Study finds, Bikini incision increases the incidence of late
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One of the most common complications of direct anterior approach (DAA) hip arthroplasty is damage to the lateral femoral cutaneous nerve (LFCN). The use of a bikini incision is thought to raise the risk of this complication.

After including 99 Bikini and 96 longitudinal incision DAA cases, a prospective randomized study was performed. Before and after surgery, ultrasound was used to check for the presence of LFCN. Continuous clinical follow-up for 6 months was used to assess the rehabilitation of injury symptoms, and the patients were treated with mecobalamin and/or celecoxib. After surgery, the LFCN's sensory conduction velocity (SCV) and sensory action potential (SAP) amplitude were assessed in symptomatic patients.

Results:
--85, 67, and 43 cases of LFCN were of the anterior trunk, posterior trunk, and fan types, respectively, before surgery.

--All 195 patients completed the follow-up period. 57 patients had symptoms of LFCN injury, including 36 and 21 patients in the Bikini group and longitudinal group, respectively, with significantly different incidence rates.

--Of these, 32, 13, and 12 cases were of the anterior trunk, posterior trunk, and fan types, respectively.

--SCV and SAP amplitude significantly decreased after surgery in both groups . 17 cases showed reduction of symptoms within three months.

--46 cases showed self-recovery within six months, and 11 cases showed ceaseless symptoms at the final follow-up.

Finally, Bikini incision DAA hip arthroplasty can increase the risk of LFCN injury, with the anterior trunk distribution form being the most vulnerable.

Source: https://www.sciencedirect.com/science/article/abs/pii/S0883540321004848?dgcid=rss_sd_all
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