Surgical management of a subtrochanteric fracture in a patient with 50-year longstanding intra-articular hip ankylosis and ischiofemoral synostosis: a case report

THA led to adequate fracture healing, relief of chronic lumbosacral pain and significant improvements in function, proving to be a promising solution for challenging complex hip cases, offering significant improvements in quality of life when combined with careful surgical technique, thorough planning, and attentive postoperative care.