The Efficacy of Topical Tranexamic Acid in Femoral Neck Fractured Patients Undergoing Cemented Bipolar Hemiarthroplasty: A Randomized Double Blinded Controlled Trial / A eficácia do ácido tranexâmico tópico em pacientes com fraturas no pescoço femoral submetidos a hemiartroplastia bipolar cimentada: Um ensaio controlado duplo-cego randomizado

Abstract Objective Tranexamic acid (TXA) is an antifibrinolytic that is widely used for decreasing blood loss and blood transfusion rates in total hip arthroplasty. However, there is limited evidence of topical TXA usage in hip hemiarthroplasty for femoral neck fractures. The present study aimed to evaluate the effects of topical TXA on blood loss and on blood transfusions in femoral neck fracture patients who underwent cemented bipolar hemiarthroplasty. Methods Twenty-six patients with femoral neck fractures who were scheduled for bipolar cemented arthroplasty were randomized into two groups. The first group of 12 patients received topical TXA during their operation, whereas 14 patients in the second group received a placebo. Hematocrit was measured at 6 and 24 hours postoperatively. Blood transfusions and postoperative complications were also recorded. Results Total blood loss was not different between the TXA group and the control group (TXA group: 459.48 ± 456.32 ml, and control group: 732.98 ± 474.02 ml; p = 0.14). However, there were no patients within the TXA group who required a blood transfusion, while there were 4 patients in the control group who received allogenic blood transfusions (p = 0.044). There were no postoperative complications, such as wound complication, venous thromboembolism, or cardiovascular complications within either group. Conclusion Topical TXA could not decrease total blood loss but was able to reduce transfusion rates in patients who underwent cemented bipolar hip hemiarthroplasty in femoral neck fractures. Further studies in doses of topical TXA in a larger sample size would be beneficial. Level of Evidence II.

Resumo Objetivo O ácido tranexâmico (TXA) é um antifibrinolítico amplamente utilizado para diminuir as taxas de perda de sangue e de transfusão de sangue na artroplastia total do quadril. No entanto, há evidências limitadas de uso tópico de TXA na hemiartroplastia do quadril para fraturas no pescoço femoral. O presente estudo teve como objetivo avaliar os efeitos do TXA tópico na perda de sangue e transfusões de sangue em pacientes com fratura femoral que foram submetidos a hemiartroplastia bipolar cimentada. Métodos Vinte e seis pacientes com fraturas no pescoço femoral e programados para artroplastia cimentada bipolar foram randomizados em dois grupos. O primeiro grupo de 12 pacientes recebeu TXA tópico durante a operação; no segundo grupo, 14 pacientes receberam placebo. O hematócrito foi medido às 6 e 24 horas no pósoperatório. Também foram registradas transfusões de sangue e complicações pósoperatórias. Resultados A perda total de sangue não foi diferente entre o grupo TXA e o grupo controle (grupo TXA: 459,48 ±456,32 ml; e grupo controle: 732,98 ±474,02 ml; p = 0,14). No entanto, não houve pacientes dentro do grupo TXA que necessitaram de transfusão de sangue, enquanto 4 pacientes no grupo controle fizeram transfusões de sangue halogênicas (p = 0,044). Não houve complicações pós-operatórias, tais como complicação da ferida, tromboembolismo venoso ou complicações cardiovasculares dentro de qualquer grupo. Conclusão O TXA tópico não conseguiu diminuir a perda total de sangue, mas foi capaz de reduzir as taxas de transfusão, em pacientes submetidos a hemiartroplastia de quadril bipolar cimentada em fraturas no pescoço femoral. Outros estudos com doses de TXA tópico em um tamanho amostral maior seriam benéficos. Nível de Evidência II.

Treatment of femoral neck fractures with closed reduction assisted by joystick technique and cannulated screw fixation / 中国修复重建外科杂志

