Relationship of the Pelvic-Trochanteric Index with greater trochanteric pain syndrome.

OBJECTIVES: This study aimed to correlate a higher Pelvic-Trochanteric Index (PTI) with an increased varus of the femoral neck with greater trochanteric pain syndrome (GTPS). The secondary objective was to check whether the pelvic width changes with age. METHODS: A prospective study was conducted to compare female patients diagnosed with GTPS (case group) with asymptomatic female participants (control group) from March 2011 to June 2017. On an anteroposterior pelvic radiograph, lines were drawn by two radiologists, and the PTI (ratio of the distance between the greater trochanters and distance between the iliac crests) was defined and the femoral neck-shaft angle was measured. RESULTS: Data collected based on radiographs of 182 female patients (cases) and 150 female participants (controls) showed that the mean PTI was 1.09 (SD=0.01) in the case group and 1.07 (SD=0.01) in the control group (p<0.05), regardless of age. The distance between iliac crests increased with age (p<0.05) in symptomatic and asymptomatic individuals. It was also found that the mean femoral neck-shaft angle was 130.6° (SD=0.59) and progression of the varus angulation occurred with age in both groups, with a significance level of 5%. CONCLUSIONS: The PTI was higher in patients with GTPS. The femoral neck-shaft angle does not differ between individuals with and without GTPS; however, it does decrease with age. The pelvic width tends to increase with aging in symptomatic or asymptomatic individuals; therefore, the increase in the pelvic width and decrease in the femoral neck-shaft angle can be interpreted as normal in aging women, which could alter the biomechanics of the hips and pelvis.

Relationship of the Pelvic-Trochanteric Index with greater trochanteric pain syndrome

OBJECTIVES: This study aimed to correlate a higher Pelvic-Trochanteric Index (PTI) with an increased varus of the femoral neck with greater trochanteric pain syndrome (GTPS). The secondary objective was to check whether the pelvic width changes with age. METHODS: A prospective study was conducted to compare female patients diagnosed with GTPS (case group) with asymptomatic female participants (control group) from March 2011 to June 2017. On an anteroposterior pelvic radiograph, lines were drawn by two radiologists, and the PTI (ratio of the distance between the greater trochanters and distance between the iliac crests) was defined and the femoral neck-shaft angle was measured. RESULTS: Data collected based on radiographs of 182 female patients (cases) and 150 female participants (controls) showed that the mean PTI was 1.09 (SD=0.01) in the case group and 1.07 (SD=0.01) in the control group (p<0.05), regardless of age. The distance between iliac crests increased with age (p<0.05) in symptomatic and asymptomatic individuals. It was also found that the mean femoral neck-shaft angle was 130.6° (SD=0.59) and progression of the varus angulation occurred with age in both groups, with a significance level of 5%. CONCLUSIONS: The PTI was higher in patients with GTPS. The femoral neck-shaft angle does not differ between individuals with and without GTPS; however, it does decrease with age. The pelvic width tends to increase with aging in symptomatic or asymptomatic individuals; therefore, the increase in the pelvic width and decrease in the femoral neck-shaft angle can be interpreted as normal in aging women, which could alter the biomechanics of the hips and pelvis.

Validation of a new classification system for interprosthetic femoral fractures.

Interprosthetic femoral fracture (IFF) incidence is gradually increasing as the population is progressively ageing. However, treatment remains challenging due to several contributing factors, such as poor bone quality, patient comorbidities, small interprosthetic fragment, and prostheses instability. An effective and specific classification system is essential to optimize treatment management, therefore diminishing complication rates. This study aims to validate a previously described classification system for interprosthetic femoral fractures.

Proposal for a new clinical test for diagnosing lateral hip snapping

Lateral hip snapping is a nosological entity that is often unknown to many orthopedists and even to some hip surgery specialists. It comprises palpable and/or audible snapping on the lateral face of the hip that is sometimes painful, caused by muscle-tendon friction on the greater trochanter during flexion and extension of the coxofemoral joint. In the following, we describe a new test for diagnosing lateral hip snapping, which is eminently clinical...

O ressalto lateral do quadril é uma entidade nosológica muitas vezes desconhecida pela maioria dos ortopedistas e até mesmo por alguns especialistas em cirurgia do quadril. Trata--se da presença de um estalido palpável e/ou audível na face lateral do quadril, por vezes doloroso, causado pelo atrito musculotendineo sobre o grande trocanter durante a flexão e a extensão da articulação coxofemoral. Descreveremos a seguir um novo teste para o diagnóstico do ressalto lateral do quadril, que é eminentemente clínico...

