M24.65 Ankylosis, hip

Name of the Condition

• Ankylosis, hip

Summary

Ankylosis of the hip is a condition characterized by abnormal stiffness or immobility of the hip joint due to abnormal adhesion or fusion of joint structures. It can limit range of motion and affect daily activities that require hip movement, such as walking or sitting.

Causes

Common causes include trauma or injury to the hip, chronic inflammatory conditions such as arthritis, prolonged immobility after surgery or injury, and connective tissue disorders. In some cases, the cause may be idiopathic (unknown).

Risk Factors

Risk factors include age (more common in older adults), a history of hip injuries, chronic arthritis, and conditions requiring prolonged immobilization, such as a cast or sling. Repetitive strain on the hip through occupation or activities may also increase risk.

Symptoms

Symptoms typically include hip stiffness, pain, limited movement, and sometimes visible swelling or deformity around the hip area. Pain may worsen with attempted motion or weight-bearing.

Diagnosis

Diagnosis may involve a physical examination, patient history assessment, and imaging tests such as X-rays or MRIs to evaluate joint structure and rule out other conditions. Range of motion tests may also be performed to assess mobility.

Treatment Options

Treatment may include physical therapy to improve mobility, medications for pain and inflammation, and in severe cases, surgical intervention to restore joint function.

Prognosis and Follow-Up

Prognosis depends on the underlying cause and severity of the ankylosis. Early intervention and adherence to treatment plans can improve outcomes. Regular follow-up with a healthcare provider is important to monitor progress and adjust treatment as needed.

Complications

Complications may include persistent pain, reduced mobility, difficulty with daily activities, and increased risk of falls. In severe cases, ankylosis may lead to permanent disability.

Lifestyle & Prevention

Maintaining a healthy weight, avoiding repetitive high-impact activities, and promptly treating hip injuries or inflammatory conditions may help reduce risk. Physical therapy exercises can also help preserve joint mobility.

When to Seek Professional Help

Seek medical attention if you experience persistent hip pain, stiffness, or difficulty moving, especially after an injury or if symptoms worsen over time.

Tips for Medical Coders

Document the specific joint affected (hip) and any underlying causes or contributing factors. Ensure clinical documentation supports the diagnosis of ankylosis and its impact on mobility for accurate coding.