"Patients usually present with motion- or position-related hip and/or groin pain, e.g., a painful restriction of range of motion during hip flexion, internal rotation, and adduction. Sometimes the pain is also described in the buttock, back, or thigh, and there may also be symptoms of stiffness, clicking, locking, or catching 2."
"chondral lesions: e.g. carpet lesion, chondral wear and/or defects"
Expected headings
"Associations"
"Subtypes"
"MR/CT arthrography"
"Complications"
"Patients usually present with motion- or position-related hip and/or groin pain, e.g., a painful restriction of range of motion during hip flexion, internal rotation, and adduction. Sometimes the pain is also described in the buttock, back, or thigh, and there may also be symptoms of stiffness, clicking, locking, or catching 2."
"In addition, several lateral hip projections, including Dunn 45° and 90° views, Meyer lateral, frog-leg lateral, Lequesne's false profile, and cross-table lateral have been described to assess the hip in a second plane, with the following signs 7,10:"
"In addition to morphological assessments of the femoral head-neck junction and the acetabulum, and measurements of acetabular retroversion, alpha angle and femoral head-neck offset, MRI allows for assessment of concomitant labral and chondral injuries like chondrolabral separation or carpet lesion and/or features indicative of the latter, e.g. paralabral cysts 1-5,12,13."
"Direct MR arthrography can improve the detection of chondral injuries, such as carpet lesions, and can add sensitivity for the detection of labral injury, e.g. tears or chondrolabral separation 1,3,12,14-16. Both 3D gradient-echo and spin-echo sequences have been described with good diagnostic accuracy 16. It seems that CT arthrography is most accurate in detecting labral tears 17."
"The aetiology of cam and pincer morphology comprises primary (idiopathic) and secondary (developmental, traumatic and iatrogenic) causes 3."
"pincer type: if acetabular bone overgrowth or labral overhang is present (typically at the anterosuperior quadrant of the acetabulum), labral degeneration may occur secondary to impingement of the femoral neck; this may result in a concomitant contrecoup cartilaginous injury and chondrosis in the posteroinferior acetabulum, as the femoral head is levered into an abnormal anatomic position 1,23"
"different publications support different values (e.g. >55 in anterior and >60° in anterosuperior position); different thresholds optimise for sensitivity vs specificity 2,14,26"