Items tagged “hip”

Femoral head-neck offset is a measurement for the characterization of hip morphology. Usage Femoral head-neck offset is used for quantitative characterization of the femoral head-neck junction, in particular in the setting of suspected femoroacetabular impingement for the detection of cam morp...

Femoral offset is a measurement for the characterization of hip morphology. Usage Femoral offset is used for quantitative characterization of hip morphology and is in particular used for preoperative planning of hip endoprosthesis. Restoring femoral offset is considered to be important for the...

Greater trochanteric-pelvic impingement also known as pelvitrochanteric impingement or trochanteric impingement is an extra-articular or external type of hip impingement 1,2. Epidemiology Greater trochanteric-pelvic impingement seems to be more common in younger people 2. Risk factors Perthe...

Chondrolabral separation refers to a form of chondrolabral injury, where the acetabular labrum is separated from the adjacent cartilage at the articular margin. Terminology Chondrolabral separation is referred to as a chondrolabral injury seen in the hip. It can also occur in the shoulder join...

Acetabular dysplasia is referred to as a shallow acetabulum, not being able to provide sufficient coverage for the femoral head and thus leading to instability of the hip joint. Terminology Acetabular dysplasia is a form of developmental dysplasia of the hip (DDH) often referred to in the adol...

Pelvic rotation is one of three parameters contributing to the pelvic orientation and defines the rotation of the pelvis within the axial plane. It is a potential source of measurement errors on the pelvis (AP view). Correspondingly pelvic rotation can lead to false-positive or negative radiogra...

The acetabular version angle or acetabular anteversion angle is a measurement used on cross-sectional imaging especially pelvic CT for the assessment of acetabular morphology. Usage The acetabular version angle is influenced by pelvic obliquity and pelvic tilt, which might lead to measurement ...

The femoral neck-shaft angle (NSA) or caput-collum-diaphyseal (CCD) angle is one of the most frequently applied measurements to assess hip morphology, in particular, the relation of the femoral shaft to the femoral head-neck axis. Usage The femoral head-neck-shaft angle is used in the diagnosi...

The acetabular sourcil is a radiographic feature seen on plain radiographs of the hip and pelvis as well as coronal CT reformats and MR images. Gross anatomy The acetabular sourcil refers to the roof or the weight-bearing area of the acetabulum and is characterized by increased sclerosis. It n...

Synovial folds or plicae of the hip are vestigial structures within the hip joint and include labral and ligamental plicae as well as the femoral retinacula. Gross anatomy The following synovial folds, plicae or retinacula have been described in the hip joint 1-5: femoral neck plicae or retin...

The AO/OTA classification is one of the most frequently used systems for classifying proximal femoral fractures or proximal femoral end segment fractures. Like other fractures, they are divided into three groups subject to the severity and complexity of the respective injury 1: type A: trochant...