OBJECTIVE@#To investigate the effectiveness of joystick technique assisted closed reduction and cannulated screw fixation in the treatment of femoral neck fracture.@*METHODS@#Seventy-four patients with fresh femoral neck fractures who met the selection criteria between April 2017 and December 2018 were selected and divided into observation group (36 cases with closed reduction assisted by joystick technique) and control group (38 cases with closed manual reduction). There was no significant difference in gender, age, fracture side, cause of injury, Garden classification, Pauwels classification, time from injury to operation, and complications (except for hypertension) between the two groups ( P>0.05). The operation time, intraoperative infusion volume, complications, and femoral neck shortening were recorded and compared between the two groups. Garden reduction index was used to evaluate the effect of fracture reduction, and score of fracture reduction (SFR) was designed and was used to evaluate the subtle reduction effect of joystick technique.@*RESULTS@#The operation was successfully completed in both groups. There was no significant difference in operation time and intraoperative infusion volume between the two groups ( P>0.05). All patients were followed up 17-38 months, with an average of 27.7 months. Two patients in the observation group received joint replacement due to failure of internal fixation during the follow-up, and the other patients had fracture healing. Within 1 week after operation, the Garden reduxtion index of the observation group was better than the control group; the SFR score of the observation group was also higher than that of the control group; the proportion of femoral neck shortening within 1 week after operation and at 1 year after operation in the observation group were lower than those in the control group. The differences of the above indexes between the two groups were significant ( P<0.05).@*CONCLUSION@#The joystick technique can improve the effectiveness of closed reduction of femoral neck fractures and reduce the incidence of femoral neck shortening. The designed SFR score can directly and objectively evaluate the reduction effect of femoral neck fracture.

Assessment of the local blood supply when femoral neck fracture occurs:advances in the anatomy research and its clinical application / 中国骨伤

The stability of internal fixation of femoral neck fractures can be obtained through surgical techniques, the configuration of screws and bone grafting, etc. However, the blood supply injury caused by fractures could not be completely reversed by the current medical management. Hence, the comprehensive evaluation of the residual blood supply of the femoral neck, to perioperatively avoid further iatrogenic injury, has become a hotspot. The anatomy of the extraosseous blood supply of the femoral neck has been widely reported, while its clinical application mostly involved the assessment of the medial circumflex femoral artery and retinacular arteries. However, further studies are needed to explore the prognosis of patients with these artery injuries, with different degrees, caused by femoral neck fractures. Direct observations of nutrient foramina in vivo are not possible with current clinical technologies, but it is possible to make reasonable preoperative planning to avoid subsequent femoral head necrosis based on the distribution features of nutrient foramina. The anatomy and clinical application studies of the intraosseous blood supply focused on the junction area of the femoral head and neck to probe the mechanism of femoral head necrosis. Thus, the intraosseous blood supply of other regions in the femoral neck remains to be further investigated. In addition, a blood supply evaluation system based on a three-level structure, extraosseous blood vessels, nutrient foramina, and intraosseous vascular network, could be explored to assist in the treatment of femoral neck fractures.

Interpretations of Management of Hip Fractures in Older Adults:Evidence-Based Clinical Practice Guideline dopted by AAOS 2021 / 中国骨伤

American Academy of Orthopaedic Surgeons (AAOS) just released the up-to-date <Management of Hip Fractures in Older Adults:Evidence-Based Clinical Practice Guideline>, which has become the principles to care hip fractures in the elderly. In comparison to the Guideline 2014, considerable changes are made in terms of guideline composition and focused items. The interval of 7 years yielded dramatic progress in the care of geriatric hip fractures, including the recommendation of cemented femoral stems in hip arthroplasty due to displaced femoral neck fractures, cephalomedullary device for unstable intertrochanteric fractures and tranexamic acid to reduce blood loss and blood transfusion. Additionally, the individualized properties of the elderly with hip fractures should be noted to balance an early operation within 24 and 48 hours and patient safety. The interpretation of <Management of Hip Fractures in Older Adults:Evidence-Based Clinical Practice Guideline> is helpful to comprehensively understand the progress of the care of geriatric hip fractures, thus to make orthopaedic surgeons master the key points of clinical practice, and to improve the quality of operations and decrease perioperative complications.

Review of closed reduction techniques for femoral neck fracture / 中国骨伤

For patients with femoral neck fractures who plan to undergo internal fixation, satisfied alignment of fracture ends is an important prerequisite for internal fixation stability and fracture healing. There are many reports on the reduction methods of displaced femoral neck fractures, which can be summarized into three categories:First, the solely longitudinal traction of lower limbs, supplemented by other manipulations such as rotation and compression; Second, the resultant force formed by the longitudinal traction of lower limbs and the lateral traction;the third is accomplished by vertical traction in the axis of femur with hip joint flexed. Each reduction method has its own advantages, but no single method can be applied to all fracture displacement. In this paper, some classical reduction techniques in the literatures are briefly reviewed. It is hoped that clinicians will not be limited to a certain reduction method, they should analyze the injury mechanism and fracture displacement process according to the morphology features and flexibly select targeted reduction methods to improve the success rate of closed reduction of femoral neck fracture.

