What is pincer impingement?

What is pincer impingement?

Pincer impingement involves excessive coverage of the femoral head by the acetabulum. With hip flexion motion, the neck of the femur bone “bumps” or impinges on the rim of the deep socket. This results in cartilage and labral damage.

What causes pincer impingement?

The Pincer form of the impingement is typically the results of retroversion, where the socket is pointed backwards a bit (rather than the usual situation where it is angled forwards), or where the socket is too deep. Very often, the Cam and Pincer forms exist together.

What does a positive Fadir test mean?

Positive if maneuver induces pain. Causes of positive test. Hip Impingement (femoral acetabular impingement) Hip Labral Tear. Hip loose bodies.

Does FAI need surgery?

Surgery for FAI can be performed using hip arthroscopy or open surgery. In hip arthroscopy, the hip is distracted and an arthroscope (a videocamera about the size of a pen) is used to look in the joint to see and treat damage that is found using two to five incisions that are about ¼ inch in size.

Where is a pincer lesion located?

The most serious damage caused by pincer FAI occurs at the level of the acetabular cartilage at its junction with the labrum (Fig. 1). The cartilage lesion is localized in the area where the contact occurs, which is usually the anterosuperior portion of the acetabulum.

What is a pincer lesion?

Pincer Impingement refers to an excessively deep acetabular socket, restraining normal hip range of motion. Pincer impingement in turn may be divided general into two types: global and focal.

What does FAI pain feel like?

FAI usually feels like a sharp pain deep in the groin area or in the front of the hip. It worsens with athletic activities, or with prolonged sitting. As symptoms progress, the muscles surrounding the hip will fatigue and become very sore.

What is Faber and Fadir?

E.g. FABER of the right hip: R. Knee flexion, abduction and external rotation of the R. leg until the R. ankle rests on top of (i.e. is proximal to) the opposite (or contralateral) knee. FADIR: Flex the hip to 90 degrees, ADduct (move towards and over the central line), Internally Rotate.

Is FAI surgery painful?

After surgical dislocation of the hip for the treatment of FAI, we have found it is not uncommon for patients to continue to complain about groin pain similar to the pain that was present before surgery. Occasionally it radiates towards the knee.

What is FAI pain?

Hip impingement, or femoroacetabular impingement (FAI), occurs when the femoral head (ball of the hip) pinches up against the acetabulum (cup of the hip). When this happens, damage to the labrum (cartilage that surrounds the acetabulum) can occur, causing hip stiffness and pain, and can lead to arthritis.

What is a pincer type deformity?

Pincer morphology refers to an abnormality of the acetabulum or rather an acetabular overcoverage of the femoral head, which may be focal or global, and is one of the causes of femoroacetabular impingement.