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Femoroacetabular impingement (FAI) is a condition involving one or more anatomical abnormalities of the hip joint, which is a ball and socket joint. [1] It is a common cause of hip pain and discomfort in young and middle-aged adults. [ 2 ]
Anatomical modifications of the femur and or hip socket cause a slow buildup of damage to the cartilage. Femur or acetabular dysplasia can lead to femoral acetabular impingement (FAI). Impingement occurs when the femoral head rubs abnormally or lacks a full range of motion in the acetabular socket. [7] There are three different forms of FAI.
The positive Drehmann sign is a typical clinical feature in slipped capital femoral epiphysis (SCFE), the impingement syndrome of the acetabulum-hip, or in osteoarthritis of the hip joint. [ 3 ] References
Plain radiography allows us to categorize the hip as normal or dysplastic or with impingement signs (pincer, cam, or a combination of both). Besides these, pathologic processes like osteoarthritis, inflammatory diseases, infection, or tumors can also be identified (Figure 1). [1] Figure 1.
Symptoms include pain during sports movements, particularly hip extension, and twisting and turning. This pain usually radiates to the adductor muscle region and even the testicles, although it is often difficult for the patient to pin-point the exact location. Following sporting activity the person with athletic pubalgia will be stiff and sore.
Although first described in the 1970s, since approximately 2000 the indications and numbers of hip arthroscopic procedures performed worldwide have expanded widely. This is due mainly to the identification of pathological conditions such as femoroacetabular impingement (FAI) and tears of the acetabular labrum. [citation needed]
Arthroscopy is commonly used for treatment of diseases of the shoulder including subacromial impingement, acromioclavicular osteoarthritis, rotator cuff tears, frozen shoulder (adhesive capsulitis), chronic tendonitis, removal of loose bodies and partial tears of the long biceps tendon, SLAP lesions and shoulder instability. The most common ...
An example of a perforated acetabulum on an ornithischian dinosaur. In reptiles and birds, the acetabula are deep sockets. Organisms in the dinosauria clade are defined by a perforate acetabulum, which can be thought of as a "hip-socket".