Hip surgery

Causes

There are various reasons why hip pain might occur. Typical causes are accidents, wear and tear, a congenital deformity, a trapped nerve or an infection.

Here is a selection of the potential causes:

• broken bone, e.g. femoral neck fracture
• traumatic hip dislocation (accidental dislocation of the hip joint)
• arthritis of the hip (inflammation of the hip joint caused by bacteria [septic coxitis, infection], rheumatism [rheumatoid arthritis] or by an inflammatory flare-up [reactive osteoarthritis])
• hip dysplasia (congenital misalignment of the hip)
• advanced coxarthrosis (arthritis in the hip joint)
• hip impingement (painful blockage of the hip joint caused by bone spurs). This is referred to as ‘pincer impingement’ when it occur on the socket and ‘cam impingement’ on the femoral neck. The bony deformity on the acetabulum and/or femoral head impairs the mobility of the hip joint (flexion in particular) and causes pain.)
• labral tear (tear of the important ring of cartilage that seals the rim of the hip joint)
• bursitis (inflammation of the bursa), e.g. trochanteric bursitis (bursitis of the greater trochanter)
• periarthropathia coxae (wear-related disease of the tendon attachment of the stabilising hip muscles on the greater trochanter)
• coxa saltans, also known as ‘snapping hip’ (caused by a tight tendon [tractus iliotibialis], which gets caught on the greater trochanter when the hip is flexed, causing a jerky, snapping motion.)
• meralgia paraesthetica (compression of the sensitive lateral femoral cutaneous nerve beneath the inguinal ligament: Those affected suffer from abnormal sensations [paraesthesia] as well as burning pain and sensory disturbances on the front or outer side of the thigh.)
• Osteonecrosis of the femoral head (death of the bone tissue on the femoral head: This can occur without a recognisable trigger [idiopathic] or as a result of cortisone tablets or injections, alcohol abuse, metabolic disorders or arterial occlusive disease.)
• perthes disease (necrosis of the femoral head, occurring in childhood)
• juvenile femoral head release (epiphyseolysis capitis femoris: slipping of the femoral head along the growth plate during puberty.)

Treatments

Hip pain can be treated conservatively (without surgery) or surgically.

Conservative therapies

• Ultrasound, shock wave therapy, massage, muscle training, etc.
• Anti-inflammatory drugs and lubricants
• Injections of hyaluronic acid or cortisone into or around the hip joint (e.g. for bursitis)
• Drugs designed to support the cartilage, or appropriate dietary supplements for the joint

Surgical treatment

• Fixation of fractures with plates, screws or nails
• Suture of tendon tears
• Removal of bursa and bone spurs
• Arthroscopy of the hip joint with suture or removal of the labrum (the cartilage around the hip socket) and removal of bone spurs in the case of hip impingement
• Artificial hip replacement: If the osteoarthritis has caused so much wear that the hip joint is destroyed, it can be replaced with an artificial hip joint.
• During the operation, the surgeon will decide whether to preserve the existing hip or to replace it with an artificial hip joint.