Biomechanical analysis of four internal fixations for Pauwels Ⅲ femoral neck fractures with defects / 中国骨伤

OBJECTIVE@#To investigate the biomechanical characteristics of different internal fixations for Pauwels type Ⅲ femoral neck fracture with defect, and provide reference for the treatment of femoral neck fracture.@*METHODS@#Three-dimensional (3D) finite element models of femoral neck fractures were established based on CT images, including fracture and fracture with defects. Four internal fixations were simulated, namely, inverted cannulated screw(ICS), ICS combined with medial buttress plate, the femoral neck system (FNS) and FNS combined with medial buttress plate. The von Mises stress, model stiffness and fracture displacements of fracture models under 2 100 N axial loads were measured and compared.@*RESULTS@#When femoral neck fracture was fixed by ICS and FNS, the peak stress was mainly concentrated on the surface of the screw near the fracture line, and the peak stress of FNS is higher than that of ICS;When the medial buttress plate was combined, the peak stress was increased and transferred to medial buttress plate, with more obvious of ICS fixation. For the same fracture model, the stiffness of FNS was higher than that of ICS. Compared with femoral neck fracture with defects, fracture model showed higher stiffness in the same internal fixation. The use of medial buttress plate increased model stiffness, but ICS increased more than FNS. The fracture displacement of ICS model exceeded that of FNS.@*CONCLUSION@#For Pauwels type Ⅲ femoral neck fracture with defects, FNS had better biomechanical properties than ICS. ICS combined with medial buttress plate can better enhance fixation stability and non-locking plate is recommended. FNS had the capability of shear resistance and needn't combine with medial buttress plate.

Biomechanical characteristics of retinaculum in the treatment of femoral neck fractures / 中国骨伤

OBJECTIVE@#To investigate the biomechanical characteristics of retinaculum in the treatment of femoral neck fractures.@*METHODS@#The CT data of a 75-year-old female volunteer was processed by software to construct an intact femur model and femoral neck fracture model fixed with three cannulated screws, which were divided into models with retinaculum or not. The Von-Mises stress distribution and displacement were compared to analyze the stability differences between the different models to study the mechanical characteristics of the retinaculum in the treatment of femoral neck fractures.@*RESULTS@#In the intact femur, the most obvious displacement appeared in the weight-bearing area of the femoral head, with retinaculum 0.381 37 mm, and without retinaculum 0.381 68 mm. The most concentrated part of the Von-Mises stress distribution was located in the medial and inferior part of the femoral neck, with retinaculum 11.80 MPa, without retinaculum 11.91 MPa. In the femoral neck fracture fixed with three cannulated screws model, the most obvious position of displacement also appeared in the weight-bearing area of the femoral head, with retinaculum 0.457 27 mm, without retinaculum 0.458 63 mm. The most concentrated part of the Von-Mises located at the medical and inferior part of the femoral neck, with retinaculum 59.22 MPa, without retinaculum 59.14 MPa. For the cannulated screws, the Von-Mises force peaks all appeared in the posterior and superior screw, with retinaculum 107.48 MPa, without retinaculum 110.84 MPa. Among the three screws, the Von-Mises stress of the anterior-superior screw was the smallest, which was 67.88 MPa vs 68.76 MPa in the retinaculum and non-retinaculum groups, respectively.@*CONCLUSION@#The complete retinaculum has little effect on the stability of intact femur and femoral neck fractures with anatomical reduction after internal fixation, and cannot effectively improve the stability of the fracture end after the fracture.

Comparison of effect between internal fixation and total hip replacement in the treatment of displaced femoral neck fracture in middle age patients / 中国骨伤

OBJECTIVE@#To analyze and compare the clinical efficacy of internal fixation and total hip replacement in the treatment of displaced femoral neck fracture from 55 to 65 years.@*METHODS@#From September 2016 to August 2020, 86 patients with Garden type Ⅲ or Ⅳ femoral neck fracture were divided into two groups according to different surgical methods. Among them, 38 patients were treated with lag screws for internal fixation, there were 26 males and 12 females, aged 55 to 64 years old with an average of(60.2±3.1) years;the other 48 patients were treated with total hip replacement, including 28 males and 20 females, aged from 57 to 65 years old with an average of(61.3±3.8) years. The time from injury to operation ranged from 1 to 3 days. The reoperation rate, incidence of deep infection, Harris score of hip joint function, visual analogue scale(VAS) of pain and patients reported outcome scores(European five-dimensional Health Questionnaire, EQ-5D) were compared between two groups.@*RESULTS@#All patients were followed up for 24 to 54 months with an average of (35.8±10.3) months. There was significant difference in reoperation rate between two groups (P<0.05). There was no significant difference on the incidence of deep infection, hip Harris score and VAS between two groups(P>0.05) . The postoperative EQ-5D score of patients with internal fixation was lower than that of total hip replacement, and the difference was statistically significant(P<0.05).@*CONCLUSION@#Both the surgery of internal fixation and total hip replacement have similar effect in short-and medium term among the patients aged 55 to 65 years old. However, for the reoperation rate, the group of internal fixation was higher than that of total hip replacement. For the subjective functional score of patients, the group of internal fixation was lower than that of total hip replacement.

