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Shoulder

Cartilage Defects

Cartilage defects of the shoulder are injuries or degenerative changes to the smooth, protective cartilage that lines the surfaces of the bones in the shoulder joint. Damage to this cartilage can lead to pain, stiffness, swelling, and reduced function. Cartilage does not heal easily because it lacks a direct blood supply, and without treatment, defects can progress over time and lead to arthritis.

Cartilage injuries may result from trauma, repetitive use, dislocation, or degeneration. Treatment options range from conservative management to advanced surgical procedures depending on the size, location, and severity of the defect, as well as the patient’s age, activity level, and symptoms.

Cartilage defects most commonly occur on the humeral head or glenoid surface, disrupting the smooth, gliding joint surface and leading to mechanical symptoms and inflammation.

The shoulder is a ball-and-socket joint made up of the following:Humerus (upper arm bone): The “ball” portion of the joint.

  • Glenoid (part of the scapula or shoulder blade): The “socket” of the joint.
  • Articular cartilage: A smooth, white tissue that covers the ends of bones in the joint. It allows for nearly frictionless movement.
  • Labrum: A ring of cartilage around the glenoid that helps stabilize the joint.
  • Joint capsule and ligaments: Provide support and control movement.

Cartilage injuries in the shoulder can present with various symptoms, depending on the severity and whether other structures (like the labrum or rotator cuff) are also involved.

Pain is often poorly localized but may worsen with activity or after prolonged use. If left untreated, cartilage damage can lead to progressive joint degeneration and early arthritis.

Common symptoms include:

  • Deep, aching pain in the shoulder
  • Pain during activity, especially overhead motions or lifting
  • Swelling or a feeling of fullness in the joint
  • Catching, clicking, or grinding sensations
  • Stiffness or reduced range of motion
  • Shoulder weakness or fatigue
  • Locking or instability in some cases

Cartilage defects can be caused by several different mechanisms, including:

Acute Trauma

  • A fall, shoulder dislocation, or direct impact can injure the cartilage surface.
  • May be associated with labral or ligament injuries.

Repetitive Overuse

  • Repeated stress from sports (such as baseball, tennis, swimming) or manual labor can lead to cartilage wear and tear.

Degeneration

  • Age-related cartilage thinning or osteoarthritis can cause defects

Avascular Necrosis (AVN)

  • A condition where bone underneath the cartilage loses blood supply and collapses, damaging the overlying cartilage.

Previous Surgery or Injury

  • Prior shoulder instability, rotator cuff tears, or surgical procedures can increase the risk of cartilage wear.

Risk Factors

  • Shoulder instability or previous dislocations
  • Participation in overhead or contact sports
  • Family history of joint degeneration
  • Obesity or poor biomechanics

A thorough diagnosis includes:

Physical Examination

  • Evaluation of range of motion, strength, joint stability, and localized tenderness.
  • Special maneuvers may reproduce pain or mechanical symptoms.

Imaging Studies

  • X-rays: Can detect bone abnormalities, narrowing of the joint space, or bone spurs.
  • MRI: The most useful tool for identifying cartilage defects, joint fluid, labral injuries, and bone damage.
  • CT scan: Occasionally used for detailed evaluation of the bone and joint surface.
  • Arthroscopy: A minimally invasive procedure used for diagnosis and treatment; allows direct visualization of cartilage damage.

Many patients with mild to moderate cartilage defects can be managed without surger. Conservative treatment may relieve symptoms in early-stage cartilage damage, but larger defects or persistent symptoms may require surgical intervention.Nonoperative options include:

Activity Modification

  • Avoid activities that aggravate pain, especially overhead or high-impact movements.

Physical Therapy

  • Focuses on:
    • Improving shoulder mobility and strength
    • Optimizing scapular (shoulder blade) control
    • Improving posture and biomechanics
  • Helps reduce stress on the damaged cartilage.

Anti-inflammatory Medications

  • NSAIDs (e.g., ibuprofen, naproxen) may reduce pain and inflammation.

