Concentración preoperatoria de fibrinógeno plasmático como predictor de sangrado en artroplastía total de cadera / Preoperative concentration of plasma fibrinogen as a predictor of bleeding in total hip arthroplasty

Resumen: Introducción: La artroplastía total de cadera tiene popularidad debido al éxito en el tratamiento de coxartrosis; son procedimientos asociados a la pérdida de sangre. Un sangrado importante provoca complicaciones como aumento en días de estancia intrahospitalaria, mayor costo de la enfermedad, exponiendo al paciente a complicaciones asociadas a transfusión sanguínea. El objetivo del estudio es investigar asociación entre concentración de fibrinógeno plasmático preoperatorio con sagrado transquirúrgico y determinar el nivel de corte de fibrinógeno para presentar mayor sangrado transquirúrgico. Material y métodos: Estudio retrospectivo, observacional, analítico, de Junio a Diciembre de 2020, incluyendo 227 pacientes con coxartrosis IV de la escala de Kellgren y Lawrence sometidos a artroplastía total primaria de cadera, derechohabientes, mayores de 18 años, en ausencia de enfermedades hepáticas o hematológicas y antecedente de sangrado quirúrgico importante. Resultados: El valor promedio de hemoglobina preoperatoria fue 14.6 ± 1.3 g/dl, posterior a cirugía (48 horas) 10.5 ± 1.4 g/dl; observando descenso de 4.1 ± 1.2 g/dl (p ≤ 0.0001). Valor promedio del hematocrito prequirúrgico 43% [41-45], posterior al procedimiento 32% [29-35]; se observó descenso de 11% [8-14] (p ≤ 0.0001); 98 pacientes presentaron sangrado transquirúrgico ≥ 300 ml; 129 tuvieron sangrado ≤ 300 ml; 61.2% de pacientes con sangrado mayor de 300 ml mostraron valores de fibrinógeno debajo del punto de corte (388 mg/dl). Conclusión: En pacientes postoperados los niveles preoperatorios de fibrinógeno ≤ 388 mg/dl y edad ≥ 58 años se asociaron al aumento en el riesgo del OR = 0.18 (IC 95% 0.10-0.32) de presentar sangrado transquirúrgico ≥ 300 ml, con descenso de la Hb de 4.1 ± 1.2 g/dl (p = 0.0001) y Hto de 11% [8-14] (p = 0.0001) entre el preoperatorio y el postoperatorio en 48 horas.

Abstract: Introduction: Total hip arthroplasty is popular for its success in treating coxarthrosis, its associated with substantial blood loss. Significant bleeding causes complications such as increase in hospitalization days, higher costs, exposing the patient to complications associated with blood transfusion. The aim of the study is to investigate the association between preoperative plasma fibrinogen concentration and trans-surgical bleeding and determine fibrinogen level cut-off to present greater trans-surgical bleeding. Material and methods: Retrospective, observational, analytical study, from June to December 2020, including 227 patients with Kellgren and Lawrence scale IV coxarthrosis undergoing primary total hip arthroplasty, beneficiaries, older than 18 years, without liver or hematological diseases, and history of significant surgical bleeding. Results: Mean preoperative hemoglobin value was 14.6 ± 1.3 g/dl, after surgery (48 hours) 10.5 ± 1.4 g/dl; decrease of 4.1 ± 1.2 g/dl (p ≤ 0.0001). Mean preoperative hematocrit value 43% [41-45], after the procedure; 32% [29-35]; decrease of 11% [8-14] (p ≤ 0.0001). 98 patients had intraoperative bleeding ≥ 300 ml, 129 had ≤ 300 ml; 61.2% of patients with bleeding greater than 300 ml had fibrinogen values below the cut-off point (388 mg/dl). Conclusion: In postoperative patients, preoperative fibrinogen levels ≤ 388 mg/dl and age ≥ 58 years were associated with an increased risk of OR = 0.18 (95% CI 0.10-0.32) of presenting trans-surgical bleeding ≥ 300 ml, with a decrease in Hb of 4.1 ± 1.2 g/dl (p = 0.0001) and Hto of 11% [8-14] (p = 0.0001) between the pre and postoperative period in 48 hours.