Comparison of curative effect between percutaneous compression plate and cannulated compression screw in the treatment of displaced femoral neck fractures in young and middle-aged patients / 中国骨伤

OBJECTIVE@#To compare the efficacy of percutaneous compression plate and cannulated compression screw in the treatment of displaced femoral neck fractures in young and middle-aged patients.@*METHODS@#From January 2015 to July 2020, 68 young and middle-aged patients with displaced femoral neck fracture were retrospectively analyzed. Among them, 31 cases were fixed by percutaneous compression plate (PCCP), and 37 cases were fixed by cannulated compression screw (CCS). General data such as gender, age, cause of injury, comorbidities, fracture classification and cause of injury of two groups were collected. The operation time, intraoperative blood loss, hospital stay, full weight bearing time, fracture healing time, visual analogue scale(VAS), Harris hip score and complications were compared between two groups.@*RESULTS@#Patients in both groups were followed up for more than 2 years. There were no significant differences in operation time, intraoperative blood loss, fracture reduction quality, hospital stay and VAS between two groups. The fracture healing time in PCCP group was significantly shorter than that in CCS group (t=-4.404, P=0.000). The complete weight bearing time of PCCP group was significantly shorter than that of CCS group (t=-9.011, P=0.000). Harris score of hip joint in PCCP group was better than that in CCS group 2 years after operation (P=0.002). Complications occurred in 3 cases (9.68%) in PCCP group, while 11 cases (29.72%) in CCS group, with a statistically significant difference (P=0.042).@*CONCLUSION@#Both PCCP and CCS can be used for the treatment of displaced femoral neck fractures in young and middle-aged people. Compared with CCS, PCCP fixation can achieve shorter fracture healing time and create conditions for early full weight bearing. PCCP results in higher hip score and lower complications.

Comparison of curative effect between Tianji robot assisted screw placement and traditional cannulated screw internal fixation for femoral neck fracture / 中国骨伤

OBJECTIVE@#To investigate the clinical efficacy and advantages of Tianji orthopedic robot assisted cannulated screw internal fixation for femoral neck fracture.@*METHODS@#The clinical data of 41 patients with femoral neck fracture who underwent internal fixation with cannulated screws from January 2019 to January 2022 were retrospectively analyzed. According to different surgical methods, they were divided into Tianji robot group and traditional cannulated screw fixation group (traditional operation group). Among them, there were 18 patients in Tianji robot group including 8 males and 10 females with age of (56.00±4.22) years old, Garden typeⅠ (4 cases), type Ⅱ (11 cases), type Ⅲ (2 cases), and type Ⅳ (1 case). There were 23 patients in the traditional operation group, including 10 males and 13 females, aged (54.87±4.81) years old;there were 5 cases of Garden typeⅠ, 14 cases of type Ⅱ, 3 cases of type Ⅲ and 1 case of type Ⅳ. The operation time, intraoperative blood loss, fluoroscopy times, guide needle placement times, operation costs and other indicators were observed and compared between two groups. Harris score was used to evaluate hip joint function 12 months after operation.@*RESULTS@#The wounds of all patients healed in Grade A without complications. There were significant differences between two groups in terms of operation time, times of intraoperative fluoroscopy, times of guide needle placement, amount of intraoperative bleeding, and operation cost (P<0.05). All 41 patients were followed up for at least 12 months. The fractures of both groups were healed. There was no infection, screw loosening, fracture displacement and femoral head necrosis in Tianji robot group during follow-up;Screw loosening occurred in 2 patients in the traditional operation group during follow-up. At 12 months after operation, Harris hip joint function score of Tianji robot group was higher than that of traditional operation group in daily activity, lameness, joint activity score and total score (P<0.05).@*CONCLUSION@#Tianji robot assisted nail placement is a better method for the treatment of femoral neck fracture, which improves the surgical efficiency, is more accurate, has higher success rate of one-time nail placement, shorter operation time, less radiation, and has better hip joint function recovery after surgery.

