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  • Title: Incidence and treatment of abductor deficiency during total hip arthroplasty using the posterior approach: repair with direct suture technique and gluteus maximus flap transfer.
    Author: Whiteside LA, Roy ME.
    Journal: Bone Joint J; 2019 Jun; 101-B(6_Supple_B):116-122. PubMed ID: 31146555.
    Abstract:
    AIMS: The aims of this study were to assess the exposure and preservation of the abductor mechanism during primary total hip arthroplasty (THA) using the posterior approach, and to evaluate gluteus maximus transfer to restore abductor function of chronically avulsed gluteus medius and minimus. PATIENTS AND METHODS: A total of 519 patients (525 hips) underwent primary THA using the posterior approach, between 2009 and 2013. The patients were reviewed preoperatively and at two and five years postoperatively. Three patients had mild acute laceration of the gluteus medius caused by retraction. A total of 54 patients had mild chronic damage to the tendon (not caused by exposure), which was repaired with sutures through drill holes in the greater trochanter. A total of 41 patients had severe damage with major avulsion of the gluteus medius and minimus muscles, which was repaired with sutures through bone and a gluteus maximus flap transfer to the greater trochanter. RESULTS: Abductor strength was maintained in the normal hips, but lateral hip pain progressed significantly, five years postoperatively (p < 0.0001). In the 54 patients with mild abductor tendon damage treated with simple repair, lateral hip pain also increased significantly during follow-up (p = 0.002). In the 35 patients with severe avulsion but good muscle repaired using a gluteus maximus flap transfer, abductor function was restored. The six patients with complete avulsion and poor muscle did not regain strong abductor power, but lateral hip pain decreased. CONCLUSION: The posterior approach offered excellent exposure and preservation of the abductor mechanism during primary THA. Augmentation of the repair with a gluteus maximus flap provided stable reconstruction of the abductor muscles and seemed to restore function in the hips with functioning muscles. Cite this article: Bone Joint J 2019;101-B(6 Supple B):116-122.
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