Tratamiento de las fracturas trocántero-subtrocantéricas asociadas a coxartrosis ipsilateral en pacientes mayores de 65 años / Treatment of trochanteric and subtrochanteric fractures associated to ipsilateral coxarthrosis in patients older than 65 years old / Tratamento de fraturas trocantéricas-subtrocantéricas associadas a coxartrose ipsilateral em pacientes com mais de 65 anos

Resumen: Introducción: las fracturas de cadera y la coxartrosis son patologías con alta incidencia en la población anciana. A pesar de esto es una observación clínica frecuente que no se presenten asociadas. No existe consenso de cuál es la mejor opción terapéutica para esta asociación. El objetivo del estudio es actualizar el conocimiento acerca del tratamiento de fracturas trocántero-subtrocantéricas asociadas a coxartrosis ipsilateral en pacientes mayores de 65 años. Materiales y métodos: se realizó una búsqueda sistematizada a través de los buscadores electrónicos PubMed y Ovid. La búsqueda alcanzó un total de 2,499 artículos, de acuerdo a los criterios de inclusión y exclusión se seleccionaron 12 trabajos para realizar nuestra revisión bibliográfica. Resultado: la mayoría de los trabajos analizados son estudios tipo serie de casos retrospectivos. Se realizaron tres subgrupos según tipo de tratamiento para analizar los resultados. Discusión: la asociación entre fracturas de fémur proximal y coxartrosis ipsilateral es poco frecuente. Dentro de este grupo de fracturas las de tipo trocantérico son las que muestran con mayor frecuencia esta asociación. Se plantean dos opciones terapéuticas para resolver esta asociación: tratar la fractura y la patología articular en un mismo acto quirúrgico mediante una artroplastia, o tratar primero la fractura mediante osteosíntesis y en una segunda cirugía la patología articular. El tratamiento mediante artroplastia disminuye el tiempo para la deambulación postoperatoria evitando así complicaciones médicas relacionadas a la enfermedad fracturaria, obteniendo mejores resultados funcionales a corto plazo. La osteosíntesis requiere un menor tiempo quirúrgico y una perdida sanguínea menor, siendo un procedimiento menos demandante técnicamente. La tasa de mortalidad no depende de la opción terapéutica, pero sí de la presencia de 3 o más comorbilidades y edad mayor a 80 años. Resulta importante conocer el tratamiento más adecuado para esta asociación de patologías, ello contribuiría a disminuir los efectos de la enfermedad fracturaria sobre este grupo de pacientes vulnerables. Conclusión: no existe la suficiente evidencia científica para afirmar que una opción terapéutica sea superior a la otra en estos pacientes.

Summary: Introduction: hip fractures and hip joint arthrosis are highly prevalent conditions among older adults. However, according to clinical examination, they are seldom seen together and today there is no general consensus on the best therapy for these associated conditions. The study aims to update existing knowledge on the treatment of trochanteric and subtrochanteric fractures that are associated to ipsilateral coxarthrosis in patients older than 65 years old. Method: we conducted a systematized search on Pubmed and Ovid including 2,499 articles and selected 12 studies to perform our bibliographic review based on inclusion and exclusion criteria. Result: most studies analysed are series of retrospective cases. Cases were classified them into three subgroups to analyse results. Discussion: the association between proximal femur fractures and ipsilateral coxarthrosis is rather unusual. When seen, trochanteric fractures are the most frequent ones. There are two therapeutic options to treat this condition: treating the fracture and the articulation in the same surgery, by means of an arthroplasty, or treating the fracture first with osteosynthesis and operating afterwards to treat the articulation condition. Arthroplasty reduces the time of postoperative ambulation and thus avoids medical complications in connection with the fracture disease, what results in better functional outcome in the short term. Osteosynthesis requires a shorter surgery and implies smaller blood loss, what makes it less technically demanding as a procedure. The mortality rate does not depend on the therapy chosen, but on the presence of three or more comorbilities, or the patient being older than 80 years old. It is important to define what the most appropriate treatment is for these associated conditions, what would contribute to reducing the effects of the fracture on this group of vulnerable patients. Conclusion: there is no sufficient scientific evidence to state whether one therapy is better than the other one in these patients.