Disastrous triad of femoral head:femoral neck fracture meeting fracture-dislocation of femoral head / 中国骨伤

Femoral head and ipsilateral femoral neck fractures are serious and complicated injuries, which usually yield unsatisfactory results using conventional hip-preserving surgery. The key point of the management and prognosis mainly lies in femoral neck fractures. An apparent and consecutive relationship exists between femoral neck fractures and femoral head fracture-hip dislocation in such injuries. It is believed that disastrous triad of femoral head (DTFH) could summarize these specific injuries, and reflect the injury mechanism and prognostic characteristics. Based on our clinical observation and literature review, DTFH could be divided into three subgroups:TypeⅠ, common DTFH, in which femoral neck fractures occur following femoral head fractures-hip dislocation due to the same trauma; TypeⅡ, iatrogenic DTFH, in which femoral neck fractures come out in the caring process of femoral head fractures-hip dislocation; Type Ⅲ, stressed DTFH, in which femoral neck fractures occur after the management of femoral head fractures-hip dislocation. In the scenario, the line of femoral neck fractures locates distally to the femoral head fractures. Herein, we will discuss clinical characteristics of these types of DTFH.

Application of 3D printing percutaneous guide plate in closed reduction and cannulated screw internal fixation of femoral neck fracture / 中国骨伤

OBJECTIVE@#To investigate the application of 3D printing percutaneous surgical guide plate in closed reduction and cannulated screw internal fixation of femoral neck fracture.@*METHODS@#The clinical data of 12 patients with femoral neck fracture from March 2019 to March 2022 were retrospectively analyzed. Patients were divided into observation group and control group according to different operation plans, with 6 cases in each group. The observation group received percutaneous operation guide plate assisted closed reduction and hollow screw internal fixation, while the control group received closed reduction and hollow compression screw internal fixation. The operation time, intraoperative blood loss, fluoroscopy times, and Kirschner needle puncture times were compared between two groups. The location of screws were recordedon postoperative X-ray films, follow-up time, time of complete fracture healing, Harris score of hip joint and the incidence of complications were recorded on postoperative X-ray films.@*RESULTS@#The operation time of observation group (32.17±6.18) min was shorter than that of control group (53.83±7.31) min (P<0.05). The amount of intraoperative bleeding in the observation group (18.33±2.94) ml was less than that in the control group (38.17±5.56) ml(P<0.05). The times of fluoroscopy in the observation group (7.50±1.05) were less than those in the control group (21.00±4.82) (P<0.05). The number of Kirschner needle punctures (8.00±0.63) in observation group was less than that in control group (32.67±3.08) (P<0.05). The follow-up time was(12.88±0.74) months in observation group and (12.83±0.72) months in control group, there was no significant difference between two groups (P>0.05). One year after operation, Harris score of hip joint in the observation group was(82.00±4.52) points, while that in the control group was(81.00±3.41) points, there was no significant difference between two groups(P>0.05). The time of complete fracture healing in the observation group was (7.50±1.05) months, while that in the control group was (7.67±1.21) months, there was no significant difference between two groups(P>0.05). The parallelism of the screws in the observation group was (0.50±0.11) ° and (0.76±0.15) °, which were lower than that in the control group (1.57±0.31) ° and (1.87±0.21) ° (P<0.05). The screw distribution area ratio (0.13±0.02) cm2 in the observation group was higher than that in the control group (0.08±0.01) cm2 (P<0.05). No complications such as necrosis of femoral head, nonunion of fracture, shortening of femoral neck and withdrawal of internal fixation occurred in both groups.@*CONCLUSION@#The application of 3D printing percutaneous surgical guide plate improves the accuracy and safety of closed reduction and cannulated screw internal fixation for femoral neck fracture. It has the advantages of minimally invasive, reducing radiation exposure, fast and accurate, shortening the operation time and reducing intraoperative bleeding.

Surgical treatment for ipsilateral femoral neck and shaft fracture / 中国骨伤

OBJECTIVE@#To retrospectively analyze efficacy of single structure internal fixation and double structure internal fixation in the treatment of ipsilateral femoral shaft and neck fracture, and analyze their indications.@*METHODS@#From June 2015 to December 2020, 21 patients with ipsilateral femoral shaft and femoral neck fracture were treated, including 14 males and 7 females, aged 23 to 69 years old with an average of(38.1±12.9) years old. According to different femoral shaft fracture sites, some patients were fixed with cephalomedullary implant for both femoral neck and the femoral shaft(single structure, InterTan or PFNA Ⅱ), some patients were fixed with cannulated screws for the femoral neck and a retrograde locking nail for the femoral shaft (dual structure), and postoperative function and complications were recorded during follow-up. In 10 cases of single-structure fixation, the femoral necks were all basicervical fractures, and the femoral shaft fractures were located in the proximal isthmus;11 cases were double-structure fixation, 9 cases in 11 were basal type of femoral neck, 2 cases in 11 were neck type, and the femoral shaft fractures were located in the isthmus and the distal isthmus.@*RESULTS@#All patients were followed up for 12 to 27 months. No femoral head necrosis, deformity, delay or nonunion occurred in the patients with single-structure fixation, and no delayed union or nonunion occurred in femoral shaft fractures;At the final follow-up, Harris score of patients with single-structure fixation was 91.8±4.1, with 8 cases were excellent and 2 cases were good. The fractures of patients with dual-structure fixation achieved good union without femoral head necrosis, except 1 case of femoral shaft fracture had delayed union;At the final follow-up, Harris score of patients with dual-structure fixation was 92.4±5.9, 7 cases were excellent, 3 cases were good, and 1 case was fair.@*CONCLUSION@#Good reduction and fixation is the key to the treatment of such fractures. Both the single-structure fixation and the dual-structure fixation are good methods, and it should be selected according to the locations of femoral shaft and femoral neck fractures. Single-structure fixation is a good choice for femoral shaft fractures located at the proximal isthmus and basal femoral neck fractures. For isthmus and distal femoral shaft fractures combined with ipsilateral femoral neck fractures, dual-structure fixation is recommended.

