anteversion, and a significant difference in the femoral neck anteversion on both the right and left sides were observed between males and females. No difference of acetabular anteversion was observed between the right and left sides, but a significant difference in femoral neck anteversion was noted between the right and left sides measured by either the Hernandez et al. method or Weiner et al. method. The Pearson coefficient revealed no correlation between the femoral neck anteversion and acetabular anteversion. CONCLUSION: No difference in the acetabular anteversion was observed, but there was a significant difference in femoral neck anteversion between males and females. A significant difference in femoral neck anteversion was observed between the right and left sides. No correlation was noted between the anteversion of the femoral neck and acetabulum.

Prediction of early postoperative desaturation in extreme older patients after spinal anesthesia for femur fracture surgery: a retrospective analysis / 대한마취과학회지

BACKGROUND: Postoperative desaturation in older individuals is rarely addressed in the literature. The objective of this retrospective study was to investigate whether a preoperative spirometric test and arterial blood gas analysis (ABGA) might predict postoperative desaturation after spinal anesthesia in extreme older patients.METHODS: The medical records of 399 patients (age ≥ 80 yrs) who were administered spinal anesthesia for a femur neck fracture surgery were retrospectively reviewed. Early postoperative desaturation was defined as a reduction of oxygen saturation (SpO₂) below 90% within 3 days of surgery, despite O₂ supply via a nasal prong. Binary logistic regression analysis was used to identify predictors of early postoperative desaturation.RESULTS: The incidence of postoperative desaturation was 12.5%. Major morbidity rate was significantly higher in the desaturation group (n = 50) than that in the non-desaturation group (n = 349) (14% vs. 3.2%, P = 0.001) with more frequent postoperative stays in the intensive care unit (22% vs. 12%, P = 0.004). In a binary logistic regression analysis, preoperative ratio of arterial oxygen partial pressure to fractional inspired oxygen (PaO₂/FiO₂ ratio) (OR, 0.972; 95% CI 0.952–0.993; P = 0.010) and history of cardiovascular disease (OR, 2.127; 95% CI 1.004–4.507; P = 0.049) predicted postoperative desaturation.CONCLUSIONS: Preoperative PaO₂/FiO₂ ratio, but not preoperative spirometry, was predictive of the postoperative desaturation in older patients after being administered spinal anesthesia for femur fracture surgery. Based on our results, preoperative ABGA may be helpful in predicting early postoperative desaturation in these patients.

A Study Of Femoral Neck Anteversion Angle In Central Indian Population: A Guide For Orthopaedic Surgeries Including Hip Arthroplasty

Background: Femoral neck anteversion angle is the angle which measures the anterior rotation of the neck of thefemur around the shaft. Its variation in the various population groups is attributed to various factors such asheredity, diet, climatic factors and lifestyle. This angle is clinically significant for orthopedicians while doinghip arthroplasties and osteotomies where it is pertinent to restore the anatomy of proximal femur for stability ofthe hip joint.Context and purpose of the study: There is no baseline data of Femoral Neck Anteversion angle for Central Indianpopulation. The present study was aimed to fill this lacuna and to give the normal values of femoral neckanteversion angle for above specified population.Materials and methods: 152 dried femora were procured from department of anatomy consisting of 77 femora ofright side and 75 femora of left side. Anteversion angle is recorded using goniometer. Means were calculated andstatistically correlated for laterality using independent student‘t’ test. p value was thus obtained.Results: Mean anteversion angle of right side was found to be 19.03º ± 12.11º and that of the left side came outto be 18.62º ± 10.8º. Among 152 femora taken, 7 retroverted and 7 neutral verted femora were also found in thestudy.Conclusion: So much variation in the angle of anteversion along with the presence of retroversion (4.6%) andneutral version (4.6%) is a challenge for both implant designer companies as well as orthopedicians. Thus,present study acts as a guide for normal values and range of this clinically significant angle.

Predictors of Intraoperative Fractures during Hemiarthroplasty for the Treatment of Fragility Hip Fractures

BACKGROUND: The aim of our study was to determine the rate and preoperative predictors of intraoperative fracture (IOF) during hip hemiarthroplasty (HA) in patients who have sustained a fragility hip fracture injury. METHODS: We reviewed 626 patients who underwent HA at our institution using the National Hip Fracture Database. Various patient- and surgery-related data including demographic information, cement usage, surgeon grade, time to surgery, and operative duration were collected. The metaphyseal diaphyseal index and modified canal bone ratio were measured on preoperative radiographs. We compared patients with and without IOF with respect to all variables collected. Multivariate regression modeling was used to identify significant preoperative risk factors for IOF. RESULTS: There was a 7% incidence of IOF in our cohort exclusively comprising of Vancouver A fractures. The majority of these complications were treated nonoperatively (52%). There was no statistically significant difference with respect to cement usage, surgeon grade, operative duration, time to surgery, and radiographic parameters collected. Increasing age was found to be the most significant preoperative risk factor for predicting IOF (p = 0.024, overall relative risk = 1.06). CONCLUSIONS: Our identified predictor of increasing age is nonmodifiable and illustrates the importance of meticulous surgical technique in older patients. Furthermore, its independence from fixation methods or prosthesis design as a predictor of IOF may support using an uncemented prosthesis in patients at risk from cement implantation.

