Increased subchondral bone thickness in hips with cam-type femoroacetabular impingement

Subchondral Bone Properties Of Cam-type Femoroacetabular Impingement Deformities

Evaluation of the Sclerotic Subchondral Bone Boundary as a Surgical Resection Guide in the Treatment of Cam-type Femoroacetabular Impingement

INTRODUCTION: Improper resection depth in the surgical correction of cam-type femoroacetabular impingement (FAI) has been identified as the most common reason for revision hip arthroscopy [1]. Under-resection fails to address patient symptoms and results in the need for revision arthroscopy [1], while over-resection may lead to iatrogenic femoral neck fracture, loss of the normal joint suction ...

Correlation Between Cam-Type Femoroacetabular Impingement and Radiographic Osteitis Pubis.

A mechanistic link has been suggested between cam-type femoroacetabular impingement and increased stress on the symphysis pubis. This retrospective study was conducted to determine whether there is an increased prevalence of osteitis pubis, as evidenced by imaging, in patients with femoroacetabular impingement compared with age-matched control subjects. Search of a radiologic database of a larg...

Femoroacetabular impingement and classification of the cam deformity: the reference interval in normal hips

BACKGROUND AND PURPOSE Most patients with femoroacetabular impingement (FAI) have a cam deformity, which may be quantified by measuring the alpha angle and anterior offset ratio (AOR). Knowledge of what constitutes a "normal" alpha angle and AOR is limited. We defined the reference intervals of these measurements from normal hips in the general population. PATIENTS AND METHODS 157 individuals...

Statistical Shape Modeling of Cam-type Femoroacetabular Impingement

Cam femoroacetabular impingement (FAI) is characterized by a malformed femoral head that may cause shearing between the femur and acetabulum, leading to intraarticular damage and early hip osteoarthritis. Radiographic measurements are used to diagnose cam FAI, but provide only a planar view of the femoral head and often assume the ideal femur shape to be spherical. Statistical shape modeling (S...