M76.5 Patellar tendinitis

Name of the Condition

Patellar Tendinitis

Summary

Patellar tendinitis is an inflammatory condition affecting the tendon connecting the kneecap (patella) to the shinbone (tibia). It commonly results from overuse or repetitive stress, often seen in athletes or individuals engaging in activities involving frequent jumping or knee extension.

Causes

The condition typically arises from repetitive stress or overuse of the knee joint, leading to microtears or inflammation in the patellar tendon. Sudden increases in physical activity intensity or improper biomechanics during movement can also contribute to its development.

Risk Factors

• Participation in sports requiring frequent jumping, such as basketball or volleyball.
• Tight leg muscles or muscular imbalances around the knee.
• Inadequate warm-up or improper training techniques.
• Being overweight, which increases stress on the knee joint.

Symptoms

• Pain and tenderness around the kneecap, especially during activity.
• Swelling or stiffness in the knee area.
• Pain that worsens with jumping, running, or kneeling.
• Weakness or reduced range of motion in the knee.

Diagnosis

Diagnosis is based on a physical examination to assess tenderness, swelling, and knee movement. Imaging tests like ultrasound or MRI may be used to evaluate tendon damage or rule out other conditions.

Treatment Options

• Rest and activity modification to allow healing.
• Ice application to reduce inflammation and pain.
• Physical therapy focusing on stretching and strengthening exercises.
• Nonsteroidal anti-inflammatory drugs (NSAIDs) for pain relief.
• In severe cases, corticosteroid injections or surgical intervention may be considered.

Prognosis and Follow-Up

Most cases improve with conservative treatment, though recovery may take several weeks to months. Follow-up care often includes gradual return to activity and ongoing physical therapy to prevent recurrence.

Complications

Untreated or severe cases may lead to chronic pain, tendon degeneration, or rupture. Persistent symptoms could also result in reduced mobility or functional impairment.

Lifestyle & Prevention

• Maintain proper form during physical activities.
• Incorporate regular stretching and strengthening exercises for the knee.
• Avoid sudden increases in activity intensity.
• Use appropriate footwear and equipment for sports.

When to Seek Professional Help

Seek medical attention if pain is severe, persistent, or worsening, or if there is noticeable swelling, instability, or inability to bear weight on the knee.

Tips for Medical Coders

Document the location (e.g., right/left knee) and any associated factors (e.g., sports-related injury) to support accurate coding. Ensure clinical notes specify the affected tendon and any contributing activities or biomechanical issues.