Resumo: Introdução: as fraturas de quadril e coxartrose são patologias com alta incidência na população idosa. Apesar disso, é frequente a observação clínica de que não estão associados. Não há consenso sobre qual a melhor opção terapêutica para essa associação. O objetivo deste estudo é atualizar o conhecimento sobre o tratamento das fraturas trocantéricas-subtrocantéricas associadas à coxartrose ipsilateral em pacientes com mais de 65 anos. Materiais e métodos: foi realizada uma busca sistemática nas bases PubMed e Ovid. Foram encontrados 2.499 artigos; após aplicação dos critérios de inclusão e exclusão, foram selecionados 12 artigos para realização de nossa revisão bibliográfica. Resultado: a maioria dos estudos analisados são séries de casos retrospectivos. Para análise dos resultados, foram divididos em três subgrupos de acordo com o tipo de tratamento. Discussão: a associação entre fratura de fêmur proximal e coxartrose ipsilateral é rara. Dentro desse grupo de fraturas, as do tipo trocantérica são as que mais frequentemente apresentam essa associação. Duas opções terapêuticas são propostas para resolver essa associação: tratar a fratura e a patologia articular no mesmo ato cirúrgico por meio de uma artroplastia, ou tratar a fratura primeiro por osteossíntese e em uma segunda cirurgia a patologia articular. O tratamento por artroplastia reduz o tempo de deambulação pós-operatória, evitando complicações médicas relacionadas à doença da fratura, obtendo melhores resultados funcionais em curto prazo. A osteossíntese requer menos tempo cirúrgico e menos perda sanguínea, sendo um procedimento menos exigente tecnicamente. A taxa de mortalidade não depende da opção terapêutica, mas sim da presença de 3 ou mais comorbidades e idade superior a 80 anos. É importante identificar o tratamento mais adequado para esta associação de patologias, o que ajudaria a reduzir os efeitos da patologia da fratura neste grupo de pacientes vulneráveis. Conclusão: não há evidências científicas suficientes para afirmar que uma opção terapêutica seja superior a outra nestes pacientes.

The Effect of Graft Positions on the Stability of Total Hip Arthroplasty with Different Types of Subtrochanteric Shortening / Efeito das posições dos enxertos na estabilidade da artroplastia total de quadril com diferentes tipos de encurtamento subtrocantérico

Abstract Objective The aim of the present study is to investigate the biomechanical stability of different subtrochanteric osteotomy types and graft positions in cases of dysplastic coxarthrosis that require total hip arthroplasty with shortening osteotomy, as well as to find out the most effective osteotomy type and graft position. Method Femur sawbones were used to compare different types of femoral shortening osteotomy (transverse, oblique, and step-cut). Strut grafts, which were prepared at the side of the subtrochanteric shortening osteotomy, were fixed in different positions (anterolateral, mediolateral, and anteroposterior). The fixation of the strut grafts was performed using two steel cables (with 2.0mm of thickness) with the same strength. The failure values of composite femurs were recorded for axial and rotational loadings. Results Biomechanically, there were no statistically significant differences between the types of femoral subtrochanteric shortening osteotomy and the positions of the applied strut graft. Conclusion No superiority was observed between the types of femoral subtrochanteric shortening osteotomy regarding stability. Additionally, against stress, similar results were obtained for different strut graft positions. In conclusion, we believe that using the method in which the surgeon is experienced and that is the easiest to apply would be the best choice.

Resumo Objetivo O objetivo do presente estudo é investigar a estabilidade biomecânica de diferentes tipos de osteotomias subtrocantéricas e posições de enxertos em coxartroses displásicas que necessitam de artroplastia total de quadril com osteotomia de encurtamento, e determinar o tipo de osteotomia e a posição do enxerto que são mais eficazes. Método Modelos de fêmur (sawbones) foram usados para comparar os tipos de osteotomia de encurtamento femoral (transversal, oblíqua e emdegrau de escada [step-cut]). Os enxertos em haste, preparados do lado da osteotomia subtrocantérica, foram fixados em diferentes posições (ântero-lateral, medial-lateral e ântero-posterior). A fixação dos enxertos foi feita com2 cabos de aço (de 2,0mmde largura) de mesmaresistência.Os valores de falha dos fêmures compostos para cargas axiais e rotacionais foram registrados. Resultados Do ponto de vista biomecânico, não houve diferenças estatisticamente significativas entre os tipos de osteotomia de encurtamento subtrocantérico femoral e as posições dos enxertos em haste aplicados. Conclusão Não houve superioridade entre os tipos de osteotomia de encurtamento subtrocantérico femoral quanto à estabilidade. Além disso, em relação à resistência ao estresse, os resultados obtidos com diferentes posições das hastes foram similares. Assim, acreditamos que o método mais indicado é aquele em que o cirurgião é experiente e cuja aplicação é mais fácil.