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.

Intracapsular Femoral Neck Fractures in the Elderly / Fraturas intracapsulares do colo femoral no idoso

Abstract Currently, intracapsular femoral neck fracture (IFNF) is still a great challenge for orthopedists. In spite of the progress that has been made, a high mortality rate persists in the first year, especially in Brazil, where there is no awareness that such fractures in elderly patients should be treated as amedical emergency. The present article seeks to provide an update on the preoperative, surgical, and postoperative approaches.

Resumo Atualmente, a fratura intracapsular do colo femoral (FICF) ainda é um grande desafio para os ortopedistas. Apesar dos grandes avanços feitos, persiste uma grande taxa de mortalidade no primeiro ano, sobretudo no Brasil, onde não há uma conscientização de que tais fraturas nos pacientes idosos devemser tratadas como uma urgênciamédica. O presente artigo busca fornecer uma atualização das condutas pré-operatórias, cirúrgicas e pós-operatórias.

Fracturas del extremo superior del fémur por fragilidad. Principios del comanejo / Fractures of The Upper End of the Femur Due to Fragility. Co-Management Principles

Introducción: El rápido crecimiento de la población geriátrica va aparejado al aumento de fracturas por fragilidad. Ello crea la necesidad de un programa integral para el tratamiento del paciente anciano con fracturas por fragilidad y del extremo superior del fémur. Los modelos de comanejo ortogeriátrico son empleados en muchos países. Objetivo: Presentar los distintos modelos de atención ortogeriátrica y analizar el modelo de comanejo de pacientes geriátricos con fracturas por fragilidad, principalmente la fractura del extremo superior del fémur. Métodos: Se realizó una búsqueda en la base de datos PubMed de trabajos publicados entre los años 2010-2020 con los términos: modelos de atención ortogeriátrica, comanejo de pacientes ortopédicos geriátricos, comanejo de fracturas por fragilidad y comanejo ortogeriátrico en fracturas del extremo superior de fémur. Conclusiones: El modelo de comanejo de las fracturas por fragilidad y de fémur proximal da como resultado una estadía hospitalaria más corta, tasas de reingreso y de complicaciones más bajas y una tasa de mortalidad menor a la esperada, por lo cual ofrece muchos beneficios para pacientes, médicos y sistema de salud(AU)

Introduction: The rapid growth of the geriatric population is coupled with the increase in fragility fractures. This creates the need for a comprehensive program for the treatment of the elderly patient with fragility fractures and fractures of the upper end of the femur. Orthogeriatric co-management models are used in many countries. Objective: To present the different models of orthogeriatric care and to analyze the model of co-management of geriatric patients with fragility fractures, mainly fractures of the upper end of the femur. Methods: A search was made in the PubMed database of works published in the years 2010-2020 with the terms orthogeriatric care models, co-management of geriatric orthopedic patients, co-management of fragility fractures and co-management orthogeriatric in fractures of the upper end of the femur. Conclusions: The co-management model for fragility and proximal femur fractures results in a shorter hospital stay, lower readmission and complication rates, and a lower-than-expected mortality rate, thus offering many benefits for patients, doctors and health system(AU)

Luxación de cadera asociada a fractura del extremo proximal de fémur: reporte de caso y revisión del tema / Hip dislocation associated with fracture of the proximal end of the femur: case report and literature review / Luxação do quadril associada a fratura da extremidade proximal do fêmur: relato de caso e revisão da literatura

Las luxaciones traumáticas de cadera son poco frecuentes, y es excepcional la asociación lesional con fracturas del extremo proximal de fémur, habitualmente producidas por accidentes de alta energía. Un correcto diagnóstico, y tratamiento adecuado de la fractura, es la conducta ideal para disminuir las complicaciones. Presentamos el caso de un paciente masculino 49 años trabajador de la construcción que, en un accidente de tránsito, sufre una luxación de cadera asociado a fractura de cuello femoral, con excepcional presentación radiológica, con lesión del nervio CPE (ciático poplíteo externo), en que se realizó artroplastia total de cadera, con buena evolución y rehabilitación, retornando a su actividad laboral a los 11 meses del accidente. A propósito de este caso, realizamos una revisión bibliográfica para evaluar el tratamiento propuesto, el ideal, y pronóstico funcional de estas lesiones.

