Anatomy, biomechanics and function of the hip capsule: A narrative review from a surgeons perspective.

Abstract

The hip capsule is a fibrous sleeve surrounding the hip joint, containing multiple specialized ligaments that are crucial for stabilizing both native hips and hips with prosthetic implants. However, the capsule's role in hip stability and biomechanics is often underappreciated, which can negatively impact surgical outcomes and implant longevity. This narrative review aims to summarize the current understanding of the hip capsule and offers insights to clinicians, researchers, and surgeons to more adequately manage associated clinical challenges. First, the detailed anatomy of the hip capsular ligaments is described. Next, the biomechanical properties and functional roles of these ligaments are discussed, highlighting the capsule's contributions to joint stability and kinematics. It is anticipated that this comprehensive overview will improve our understanding of the hip capsule and inform its optimal management in modern hip surgery.