Lunate Dislocation: Causes, Symptoms & Treatment

by Administrator 21. August 2014 08:37

Lunate dislocation is a wrist injury that involves displacement of a small bone called the carpal bone in the wrist. The bone dislocates from its normal position and may occur due to falling from a height or an accident.

Causes

Some of the main causes of Lunate dislocation include

  • Trauma to the wrist due to falling on an outstretched hand
  • Severe wrist sprain
  • A malformed joint called congenital abnormality is more susceptible to dislocation
  • Sports that involve stress on wrist and hand
  • Repeated injury
  • Poor strength and flexibility of wrist

Symptoms

Major symptoms of Lunate dislocation are

  • Pain
  • Numbness
  • Tingling of fingers
  • Inflammation in the wrist and hand
  • Limited movement of the wrist and hand

Diagnosis

Regular X-ray is helpful in determining Lunate dislocation however it is not possible to get clear x-rays if the injuries are severe. The orthopedic doctor can also recommend a CT scan or MRI for the diagnosis of the condition.

Treatment

It is important to treat the Lunate dislocation as soon as possible. The patient should immediately consult a wrist and hand surgeon, who will evaluate the damage and the extent of the injury. The surgeon can use non-surgical or surgical methods to realign the Lunate bone so that it is properly oriented. Orthopedic doctors try to reposition the bone non-surgically and to reduce pain and swelling the doctor often prescribes some non-steroidal anti-inflammatory medicines. They may also suggest hot and cold therapy to reduce pain and inflammation. In case the symptoms still persist and the patient experiences pain and inflammation in wrist, then surgery is required to offer relief to the patient. In some cases a minor surgery is required to stabilize the bone so that it can heal properly. Surgeons may use pins through the skin to hold the dislocated bone which are removed later on. After surgery, the patient may take up to six months to recover completely. Physician often recommend certain strengthening and stretching exercises to regain strength and motion of the wrist.

In case of accidents however, Lunate Dislocation can occur along with fracture and ligament tears. The dislocated bone may press on the nerve that passes through the joint and may cause Carpel Tunnel Syndrome. Thus, surgeons may have to carry out additional surgeries to treat fractures, broken ligaments and Carpel Tunnel Syndrome. It is advisable to seek prompt medical assistance as immediate treatment may eliminate the chances of wrist arthritis and instability of wrist joint, etc.

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