Traumatic hip dislocations are rare, and associated injuries involving fractures of the proximal end of the femur, usually as a result of high-energy accidents, are exceptional. A correct diagnosis and adequate treatment of the fracture is the most appropriate way to reduce complications. We present the case of a 49-year-old male construction worker who, as a result of a traffic accident, suffers from a hip dislocation associated with a femoral neck fracture, with exceptional radiological presentation, with injury to the EPS (External Popliteal Sciatic) nerve. Total hip arthropathy was performed, with good evolution and rehabilitation, and patient returned to work 11 months after the accident. In this particular case, we carried out a bibliographic review to evaluate the proposed treatment, the ideal treatment, and the functional prognosis of these injuries.

As luxações traumáticas do quadril são raras, e a associação de lesão com fraturas da extremidade proximal do fêmur, geralmente causada por acidentes de alta energia, é excepcional. O diagnóstico correto e o tratamento adequado da fratura é a abordagem ideal para reduzir as complicações. Apresentamos o caso de um operário da construção civil, 49 anos, que, em acidente de trânsito, sofre luxação de quadril associada a fratura do colo do fêmur, com apresentação radiológica excepcional, com lesão do nervo ciático poplíteo externo (CPE), em onde foi realizada a artroplastia total do quadril, com boa evolução e reabilitação, retornando ao trabalho 11 meses após o acidente. Em relação a este caso, realizamos uma revisão bibliográfica para avaliar o tratamento proposto, o ideal e o prognóstico funcional dessas lesões.

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.

Factores de riesgo de inestabilidad en el reemplazo total de cadera por fractura medial de cadera / Instability risk factors in total hip arthroplasty for femoral neck fracture

Introducción: Una de las complicaciones más importantes de la artroplastia total de cadera en el tratamiento de las fracturas es la luxación, con una tasa del 10%, cinco veces mayor que la de la artroplastia total de cadera por osteoartrosis. El objetivo de este estudio fue conocer nuestra incidencia de luxación en pacientes sometidos a artroplastia total de cadera por fractura del cuello femoral y evaluar la causa de la luxación. Materiales y Métodos: Estudio retrospectivo en 110 pacientes sometidos a artroplastia total de cadera por fractura medial de cadera (edad promedio 69 años; 71% mujeres). Se evaluaron el tipo de fijación de la prótesis, el tamaño de la cabeza, el offset y el abordaje quirúrgico. Se midieron los ángulos de inclinación y de anteversión acetabulares y se registraron las comorbilidades. Resultados: El 72% de las cirugías fueron por vía posterolateral. La vía anterolateral se asoció con una copa 7° más vertical (p = 0,001). El 65,4% de las cabezas eran de 32 mm. El 15% (3/20) de las cabezas chicas (22 y 28 mm) y el 1% (1/90) de las grandes se luxaron (p = 0,0027). No se luxó ninguna cabeza de 36 mm. Las comorbilidades neurológicas más frecuentes fueron depresión, Parkinson y Alzheimer. Conclusiones: Las cabezas de pequeño diámetro junto con el mal posicionamiento de la prótesis y las enfermedades neurocognitivas se asocian a una inestabilidad mayor. El uso de cabezas de 36 mm y la correcta orientación de los componentes son suficientes para asegurar la estabilidad. Nivel de Evidencia: III

Introduction: One of the most relevant complications of total hip arthroplasty (THA) in the treatment of fractures is a dislocation rate of 10%, which is 5 times higher than that of THA for osteoarthritis. Our objective was to determine the dislocation rate in patients treated with THA due to femoral neck fracture and to evaluate the cause of dislocation. Materials and Methods: We carried out a retrospective study on 110 THAs in patients with femoral neck fractures (the average age was 69 years, and 71% were women). The type of fixation of the prosthesis, the size of the head, the offset, and the surgical approach were evaluated. The angle of acetabular inclination and anteversion and the comorbidities were measured. Results: 72% of surgeries were performed through the posterolateral approach. The anterolateral approach is associated with a 7° more vertical cup (p=0.001). 65.4% of the heads were 32 mm. 15% of the small heads (22 and 28mm) (3/20) and only 1% of the large heads (1/90) dislocated (p=0.0027). No 36-mm heads were dislocated. Depression, Parkinson's, and Alzheimer's disease were the most frequent neurological comorbidities. Conclusions: Small-diameter heads, in combination with poor positioning of the prosthesis and neurocognitive diseases, are associated with greater instability. Using prosthetic heads with a diameter of 36 mm and a correct orientation of the components is sufficient to ensure stability. Level of Evidence: III

