HIP LABRUM TEAR, CARTILAGE TEAR
WHAT IS THE HIP LABRUM?
The labrum is a structure on the acetabular (socket) rim. Imagine the socket as a margarita glass. The labrum would be the salt around the rim of the glass, but instead of the grains of salt, the labrum is a ring of fibrous tissue. The function of the labrum is not completely understood, but it does serve to protect the cartilage next to it and seal the joint. It has many nerve endings in it so if it becomes damaged, it can be a source of pain. In the setting of femoroacetabular impingement (FAI), the hip labrum see abnormal contact from the bony collision which can be a cause of labral tears.
WHAT IS HIP CARTILAGE?
Cartilage is the structure in our joints that gives us a smooth, low friction surface to walk on. It is found on both the femoral head and the acetabulum. The cartilage layers in our hips can tear with continued trauma from femoroacetabular impingement (FAI). Arthritis can be defined as the loss of cartilage in our joints. So as FAI continues, then the cartilage damage can progress effectively increasing the arthritis in the hip.
SYMPTOMS of labral tear and/or cartilage tear may include:
- Groin pain associated with hip activity
- Front, side, buttock pain location
- Pain can be dull, achy, or sharp and knife-like
- Mechanical symptoms may include locking, catching, giving way
- Pain often radiates to front or inner thigh but does not typically go below the knee
- Pain is worse with sitting, squatting, walking up or downhill
- Range of motion may decrease
DIAGNOSIS is made with a combination of:
- Patient history
- Physical exam
TREATMENT options include conservative (non-surgical) and surgical:
Conservative treatment options refer to management of the problem without surgery. Nonsurgical management of FAI will probably not change the underlying abnormal biomechanics of the hip causing the FAI but may offer pain relief and improved mobility.
- Activity modification and limitations
- Anti-inflammatory medication
- Physical therapy
- Injection of steroid
- Injection of biologics: platelet rich plasma or stem cell
Hip arthroscopy (minimally invasive surgery) is reasonable to consider if conservative treatments have failed. Surgery is designed to repair the labrum back to the acetabulum and address any cartilage damage. At the same time, any bony impingement is removed to help prevent recurrent tear. Occasionally, the labrum cannot be fixed or has failed prior surgical repair. In this situation, labral reconstruction (making a new labrum with other tissue) can be considered.