BACKGROUND: This is a cohort trial (1997-2005) of 49 patients submitted to an acetabular component revision of a total hip arthroplasty, using impacted human and bovine freeze-dried cancellous bone grafts (H&FDBG) and a reinforcement device. OBJECTIVE: To compare clinical/radiographic graft incorporation capability between cancellous bone grafts. PATIENTS/METHODS: There were two groups: I (n=26) receiving human grafts and II (n=25) receiving bovine grafts. The average follow-up times were 55 and 49 months, respectively. Clinical analysis was based on the Merle d'Aubigné and Postel score, and the radiographic analysis involved an established score based on Conn's et al. criteria for radiographic bone incorporation. RESULTS: No clinical/radiographic differences were found between the groups and both showed an overall rate of 88.5% and 76% of graft incorporation (p=0.424). CONCLUSION: The results presented here are comparable to those in the literature with the use of deep-FG. Therefore, cancellous bone grafts can be safely and adequately used in acetabular component revision in total hip arthroplasty.

Uma coorte de 48 pacientes (54 quadris) submetidos a artroplastia total primária de quadril não-cimentada com prótese de Spotorno®. O objetivo do estudo foi avaliar o desfecho clínico-radiológico da prótese de Spotorno®,em um período de 20 anos (1985 a 2005), com seguimento médio de 17,5 anos (8-20anos). Na avaliação clínica e funcional foram obtidos 92,7% de bons resultados. Encontrou-se osteopenia em 24 acetábulos (44,4%) e 30 fêmures (55,6%). O desgaste do polietileno esteve presente em 43 acetábulos (79,6%), com média de dois milímetros (0-5mm). A análise estatística dos resultados sugeriu que a presença de osteopenias não está relacionada ao desfecho clínico (p=0,75); o desgaste do polietileno, bem como a presença de osteopenia, foi mais pronunciado nos pacientes abaixo de 55 anos (p<0,05). Concluímos que a utilização da prótese de Spotorno® nessa coorte apresentou bons resultados, semelhantes aos relatos prévios da literatura.

The objective of the study was to assess clinical-X-ray endpoint on a cohort of 48 patients (54 hips) submitted to Spotorno® primary non-cemented total hip arthroplasty in the last 20 years (1985 - 2005), with mean follow-up time of 17.5 years (range: 8-20 years). In the clinical and functional evaluation, 92.7% good outcomes were achieved. Osteopenia was found in 24 acetabula (44.4%) and 30 femurs (55.6%); A mean of 2 millimeters (0-5 mm) of polyethylene wear-off was present in 43 acetabula (79.6%). The statistical analysis of the results suggested that the presence of osteopenia is not associated to the clinical endpoint (p=0.75); polyethylene wear-off as well as the presence of osteopenia was more significant if patients below the age of 55 years (p<0.05). We concluded that the use of a Spotorno® prosthesis on this cohort showed god outcomes, similar to those previously reported in literature.