Fasciíte necrosante pós-osteossíntese de fratura transtrocantérica do fêmur / Necrotizing fasciitis after internal fixation of fracture of femoral trochanteric

A fasciíte necrosante é uma rara e potencialmente letal infecção de partes moles. A seguir, descreveremos o caso de uma paciente portadora de fratura transtrocantérica do fêmur que evoluiu com fasciíte necrosante após a osteossíntese da fratura. Uma revisão da literatura acerca do tema será abordada.

Necrotizing fasciitis is a rare and potentially lethal soft tissue infection. We report a case of trochanteric femur fracture in a patient who underwent fracture fixation and developed necrotizing fasciitis. A literature review on the topic will be addressed.

Necrotizing fasciitis after internal fixation of fracture of femoral trochanteric.

Necrotizing fasciitis is a rare and potentially lethal soft tissue infection. We report a case of trochanteric femur fracture in a patient who underwent fracture fixation and developed necrotizing fasciitis. A literature review on the topic will be addressed.

A fasciíte necrosante é uma rara e potencialmente letal infecção de partes moles. A seguir, descreveremos o caso de uma paciente portadora de fratura transtrocantérica do fêmur que evoluiu com fasciíte necrosante após a osteossíntese da fratura. Uma revisão da literatura acerca do tema será abordada.

Proposal for a new clinical test for diagnosing lateral hip snapping.

Lateral hip snapping is a nosological entity that is often unknown to many orthopedists and even to some hip surgery specialists. It comprises palpable and/or audible snapping on the lateral face of the hip that is sometimes painful, caused by muscle-tendon friction on the greater trochanter during flexion and extension of the coxofemoral joint. In the following, we describe a new test for diagnosing lateral hip snapping, which is eminently clinical.

O ressalto lateral do quadril é uma entidade nosológica muitas vezes desconhecida pela maioria dos ortopedistas e até mesmo por alguns especialistas em cirurgia do quadril. Trata-se da presença de um estalido palpável e/ou audível na face lateral do quadril, por vezes doloroso, causado pelo atrito musculotendíneo sobre o grande trocanter durante a flexão e a extensão da articulação coxofemoral. Descreveremos a seguir um novo teste para o diagnóstico do ressalto lateral do quadril, que é eminentemente clínico.

Radiographic anatomy of the proximal femur: correlation with the occurrence of fractures.

OBJECTIVE: To evaluate the correlation between radiographic parameters of the proximal femur anatomy and fractures. METHODS: Three hundred and five digital x-rays of the pelvis were analyzed in the anteroposterior view. Of these x-rays, twenty-seven showed femoral neck or transtrochanteric fractures. The anatomical parameters analyzed were: femoral neck width (FNW), femoral neck length (FNL), femoral axis length (FAL), cervicodiaphyseal angle (CDA), acetabular tear-drop distance (ATD) and great trochanter-pubic symphysis distance (GTPSD). The analysis was performed by comparing the results of the x-rays with and without proximal femoral fracture, to establish a correlation between them. RESULTS: No differences were found between the anatomical parameters of the groups with and without proximal femoral fracture. CONCLUSION: There was no association between anatomical changes in the proximal femur and greater susceptibility to fractures. Level of evidence IV, Cross-sectional Study.

Anatomia radiográfica da região proximal do fêmur: correlação com a ocorrência de fraturas / Radiographic anatomy of the proximal femur: correlation with the occurrence of fractures

OBJETIVO: Avaliar se existe correlação entre parâmetros radiográficos da anatomia da região proximal do fêmur e a ocorrência de fraturas. MÉTODOS: Trezentas e cinco radiografias digitais da bacia foram analisadas na incidência ântero-posterior. Destas radiografias, vinte e sete apresentavam fratura do colo femoral ou transtrocantérica. Os parâmetros anatômicos analisados foram: Largura do colo femoral (LCF), comprimento do colo femoral (CCF), comprimento do eixo femoral (CEF), ângulo cérvico-diafisário (ACD), distância entre as lágrimas acetabulares (DLA) e a distância grande trocânter- sínfise púbica (DGTSP).Foram analisadas, comparativamente, as radiografias com e sem fratura da região proximal do fêmur, para verificar se existem parâmetros radiográficos que estão associados com maior probabilidade de ocorrência de fratura do colo femoral ou transtrocantérica. RESULTADOS: Não foi encontrada diferença entre os parâmetros anatômicos dos grupos com e sem fratura na região proximal do fêmur. CONCLUSÃO: Não foi encontrada nenhuma associação entre alterações anatômicas na região proximal do fêmur e maior susceptibilidade à ocorrência de fraturas. Nível de evidência IV, Estudo Transversal.