Claudicación, resultados funcionales y calidad de vida en artroplastía total de cadera primaria con abordaje anterolateral mínimamente invasivo / Claudication, functional outcomes and quality of life in primary Total hip arthroplasty with minimally invasive anterolateral approach

Resumen: Introducción: La coxartrosis tiene incidencia de 88 casos por 100,000 personas/año y prevalencia sintomática de 16% para hombres y 6% para mujeres en edades de 65-74 años e incrementa con la edad. Representa una enfermedad de salud pública que va en aumento, la mujer es quien presenta padecimiento más grave. La ATC (artroplastía total de cadera) se ha convertido en el procedimiento más exitoso para mejorar la calidad de vida de pacientes con coxartrosis. Objetivo: Determinar la claudicación, calidad de vida y resultados funcionales de la ATC mediante abordaje mínimo invasivo en pacientes con coxartrosis primaria. Material y métodos: Estudio longitudinal y prospectivo en pacientes con coxartrosis primaria unilateral postoperados de ATC primaria con técnica mínimamente invasiva en el período comprendido de Marzo de 2015 a Febrero de 2016, se analizó a cada paciente con somatometría, calidad de vida (WOMAC), funcionalidad en pacientes con coxartrosis (HHS) y funcionalidad en pacientes con cirugía de cadera (OHS) de manera prequirúrgica y postquirúrgica con seguimiento a un año. Resultados: Se incluyeron 21 pacientes, 17 femeninos y cuatro masculinos que corresponde a 80.95 y 19.05%, respectivamente, edad promedio de 59.95 años (DE = 9.64), con resultados funcionales excelentes a un año, según escalas de HHS y OHS, calidad de vida alta en 100% de los casos según WOMAC, con índice de claudicación bajo de 4.76%. Discusión: El abordaje mínimo invasivo es una técnica quirúrgica reproducible con resultados funcionales excelentes, índice de claudicación baja y alta calidad de vida en pacientes postoperados de ATC primaria durante el primer año de seguimiento.

Abstract: Introduction: The coxarthrosis has incidence of 88 cases per 100,000 people/year and symptomatic prevalence of 16% men and 6% women aged 65-74 years and increases with age. It is a growing public health disease. Total hip arthroplasty (THA) has become the most successful procedure to increase the quality of life of patients with coxarthrosis. Our objective was to determine the claudication, quality of life and functional results of THA through minimal invasive approach in patients with primary coxarthrosis. Material and methods: Prospective longitudinal study in patients with unilateral primary coxarthrosis postop of THA with minimally invasive approach from March 2015-February 2016, each patient was analyzed with quality of Life instrument (WOMAC), Functional test for coxarthrosis (HHS) and functional test in patients with hip surgery (OHS) with follow-up of one year. Results: We included 21 patients, 17 female and 4 males corresponding to 80.95% and 19.05% respectively, average age of 59.95 years (ED = 9.64), with excellent functional results to one year according to HHS and OHS, quality of life high in 100% of cases according to WOMAC, with claudication rate of 4.76%. Discussion: The minimal invasive approach is a reproducible surgical technique, with excellent functional results, low claudication rate and high quality of life in postoperative patients of primary ATC at only one year of follow-up.

Sequential Bilateral Rapid Destructive Inflammatory Coxarthrosis in a Patient with Human Immunodeficiency Virus / 대한고관절학회지

The diagnostic criteria for sequential rapidly destructive coxarthrosis remain unclear and this condition is rarely reported in patients with human immunodeficiency virus (HIV). Here, we report a case of an HIV-infected 73-year old female who experienced hip joint destruction. The patient was diagnosed with HIV in 2012 (at age 68 years) and began continuous treatment with nucleoside reverse transcriptase and protease inhibitors. Twenty-nine months after her HIV diagnosis, the patient experienced osteonecrosis of the right hip and underwent a total hip arthroplasty (THA). Twelve months post right-hip THA, X-ray results showed good outcomes. Eight months later (20 months post THA), however, osteolysis of the left femoral head was detected upon radiological exam and THA of the left hip was performed; chronic inflammation and fibrosis were identified in the resultant biopsy. Favorable results were obtained at 3 months after the second surgery.

