RESUMEN

OBJECTIVES: To evaluate the clinical and radiographic results and complications relating to patients undergoing arthroscopic treatment for femoroacetabular impingement by means of an extracapsular approach. METHODS: Between January 2011 and March 2012, 49 patients (50 hips) underwent arthroscopic treatment for femoroacetabular impingement, performed by the hip surgery team of the Orthopedic Hospital of Passo Fundo, Rio Grande do Sul. Forty patients (41 hips) fulfilled all the requirements for this study. The mean follow-up was 29.1 months. The patients were assessed clinically by means of the Harris Hip score, as modified by Byrd (MHHS), the Non-Arthritic Hip score (NAHS) and the internal rotation of the hip. Their hips were also evaluated radiographically, with measurement of the CE angle, dimensions of the joint space, alpha angle, neck-head index, degree of arthrosis and presence of heterotopic ossification of the hip. RESULTS: Out of the 41 hips treated, 31 (75.6%) presented good or excellent clinical results. There was a mean postoperative increase of 22.1 points for the MHHS, 21.5 for the NAHS and 16.4̊ for the internal rotation of the hip (p < 0.001). Regarding the radiographic evaluation, correction to normal values was observed for the alpha angle and neck-head index, with a mean postoperative decrease of 32.9̊ and mean increase of 0.10, respectively (p < 0.001). CONCLUSION: Arthroscopic treatment of femoroacetabular impingement by means of an extracapsular approach presented satisfactory clinical and radiographic results over a mean follow-up of 29.1 months, with few complications.

OBJETIVOS: Avaliar os resultados clínicos e radiográficos e as complicações relativos a pacientes submetidos a tratamento artroscópico de impacto femoroacetabular com o uso da abordagem extracapsular. MÉTODOS: Entre janeiro de 2011 e março de 2012, 49 pacientes (50 quadris) foram submetidos a tratamento artroscópico de impacto femoroacetabular pela Equipe de Cirurgia do Quadril do Hospital Ortopédico de Passo Fundo (RS). Preencheram todos os requisitos necessários para este trabalho 40 pacientes (41 quadris). O seguimento médio foi de 29,1 meses. Os pacientes foram avaliados pelo Harris Hip Score modificado por Byrd (MHHS), Non-Arthritic Hip Score (NAHS) e quanto à rotação interna do quadril. Também foram avaliados radiograficamente. Aferiu-se o ângulo CE, a dimensão do espaço articular, o ângulo alfa, o índice colo-cabeça, o grau de artrose e a presença de ossificação heterotópica do quadril. RESULTADOS: Dos 41 quadris tratados, 31 (75,6%) apresentaram resultados clínicos bons ou excelentes. Observou-se um aumento médio pós-operatório de 22,1 pontos para o MHHS, 21,5 para o NAHS e 16,4° na rotação interna do quadril (p < 0,001). Quanto à avaliação radiográfica, observou-se correção para índices considerados normais do ângulo alfa e índice colo-cabeça, com diminuição média de 32,9o e aumento médio pós-operatório de 0,10, respectivamente (p < 0,001). CONCLUSÃO: O tratamento artroscópico do impacto femoroacetabular com o uso da abordagem extracapsular apresentou resultados clínicos e radiográficos satisfatórios em seguimento médio de 29,1 meses, com poucas complicações.

RESUMEN

Among the options for femoral reconstruction in total hip arthroplasty (THA) revision procedures, in cases of extensive circumferential defects, is the use of proximal femoral allografts. This technique makes it possible to correct the hip abductor mechanism and the leg length discrepancy, as well as presenting osteoconductive potential. The authors report the clinical and radiographic results from two cases of THA revision using this technique, with a minimum follow-up of 20 years.

RESUMEN

OBJECTIVE: To evaluate the clinical and radiographic results from patients who underwent femoral reconstruction secondary to loosening of total hip arthroplasty, using circumferential proximal femoral allografts and cemented implants. METHODS: A retrospective study was conducted on 32 patients (33 hips) who underwent femoral reconstruction secondary to loosening of total hip arthroplasty, using circumferential proximal femoral allografts and cemented implants. Among these patients, 28 (29 hips) fulfilled all the requirements for this study. The mean follow-up was five years and two months. The clinical evaluation was done in accordance with the Harris Hip Score. Radiographically, the patients were assessed regarding reabsorption and consolidation of the allograft, migration of the greater trochanter, stability of the femoral component and heterotypic calcification. RESULTS: The average preoperative Harris Hip Score was 32 points. At the last postoperative follow-up, the average score was 82 points. Allograft resorption of some degree was seen in nine hips (31%). Regarding consolidation, 24 cases (82.8%) showed full consolidation, three (10.3%) showed partial consolidation and two (6.9%) showed pseudarthrosis. All femoral components were stable. According to the criteria established, 27 cases (93.1%) were considered to be successful reconstructions after a mean follow-up of five years and two months. CONCLUSION: From the results obtained, it was concluded that use of circumferential proximal femoral allografts in selected cases of femoral reconstruction secondary to loosening of arthroplasty presented a high survival rate from the reconstruction over an average follow-up of five years and two months.