4.5 Article

Comparison of retrograde anatomy iliac bone flap grafting versus anterograde anatomy iliac bone flap grafting for treatment of osteonecrosis of the femoral head

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BMC
DOI: 10.1186/s13018-023-03617-8

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Comparative study; Deep circumflex iliac artery; Iliac bone flap; Transplant; Osteonecrosis of the femoral head

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This study introduced a new operative technique for dissecting iliac bone flap with deep circumflex iliac artery based on analysis of its advantages. Compared with retrograde anatomy, anterograde anatomy showed significant differences in operating time, intraoperative blood loss, donor complication morbidity rate, donor-recipient delayed healing rate, iliac bone flap resection failure rate, lateral femoral cutaneous nerve injury rate, and ectopic ossification rate.
BackgroundIliac bone flap with deep circumflex iliac artery is a common option in the treatment of Osteonecrosis of the femoral head (ONFH), and dissection of iliac bone flap is the key step for successful operation. This paper aims to introduce a new operative technique for dissecting iliac bone flap with deep circumflex iliac artery based on analysis of its advantages.MethodsA total of 49 patients treated by retrograde anatomy and 52 patients treated by anterograde anatomy from January 2010 to December 2020 were recruited. The two groups were then compared in terms of the preoperative baseline conditions, intraoperative data, and postoperative Harris hip score (HHS).ResultsCompared with the retrograde anatomy group, the anterograde anatomy group had a significantly longer operating time, a significantly heavier intraoperative blood loss, a significantly higher rate of donor complication morbidity, a significantly higher rate of donor-recipient delayed healing, a significantly higher failure rate of iliac bone flap resection, a significantly higher rate of lateral femoral cutaneous nerve (LFCN) injury, and a significantly higher rate of ectopic ossification. No difference was found in postoperative HHS score between the two groups.ConclusionAs a new operative technique that can accurately locate the nutrient vessels of the iliac bone flap and quickly dissect the iliac bone flap with deep circumflex iliac artery while maintaining a comparable clinical effect, retrograde anatomy exhibited distinct advantages over anterograde anatomy in terms of simpler intraoperative operation, safer dissection, shorter operation time, lower blood loss, and fewer donor complications.

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