S42.146 Nondisplaced fracture of glenoid cavity of scapula, unspecified shoulder

Name of the Condition

• Nondisplaced fracture of glenoid cavity of scapula, unspecified shoulder

Summary

A nondisplaced fracture of the glenoid cavity of the scapula, unspecified shoulder, refers to a break in the socket portion of the shoulder blade that articulates with the humerus, where the bone fragments remain in their normal anatomical position. This condition involves damage to the glenoid, a shallow, concave structure critical for shoulder joint stability, and may affect mobility and function. Nondisplacement indicates the fracture fragments have not shifted, which can influence treatment and recovery.

Causes

Traumatic injury is the primary cause of glenoid cavity fractures. Common mechanisms include falls onto an outstretched arm, direct blows to the shoulder, or high-impact events such as motor vehicle accidents. Sports-related collisions or forceful impacts during physical activities may also result in this type of fracture.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or other bone-weakening conditions.
• Advanced age, which may increase susceptibility to fractures from minor trauma.
• Previous shoulder injuries that affect bone integrity.

Symptoms

• Pain in the shoulder or upper back, especially with movement.
• Swelling, bruising, or tenderness over the shoulder joint.
• Limited range of motion in the shoulder.
• Difficulty lifting or rotating the arm.
• In severe cases, joint instability or visible deformity.

Diagnosis

Diagnosis begins with a clinical evaluation, including a physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays or CT scans, are typically used to confirm the fracture and determine if it is nondisplaced. These tests help visualize the bone structure and rule out other injuries.

Treatment Options

Treatment depends on the severity and stability of the fracture. Nondisplaced fractures often heal with conservative management, including immobilization with a sling, pain management, and physical therapy to restore strength and mobility. Severe cases may require surgical intervention to ensure proper alignment and joint stability.

Prognosis and Follow-Up

The prognosis for a nondisplaced glenoid fracture is generally favorable, with most patients recovering full function over time. Follow-up care typically involves regular monitoring to assess healing and rehabilitation progress. Physical therapy is often recommended to prevent stiffness and improve shoulder mobility.

Complications

Potential complications include chronic pain, limited range of motion, or post-traumatic arthritis. In rare cases, improper healing or displacement may require additional treatment. Early intervention and adherence to rehabilitation can reduce these risks.

Lifestyle & Prevention

• Use protective gear during high-risk activities, such as sports or manual labor.
• Maintain bone health through a balanced diet rich in calcium and vitamin D.
• Avoid falls by using assistive devices if needed, especially in older adults.
• Engage in regular exercise to strengthen shoulder muscles and improve balance.

When to Seek Professional Help

Seek medical attention if you experience severe shoulder pain, swelling, or difficulty moving the arm after an injury. Immediate care is necessary if there is visible deformity, numbness, or signs of infection, such as fever or increased redness.

Tips for Medical Coders

When coding for S42.146, ensure documentation specifies the fracture is nondisplaced and affects the glenoid cavity of the scapula, with the shoulder side unspecified. Verify that the injury is clearly described as a fracture (not a dislocation or other condition) and that no additional details (e.g., laterality) are implied. Accurate clinical documentation is essential to support the code assignment.