Adhesive Capsulitis of the Hip: Clinical Features, Diagnosis, and Management.

Commonly referred to as frozen shoulder, adhesive capsulitis is an extensively studied and well-documented condition in the glenohumeral joint. However, adhesive capsulitis of the hip (ACH) remains a clinical enigma with limited research and understanding. Characterized by pain and a significant restriction in the range of motion, ACH, severely impacts patient quality of life. The current literature on ACH is sparse, with few studies addressing its pathophysiology, clinical presentation, diagnosis, and treatment. This review aims to consolidate existing knowledge on ACH to provide a comprehensive overview, drawing parallels with adhesive capsulitis of the shoulder (ACS). We explore the similarities and differences in pathophysiology between ACH and ACS, review the clinical manifestations of ACH, and discuss the diagnostic challenges faced by clinicians. Furthermore, we evaluate current conservative and surgical treatment strategies and their outcomes, highlighting the noted limitations in the available evidence. By clarifying this poorly studied condition, we aim to stimulate further research and ultimately improve the diagnosis, management, and prognosis of patients suffering from ACH.