Coxartrosis resueltas quirúrgicamente: experiencia local en un hospital de segundo nivel / Surgically resolved coxarthrosis: local experience in a second level hospital

Contexto: la osteoartritis (OA) es la más común de las enfermedades reumáticas crónicas, causada mayoritariamente por sobrecarga excesiva a una articulación normal, carga normal sobre una articulación anatómicamente malformada o bien por carga normal asociada a una enfermedad ósea metabólica. Objetivo: estudiar la prevalencia de coxartrosis en pacientes tratados quirúrgicamente en el Servicio de Traumatología y Ortopedia del Hospital del Instituto Ecuatoriano de Seguridad Social de Ambato. Sujetos y métodos: se analizó la base de datos de 1969 pacientes intervenidos quirúrgicamente entre 2014 (985 pacientes) y 2015 (984 pacientes). Los criterios de inclusión son edad (25 a 98 años) y sexo (masculino y femenino). Resultados: se detectaron 1969 cirugías entre enero 2014 a diciembre 2015; por coxartrosis grado III-IV (n=65), fracturas de fémur (n=19) y otras (n=8). Del grupo coxopatías, 65 casos fueron diagnosticados de coxartrosis grado III-IV que ameritaron la colocación de una prótesis de cadera. En el 2014 predominaron pacientes del sexo masculino diagnosticados de coxartrosis (n= 20/39; p=0,51) en relación al sexo femenino (n=19/39; p=0,49) mientras que en el año 2015, aumentó la prevalencia de coxoartrosis en el sexo femenino (n=14/26; p=0,54) en relación al sexo masculino (n=12/26; p=0,46). Conclusión: la coxartrosis es un problema de importante prevalencia entre los pacientes del hospital del IESS de Ambato, a mayor edad cursa con más gravedad y resulta de forma necesaria realizar intervención quirúrgica, además las mujeres luego de los 60 años sufren coxartrosis de mayor gravedad. (AU)

Background: osteoarthritis (OA) is the most common of chronic rheumatic diseases. There are many forms can produce osteoarthritis such as excessive overload on the normal joint, normal loading in an anatomically malformed joint, and normal loading in conjunction with metabolic diseases. Objective: study the prevalence of coxarthrosis in patients of the traumatology and orthopedic department of the IESS Hospital in the city of Ambato, who required surgical treatment. Subjects and methods: we analyzed a universe of 1969 patients who underwent surgery between 2014 (985 patients) and 2015 (984 patients) at the Trauma and Orthopedic Service of the IESS Hospital in the city of Ambato, in addition to inclusion criteria Age (25 to 98 years) and sex (male and female). Results: 1969 surgeries were performed from January 2014 to December 2015, coxarthrosis grade 3-4 (n = 65), femoral fractures (n = 19), others (n = 8). Of the groups for coxopathies, 65 cases were diagnosed with coxarthrosis grade 3-4, which warranted a hip prosthesis placement. In 2014, it was determined that the patients with the highest prevalence of being diagnosed with coxarthrosis were male patients (n = 20/39; p = 0.51) in relation to the female sex (n = 19/39; p = 0.49), an increase in prevalence was noticed in 2015, since it was foundto be higher in females (n = 14/26, p = 0.54) than males (n = 12/26; P = 0.46). Conclusion: coxarthrosis is a problem of major prevalence among patients at the IESS Ambato hospital, the older it is, the more severe it is and surgical intervention is necessary, in addition women after 60 years suffer from more severe coxarthrosis. (AU)

Unusual Location of Hydatid Cysts: Report of Two Cases in the Heart and Hip Joint of Romanian Patients

Hydatid cyst is usually located in the liver and lungs, rare cases showing localization in other organs or tissues. In the unusual location, echinococcosis is an excluding diagnosis that is established only after microscopic evaluation. Our first case occurred in a 67-year-old female previously diagnosed with pulmonary tuberculosis and hospitalized with persistent pain in the hip joint. The clinical diagnosis was tuberculosis of the joint, but the presence of the specific acellular membrane indicated a hydatid cyst of the synovial membrane, without bone involvement. Fewer than 25 cases of joint hydatidosis have been reported in literature to date. In the second case, the intramural hydatid cyst was incidentally discovered at autopsy, in the left heart ventricle of a 52-year-old male hospitalized for a fatal brain hemorrhage, as a result of rupture of an anterior communicating artery aneurysm. The conclusion of our paper is that echinococcosis should be taken into account for the differential diagnosis of cystic lesions, independently from their location.

