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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.
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 ...
In contrast, pincer impingement is a result of an abnormality on the acetabular side of the hip joint. [2] The acetabulum may either have a more posterior orientation than normal, otherwise known as acetabular retroversion (seen as the crossover sign on AP radiographs), or there may be extra bone around the rim.
The Drehmann sign describes a clinical test of examining orthopedic patients and is widely used in the functional check of the hip joint. It was first described by Gustav Drehmann (Breslau, 1869–1932). [1] The Drehmann sign is positive if an unavoidable passive external rotation of the hip occurs when performing a hip flexion.
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).
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.
X-ray of Femoral Osteotomy hardware to correct femoral rotation caused by hip dysplasia. X-ray of the right hip in female patient in early thirties. Two main types of osteotomies are used in the correction of hip dysplasias and deformities to improve alignment/interaction of acetabulum – (socket) – and femoral head – (ball), innominate osteotomies and femoral osteotomies.