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  • Title: Femoral-head vascularity after hip surface arthroplasty.
    Author: Kannan A, Bal CS, Kumar V, Mittal R, Damle N, Malhotra R.
    Journal: J Orthop Traumatol; 2010 Dec; 11(4):221-7. PubMed ID: 20957405.
    Abstract:
    BACKGROUND: iatrogenic devascularization of the femoral head is as an area of concern following hip resurfacing arthroplasty, with probable implications on short-term failure and long-term survival of the implant. MATERIALS AND METHODS: we assessed the vascularity of 25 resurfaced femoral heads in 20 patients by comparison with preoperative and postoperative Tc-99m methylene diphosphonate (MDP) bone scintigraphy images, the postoperative scans being done 9 months after the surgery. RESULTS: eight out of 25 hips (32%) showed <55% of their preoperative uptake at a mean of 9 months after surgery and were categorized as showing reduced vascularity. CONCLUSION: our study reveals reduction in vascularity of the femoral-head remnant as a frequent occurrence after hip resurfacing. Our study also highlights the role of bone scintigraphy as tool in assessing the vascularity of resurfaced femoral heads.
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