Patellar Tendonitis 726.64

synonyms:Jumper's Knee, patellar tendonosis, patellar tendinopathy

Patellar Tendonitis ICD-9

• 726.64 (Patellar tendinitis)

Patellar Tendonitis Etiology / Epidemiology / Natural History

• Believed to related to repeated loading of the knee extensor mechanism.
• Pathology shows hypercellularity, neovascularization and an absence of inflammatory cells. Related to recurrent microtrauma.
• Generally associated with jumping sports; basketball,

Patellar Tendonitis Anatomy

Patellar Tendonitis Clinical Evaluation

• Activity related anterior knee pain with focal patellar-tendon tenderness. Marked tenderness in the insertion of the infrapatellar tendon at the inferior pole of the patella.
• Associated with jumping sports, basketball, volleyball.

Patellar Tendonitis Xray / Diagnositc Tests

• A/P and Lateralviews of the knee generally normal.
• MRI: reveals inflammatory changes in the patellar tendon.

Patellar Tendonitis Classification / Treatment

• Activity modification, stretching, infrapatellar straps, ice, NSAIDs, stretching, strengthening, extracorporeal shock wave therapy (Peers KH, Clin J Sport Med 2003;13:79).
• Platelet-rich plasma injection. (Kon E, Injury 2009; 40:598)
• Surgical treatment: Consider debridement and repair for severe tendinopathy in chronic cases which have failed to respond to non-operative treatment. (Shelbourne KD, AJSM 2006;34:1141).

Patellar Tendonitis Associated Injuries / Differential Diagnosis

• Patellar tendon rupture
• Chondromalacia patella / Patellofemoral pain
• Prepatellar Bursitis

Patellar Tendonitis Complications

Patellar Tendonitis Follow-up Care

Patellar Tendonitis Review References

• Warden SJ, Clin in Sports Med 2003;22
• Shelbourne KD, AJSM 2006;34:1141
• Al-Duri ZA, Am J Knee Surg 2001;14:43
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