Comparison of femoral neck geometric parameters between Chinese and Japanese females / 中南大学学报(医学版)

OBJECTIVES@#Femoral neck fracture is the most serious osteoporotic fractures that is responsible for high medical costs and high mortality. Femoral neck geometric parameters (FNGPs) are important parameters that reflect the geometrical characteristics of femoral neck, and are closely related to the strength of femoral neck and the risk of fragility fracture.There are differences in the incidence of femoral neck fractures among races. However, whether there is difference in FNGPs among races is unknown.Therefore, this study aims to compare the differences in FNGPs between Chinese and Japanese females.@*METHODS@#This study was a cross-sectional study, in which 3 859 healthy females aged 10-86 (45.7±17.1) years old were recruited from Changsha City of Hunan Province and surrounding areas. The weight and height were measured and recorded, and the body mass index (BMI) was calculated. A dual energy X-ray absorptiometry (DXA) bone densitometer was used to measure femoral neck projective bone area (BA) and bone mineral density (BMD). FNGPs were calculated using the BMD and BA, which included the outer diameter (OD), cross-sectional area (CSA), cortical thickness (CT), endocortical diameter (ED), buckling ratio (BR), section modulus (SM), cross-sectional moment of inertia (CSMI), and compression strength index (CSI). The data of FNGPs in Japanese females was collected from literature. These subjects were grouped by 10-year age. The mean and standard deviation of height, weight, BMI, femoral neck BMD, and FNGPs of each group were calculated. The model with the best goodness-of-fit was selected from various mathematical regression models to analyze the distribution trend and the best fitting curve of FNGPs with age. The differences in FNGPs between Chinese and Japanese females were analyzed by using age-corresponding mean fitting curve for paired t-test, and the relative change rates of FNGPs were compared.@*RESULTS@#The mean values of FNGPs were significantly different among different years old healthy females (all P<0.01). The mean values of OD, CSA, CT, SM, and CSMI in femoral neck were high at 30 to 39 years old, and then they were gradually decreased with age. The CSI reached its peak at 20-29 years old, and it was decreased gradually after 30 years old. ED and BR were at a low level before 40 years old, they were gradually increased after 40 years old, and reached the maximum average value at 80-86 years old. The variations in FNGPs with age were fitted with the best goodness-of-fit by applying the cubic regression model and the determination coefficients of regression equations (R2: 0.062-0.404) were significant (all P<0.01). The distribution trend of FNGPs with age varied with the indices, among which CSA, CT, SM, CSMI and CSI were increased with age before 35 years old, and then they were decreased with age; BR was at a low level in the early stage, and then it was increased with age after about 40 years. There were significant differences in the fitting curves of FNGPs related to age between Chinese and Japanese females (all P<0.01). The fitting curves of OD, ED, BR and SM in Chinese females were significantly higher than those in Japanese females (all P<0.01), while those of CSA and CT in Chinese females were significantly lower than those in Japanese females (all P<0.01). Before the age of 50, the curves of CSMI and CSI of Chinese females were significantly higher than those of Japanese females (all P<0.01), while after the age of 60 the situation was reversed (all P<0.01). Except for SM and CSI, there were significant differences in the rate of OD, CSA, CT, ED, BR and CSMI with age (all P<0.01). By the age of 80 years old, the rates of change in OD, ED, and BR with the age in Chinese females were increased by 0.91%,3.94%, and 47.5%, respectively, while those in Japanese females were increased by 8.57%, 15.8% and 85.3%, respectively；the rates of change of CSA, CT, and CSMI with the age in Chinese females were declined 28.0%, 29.6%, and 25.2%, respectively, while those in Japanese females were declined 29.9%, 36.2%, and 10.9%, respectively. There were significant difference in the rates of change in FNGPs with the age between Chinese and Japanese females (all P<0.01).@*CONCLUSIONS@#The study reveals the variation of FNGPs with age in Chinese, and confirms that there are racial differences in FNGPs between Chinese and Japanese females, which may be one of the important reasons for the difference in the incidence of femoral neck fracture between Chinese and Japanese females.