Comparison of Perioperative Blood Loss in Primary Non-cemented Total Hip Arthroplasty for Rapidly Destructive Coxarthrosis and Osteonecrosis of the Femoral Head / 대한고관절학회지

PURPOSE: The purpose of this study is to compare the perioperative blood loss in primary non-cemented total hip arthroplasty (THA) performed for rapidly destructive coxarthrosis (RDC) with the perioperative blood loss in primary non-cemented THA for typical osteonecrosis of the femoral head (ONFH). MATERIALS AND METHODS: From January 2000 to December 2013, 19 patients were diagnosed with RDC (group 1) and 40 patients were diagnosed typical Ficat stage IV ONFH (group 2), comparison of perioperative blood loss between group 1 and group 2 in primary noncemented THA was done. Patients with preoperative usage of steroid or anticoagulants medication and with hemodynamic abnormal blood test results were excluded. The blood loss was measured up to the fifth post operation day and calculated with formula proposed by Mercuriali, Inghilleri and Nadler. RESULTS: Non-compensated blood loss calculated in milliliters of red blood cells was 362 mL (standard deviation [SD], 187; range, 77-675) in group 1 and 180 mL (SD, 145; range, 53-519) in group 2. Compensated blood loss was 630 mL (SD, 180; range, 380-760) in group 1 and 503 mL (SD, 260; range, 190-1, 505) in group 2. The total blood loss after primary non-cemented THA is greater when surgery is performed for RDC than for ONFH, with the volume of 992 mL (SD, 300; range, 457-1, 434) in group 1 and 683 mL (SD, 360; range, 226-1, 975) in group 2 respectively. CONCLUSION: Total perioperative blood loss was significantly greater in RDC than in ONFH in primary non-cemented THA.

Rapid Destruction of the Hip Joint Accompanied by an Enlarged Iliopsoas Bursa in a Healthy Man / 대한고관절학회지

Association between enlarged iliopsoas bursa and hip lesions such as osteoarthritis of the hip or femoral head necrosis is infrequently seen. Enlarged iliopsoas bursa with a rapidly destructive arthropathy is claimed to be seen only in patients with rheumatoid arthritis. In this paper, we report a patient with a rapidly destructive arthropathy accompanied by an enlarged iliopsoas bursa that has been misdiagnosed as an infection.

Total Hip Arthroplasty Using S-ROM Prosthesis for Dysplastic Hip

PURPOSE: The purpose of this study was to evaluate the clinical and radiological results of total hip arthroplasty using a proximal modular femoral stem in patients who had secondary coxarthrosis associated with a dysplastic hip. MATERIALS AND METHODS: Forty-two patients (45 hips) with secondary coxarthrosis were evaluated after undergoing primary total hip arthroplasty using an S-ROM proximal modular femoral stem. The average follow-up was 80 months (range: 60 to 96 months). Clinical and radiological assessments were performed based on the Harris hip score and the radiological changes around the prosthesis. RESULTS: The average Harris hip score improved from 52.2 points to 88.5 points. All femoral stems showed stable fixation; there were 37 cases by bony ingrowth and 8 cases by stable fibrous ingrowth. Neither osteolysis nor progressive radiolucent lines around the femoral stem were found at the last follow-up. Forty-one hips (91.9%) revealed excellent or good clinical results at the most recent follow-up. CONCLUSION: For advanced secondary coxarthrosis, total hip arthroplasty with the use of the proximal modular femoral stem yielded good mid-term results with respect to the clinical and radiological criteria.

