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MINERVA ORTOPEDICA E TRAUMATOLOGICA
A Journal on Orthopedics and Traumatology
Minerva Ortopedica e Traumatologica 2001 April;52(2):67-72
Forage-biopsy in idiopathic osteonecrosis of the femoral head: medium and long term results
Ghione M., Lisai A., Nicodemo A., Maderni A., Massè A.
Background. Aim of this study is to evaluate the medium and long term results obtained with the forage biopsy in the treatment of idiopathic osteonecrosis of the femoral head in the preoperative stage I or II of Ficat.
Methods. A retrospective study has been carried out on 22 forage biopsies in 19 patients from 1972 to September 2000, at the first Department of Traumatology of the University of Turin. All patients were affected by idiopathic osteonecrosis of the femoral head confirmed by histopathologic examination performed on the bioptic fragment, while bilateral localization was present in 37% of the cases. The mean follow-up was 10 years. The clinical valuations have been carried out with Harris Hip Score.
Results. At follow-up 19 hips (16 patients), 18 in stage I and 1 in stage II, were classified as completely healed with a mean Harris Hip Score of 85/100. The excellent results were 10 (46%), good 7 (31.5%), fair 2 (9%), poor 3 (13.5%). Only in 3 hips, of which 2 in stage II, unsuccessful results were reported, and no postoperative fractures occurred.
Conclusions. The results suggest that idiopathic osteonecrosis can be successfully treated with forage biopsy. Even if this doesn't happen, this procedure doesn't compromise the following preservative or substitutive surgery.