Learning Curve of Internal Fixation for Nondisplaced Femoral Neck Fractures: A Cumulative Sum Analysis

BACKGROUND: The purpose of this study was to determine whether there is a learning curve for internal fixation for nondisplaced femoral neck fractures using the cumulative sum (CUSUM) technique. We applied the CUSUM technique in monitoring performance of a single surgeon in internal fixation for nondisplaced femoral neck fractures. METHODS: Fifty consecutive patients who underwent internal fixation for nondisplaced femoral neck fractures were evaluated retrospectively. Loss of fixation within 6 months postoperatively was considered as failure of treatment. Patients were stratified into the early experience group (cases 1 to 25) and the late experience group (cases 26 to 50). The CUSUM method was used to analyze the learning curve. RESULTS: There was no failure of treatment during study period. The operation time became shorter with experience. Using the CUSUM analysis to plot the learning curve, there was no significant learning curve observed for multiple pinning for nondisplaced femoral neck fractures. CONCLUSIONS: The CUSUM analysis revealed there was no obvious learning curve to become proficient at internal fixation for nondisplaced femoral neck fractures, if technical principles were followed during the procedure.

Radiographic anatomy of the proximal femur: femoral neck fracture vs transtrochanteric fracture / Anatomia radiográfica do fêmur proximal: fratura de colo vs. fratura transtrocantérica

ABSTRACT OBJECTIVE: To evaluate the correlation between radiographic parameters of the proximal femur with femoral neck fractures or transtrochanteric fractures. METHODS: Cervicodiaphyseal angle (CDA), femoral neck width (FNW), hip axis length (HAL), and acetabular tear drop distance (ATD) were analyzed in 30 pelvis anteroposterior view X-rays of patients with femoral neck fractures (n = 15) and transtrochanteric fractures (n = 15). The analysis was performed by comparing the results of the X-rays with femoral neck fractures and with transtrochanteric fractures. RESULTS: No statistically significant differences between samples were observed. CONCLUSION: There was no correlation between radiographic parameters evaluated and specific occurrence of femoral neck fractures or transtrochanteric fractures.

RESUMO OBJETIVO: Correlacionar parâmetros radiográficos do fêmur proximal com a ocorrência de fraturas do colo do fêmur ou fraturas transtrocantéricas do fêmur. MÉTODOS: Foram avaliados o ângulo cevicodiafisário (ACD), a largura do colo femoral (LCF), o comprimento do eixo do quadril (CEQ) e a distância entre as lágrimas acetabulares (DL) de radiografias de bacia em incidência anteroposterior de 30 pacientes com fratura de colo de fêmur (n = 15) e fratura transtrocantérica de fêmur (n = 15). A avaliação foi feita com a comparação dos pacientes com fratura de colo de fêmur com os pacientes com fratura transtrocantérica. RESULTADOS: Não foram observadas diferenças estatisticamente significantes entre as amostras obtidas entre os dois grupos comparados. CONCLUSÃO: Não houve correlação entre os parâmetros radiográficos avaliados e ocorrência específica de fraturas de colo de fêmur ou fraturas transtrocantéricas de fêmur.

Osteoma osteoide de cuello femoral: A propósito de un caso / Femoral neck osteoid osteoma: about a case

El osteoma osteoide es un tumor óseo benigno, de pequeño tamaño, sin potencial de crecimiento. Habitualmente se considera a los tumores óseos benignos y malignos como una causa poco frecuente de cojera en apirexia, siendo más frecuentes las patologías inflamatorias inespecíficas como la sinovitis transitoria de cadera, la enfermedad de Perthes y la condropatía conjugal del adolescente. Se presenta el caso clínico de un escolar de 8 años con una cojera dolorosa en apirexia de 4 meses de evolución con sospecha imagenológica de osteoma osteoide de cuello de fémur. Se decide realizar prueba terapéutica con ácido acetilsalicílico. A las 24 horas el niño se encontraba asintomático. Se indicó procedimiento quirúrgico de resección mediante punción bajo tomografía axial computada. El diagnóstico se confirmó mediante anatomía patológica. Se realizó resección completa del tumor con buena evolución. Es importante desde el punto de vista pediátrico realizar un correcto diagnóstico diferencial entre las diferentes causas de cojera dolorosa en apirexia, basándonos en la historia clínica y la imagenología.

Osteoid osteomas are small benign bone tumors which lack growth potential. All bone tumors, whether benign or malign, are considered a rare cause of apyretic limping, being non-specific inflammatory diseases more frequent, such as transient synovitis of the hip, Perthes disease and adolescent conjugal chondropathy. The study presents the clinical case of an 8 year old school boy with a 4 month evolution painful apyretic limp, being there a suspicion of femoral neck osteoid osteoma according to imaging studies. Therapeutic trial of acetylsalicylic acid was performed. Twenty four hours later the boy was asymptomatic. A tomography-guided puncture was indicated. Clinical diagnosis was pathologically confirmed. Subsequently, complete surgical resection of the tumor was performed, the evolution being favorable. From a pediatric perspective it is important to make an accurate differential diagnosis between the different possible causes of painful apyretic limp, based on clinical history and imaging studies.