Rapidly Destructive Coxarthrosis in Patients with Rheumatoid Arthritis: Report on 3 Cases

Rapidly destructive coxarthrosis may be caused by osteoarthritis, osteonecrosis of the femoral head and rheumatoid arthritis, but its etiology has not been clarified. Rapidly destructive coxarthrosis generally occurs in old age patients and the patients clinically show severe pain, but a relatively preserved range of motion. Rapidly destructive coxarthrosis is characterized by a rapid destruction, resorption and subluxation of the femoral head, destruction of the articular area in the acetabulum, above 50% or 2 mm/year loss of the joint space and minimal osteophyte formation. The radiologic changes are dramatic and they may mimic neuropathic or septic arthritis. We report here on three cases of rheumatoid arthritis that had acute destruction of the hip joint and rapid resorption of the femoral head, and we also review the relevant medical literature. We recommend taking repetitive radiographs for rheumatoid arthritis patients who suffer with continuing severe hip pain.

Total Hip Arthroplasty with Use of Proximal Modular Femoral Stem in Secondary Coxarthrosis of Hip Associated with Deformed Femur

Purpose: The purpose of this study was to evaluate the clinical and radiological results of total hip arthroplasty using a proximal modular femoral stem in patients who had secondary coxarthrosis associated with a deformed femur. Materials and Methods: Forty-two patients (45 hips) with secondary coxarthrosis were evaluated after primary total hip arthroplasty using an S-ROM proximal modular femoral stem, between January 2001 and March 2004. The average follow-up was 44 months (range, 24 to 60 months). The mean age of the patients was 48.5 years old and there was a predominance of female patients (65.5%). The preoperative diagnoses included 26 cases of developmental dysplasia of the hip, 13 cases of sequalae of LCP, 2 cases of epiphyseal dysplasia, 3 cases of sequalae of pyogenic arthritis, and 1 case of congenital coxa vara. Results: The average Harris hip score improved from 52.2 points to 85.5 points. All the femoral stems demosntrated stable fixation, which included 37 cases by bony ingrowth and 8 cases by stable fibrous ingrowth. Neither osteolysis nor progressive radiolucent lines around the femoral stems were found at the latest follow-up. Postoperative complications included: 2 cases of hip dislocations, 1 case of periprosthetic fracture, 1 case of infected cup loosening, and 1 case of sciatic nerve palsy. Overall, forty-one hips (91.9%) exhibited excellent or good clinical results at the most recent follow-up. Conclusion: For advanced secondary coxarthrosis, total hip arthroplasty with use of a proximal modular femoral stem yielded good mid-term results based on clinical and radiological criteria.

MR Imaging of Osteonecrosis of the Femoral Head with Rapidly Destructive Coxarthrosis / 대한정형외과학회잡지

PURPOSE: In this study, we investigated the magnetic resonance (MR) imaging characteristics of rapidly destructive coxarthrosis (RDC) caused by osteonecrosis of the femoral head. MATERIAL AND METHOD: We reviewed 11 hip MR images (10 patients) of osteonecrosis of the femoral head with RDC. MR findings of 11 RDC were compared with those of Ficat stage IV osteonecrosis of the femoral head as a control. RESULTS: The MR findings of osteonecrosis, involving the entire femoral head, bone marrow edema in the acetabulum, intraarticular loose bodies on the inferomedial portion of the hip joint, and synovial proliferation were significant in RDC as compared with those of osteonecrosis of the femoral head only. CONCLUSION: Distinct findings of MR imaging in conjunction with plain radiographs could be used to facilitate diagnosis, treatment, and prognosis in RDC.

Rapidly Destructive Coxarthrosis / 대한정형외과학회잡지

From August 1976 to February 1997, we have experienced 29 cases of rapidly destructive coxarthrosis in 23 patients who represented severe hip pain and destruction of the femoral head more than 50% within one year. The retrospective analyses of clinical, radiographic and operative findings of 2090 hips in 1534 patients, who have been diagnosed as ischemic necrosis of femoral head were performed to investigate the correlation between ischemic necrosis of the femoral head and rapidly destructive coxarthrosis. The incidence of rapidly destructive coxarthrosis was 1 % of the overall ischemic necrosis of the femoral head. The average duration of hip pain was 9 months. The average age of the patients was 56 years old and most of them were male. The cultures of synovial fluid for bacteria were negative in all cases except one case of non-pathogenic organism. But, the erythrocyte sedimentation rate and C-reactive protein were elevated. The pathologic findings were not different from the ischemic necrosis except the destruction of articular cartilage. Therefore, we concluded that rapidly destructive coxarthrosis is a subtype of ischemic necrosis of the femoral head.