OBJECTIVE: To evaluate the correlation between radiographic parameters of the proximal femur anatomy and fractures. METHODS: Three hundred and five digital x-rays of the pelvis were analyzed in the anteroposterior view. Of these x-rays, twenty-seven showed femoral neck or transtrochanteric fractures. The anatomical parameters analyzed were: femoral neck width (FNW), femoral neck length (FNL), femoral axis length (FAL), cervicodiaphyseal angle (CDA), acetabular tear-drop distance (ATD) and great trochanter-pubic symphysis distance (GTPSD). The analysis was performed by comparing the results of the x-rays with and without proximal femoral fracture, to establish a correlation between them. RESULTS: No differences were found between the anatomical parameters of the groups with and without proximal femoral fracture. CONCLUSION: There was no association between anatomical changes in the proximal femur and greater susceptibility to fractures. Level of evidence IV, Cross-sectional Study.

Failure of fixation of trochanteric femur fractures: Clinical recommendations for avoiding Z-effect and reverse Z-effect type complications.

BACKGROUND: Z-effect and reverse Z-effect are complications that arise from the surgical treatment of pertrochanteric fractures of the femur with proximal femoral nails (PFN) comprising two interlocking head screws. Such complications are induced by the migration of screws in opposite directions, which may lead to failure of the osteosynthesis. FINDINGS: The paper describes three cases of pertrochanteric fractures that were treated with PFN with two interlocking screws that evolved to either Z-effect or reverse Z-effect. Literature-based explanations for this phenomenon are provided together with recommendations of how to avoid such complications. CONCLUSIONS: Although intramedullary fixation is an established method of treatment of femoral intertrochanteric and subtrochanteric fractures, the evolution of the procedure may include complications associated with the migration of the interlocking head screws. The occurrence of Z-effect and reverse Z-effect has not been completely elucidated, but the main causes of such complications are probably fracture fixation in varus position, severe medial comminution, inappropriate entry point of the nail and poor bone quality.

Fratura diafisária do fêmur: reprodutibilidade das classificações AO-ASIF e Winquist / Femoral shaft fracture: reproducibility of AO-ASIF and Winquist classifications

OBJETIVO: Avaliar a reprodutibilidade interobservadores das classificações AO/ASIF e de Winquist para as fraturas diafisárias do fêmur no adulto. MÉTODOS: foram selecionadas aleatoriamente 50 radiografias de pacientes adultos portadores de fratura diafisária do fêmur nas incidências em antero-posterior e perfil. As radiografias foram analisadas por 5 observadores, sendo um membro da Sociedade Brasileira de Trauma Ortopédico, um radiologista, um residente do terceiro ano de Ortopedia e Traumatologia, um do segundo e um do primeiro. Para avaliar a concordância interobservadores destas classificações, foi utilizado o índice estatístico Kappa (K). RESULTADOS: Em todas as análises, observou-se um coeficiente de concordância entre observadores estatisticamente significativo (valor p < 0,05) e classificado como bom (valores de 0,61 a 0,80) ou muito bom (valores acima de 0,80), segundo os critérios de Landis e Koch. CONCLUSÃO: As classificações AO e Winquist apresentam alto índice de concordância interobservadores para as fraturas diafisárias do fêmur no adulto.

OBJECTIVE: To evaluate inter-observer reproducibility of AO / ASIF and Winquist-Hansen classifications for shaft fractures of the femur in adults. METHODS: 50 anterior-posterior and profilelateral radiographs were randomly selected, of adult patients awith diaphyseal fracture of the femur. The radiographs were analyzed by 5 observers-a member of the Brazilian Society of Orthopedic Trauma, a radiologist and 3 residents. To assess the concordance between these classifications, we used the statistical index Kappa (K). RESULTS: In all analyses, we observed a statistically significant correlation coefficient between observers (p <0.05) and according to the criteria of Landis and Koch, they were ranked them as good (values of 0.61 to 0.80) or very good (values above 0.80). CONCLUSION: The AO rating and Winquist present a high rate of concordance between observers for shaft fractures of the femur in adults.