S43.035 Inferior dislocation of left humerus

Name of the Condition

• Inferior Dislocation of Left Humerus

Summary

This condition involves the complete displacement of the left humerus (upper arm bone) from the glenoid fossa of the scapula, with the humeral head moving downward (inferiorly). It typically results from trauma or injury and may cause pain, instability, or restricted movement in the shoulder joint.

Causes

The primary cause is trauma, such as a fall, direct blow to the shoulder, or forceful movement that exceeds the joint's normal range of motion. Sports injuries, motor vehicle accidents, or falls are common triggers. Repetitive overhead activities or underlying joint instability may also contribute.

Risk Factors

• Participation in contact sports or activities with high shoulder strain.
• Previous shoulder dislocations or subluxations.
• Age-related joint laxity or connective tissue disorders.
• Occupations requiring repetitive overhead movements.

Symptoms

• Intense shoulder pain, especially with movement.
• Visible deformity or abnormal shoulder contour.
• Swelling, bruising, or tenderness around the joint.
• Limited range of motion or inability to move the arm.
• Sensation of the shoulder "popping out" or feeling unstable.

Diagnosis

Diagnosis begins with a clinical examination to assess pain, deformity, and range of motion. Imaging studies like X-rays or CT scans may be used to confirm the dislocation and rule out associated fractures or soft tissue damage.

Treatment Options

Treatment typically involves closed reduction to realign the humerus, followed by immobilization with a sling or brace. Physical therapy is often recommended to restore strength and mobility. Severe cases or those with complications may require surgical intervention.

Prognosis and Follow-Up

Prognosis depends on the severity of the injury and adherence to treatment. Most patients recover with proper care, but some may experience residual stiffness or instability. Follow-up appointments are important to monitor healing and adjust rehabilitation plans as needed.

Complications

Potential complications include recurrent dislocation, nerve or blood vessel damage, chronic shoulder instability, or post-traumatic arthritis. Early intervention can reduce these risks.

Lifestyle & Prevention

Avoid high-risk activities or use protective gear during sports. Strengthen shoulder muscles through targeted exercises and maintain flexibility. If you have a history of shoulder issues, consult a healthcare provider before engaging in strenuous activities.

When to Seek Professional Help

Seek immediate medical attention if you experience severe shoulder pain, visible deformity, or inability to move the arm after an injury. Prompt care can prevent further damage and improve outcomes.

Tips for Medical Coders

Document the side (left), type (dislocation), and anatomical location (humerus) clearly. Ensure clinical notes support the diagnosis and specify any associated injuries or treatments. Use this code for inferior dislocations of the left humerus only; do not use for subluxations or other joint displacements.