Corticosteroid Injections

  • Can provide temporary relief of inflammation, especially if there is joint swelling.
  • Can be repeated based on patient goals, function and response to prior injections.

Platelet-Rich Plasma (PRP) or Stem Cell Injections

  • Regenerative therapies that may promote healing and reduce inflammation by stimulating the bodies natural healing mechanisms
  • Evidence is still evolving for usage in the shoulder but could be used as a non-surgical option

Surgical intervention is typically recommended for:

  • Large or full-thickness cartilage defects
  • Failed conservative therapy
  • Younger, active patients with mechanical symptoms
  • Coexisting labral tears or instability

Arthroscopic Debridement and Chondroplasty

  • Smoothing and removing damaged cartilage fragments.
  • May provide temporary symptom relief but does not regenerate new cartilage.

Microfracture

  • Small holes are made in the bone beneath the cartilage defect to stimulate the growth of fibrocartilage.
  • Often used for small- to medium-sized defects in younger patients.
  • Fibrocartilage is not as durable as native cartilage, but can restore function for several years.

Osteochondral Autograft Transfer (OATS)

  • A plug of healthy cartilage and underlying bone is taken from a non-weight-bearing part of the joint and implanted in the defect.
  • Best for small, well-contained lesions.

Osteochondral Allograft Transplant

  • Similar to OATS, but uses donor tissue from a cadaver.
  • Suitable for larger cartilage defects.

Autologous Chondrocyte Implantation (ACI)

  • A two-stage procedure where cartilage cells are harvested, grown in a lab, and then implanted back into the defect.
  • More common in the knee, but may be used in select shoulder cases.

Shoulder Replacement (Arthroplasty)

  • In severe or advanced cartilage loss (i.e., shoulder arthritis), partial or total shoulder replacement may be considered.
  • Options include hemiarthroplasty (replacing the humeral head only) or total shoulder arthroplasty (replacing both joint surfaces).

Nonoperative Recovery

  • With consistent therapy and activity modification, many patients experience improved function and pain control.
  • Results depend on the extent of the damage and the patient’s activity level.

Post-Surgical Recovery

  • Most cartilage procedures are done arthroscopically as outpatient surgery.
  • Recovery varies by procedure:
    • Microfracture: Limited weight or load-bearing for 6–8 weeks, with gradual rehabilitation over 3–6 months.
    • OATS/Allograft/ACI: Longer recovery, with bracing and physical therapy extending up to 6–12 months.
  • Physical therapy is critical to restoring motion, strength, and shoulder mechanics.

Outcomes

  • Many patients report pain relief and improved function, especially with small- to medium-sized defects.
  • Long-term durability depends on the size of the lesion, surgical technique, and patient adherence to rehab.
  • Larger defects or advanced degeneration may eventually require joint replacement.

  • Avoid repetitive overhead activity or heavy lifting without proper form.
  • Strengthen shoulder and scapular muscles to support joint function.
  • Use proper sports or work techniques to reduce strain.
  • Warm up and stretch before physical activity.
  • Treat shoulder injuries early to avoid progression to cartilage damage.

See a healthcare provider if you experience:

  • Persistent shoulder pain not improving with rest
  • Stiffness or clicking during motion
  • Swelling or weakness
  • History of trauma or dislocation with ongoing symptoms

Cartilage defects of the shoulder involve damage to the smooth joint surface, leading to pain, stiffness, and mechanical symptoms. While early defects may respond to rest, activity modifications and therapy, advanced or symptomatic lesions may need surgical management. Options range from minimally invasive debridement to cartilage restoration procedures and, in severe cases, joint replacement. Early diagnosis and individualized treatment can help preserve shoulder function and reduce long-term complications.

At a Glance

Dr. Hasani Swindell

  • Fellowship-Trained Sports Medicine Specialist
  • Board-Certified Orthopedic Surgeon
  • Summa Cum Laude Graduate from the University of Pittsburgh
  • Medical Degree from Columbia University
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