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Success of varus osteotomy reliant on post-operative intact ratio
The post-operative intact ratio following varus osteotomy is vitally important when it comes to achieving a successful outcome for the procedure, it has been claimed.
According to new research published in the Journal of Bone and Joint Surgery, it is necessary for the ratio to be 33 per cent or higher - otherwise outcome will be unsatisfactory.
The researchers behind the new study, entitled Radiological Outcome Analysis of Transtrochanteric Curved Varus Osteotomy for Osteonecrosis of the Femoral Head, looked at 73 hips in 62 patients at a mean follow-up of 12.4 years and found that the cut-off point for postoperative intact ratio was 33.6 per cent.
Anything lower resulted in the progression of collapse.
"The cut-off point to prevent both the progression of collapse and joint-space narrowing was 41.9 per cent," the researchers noted.
Earlier research published in the journal found that osteonecrosis of the femoral head could benefit from the transplantation of bone-marrow derived mononuclear cells.
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