Diagnosis and Management of Patellar Tendinopathy

Introduction to Patellar Tendinopathy

Enthesophyte formation at the distal patellar tendon insertion indicates chronic patellar tendinopathy, a degenerative overuse condition that requires conservative management with eccentric strengthening exercises, activity modification, and relative rest as first-line treatment, as recommended by the American Academy of Family Physicians 1, 2, 3

Pain location is typically at the inferior pole of the patella with tenderness at the tendon insertion, according to the American Academy of Family Physicians 3
Pain pattern is usually activity-related anterior knee pain that worsens with jumping, stairs, or prolonged sitting, as noted by the American Academy of Family Physicians 3
Physical exam reveals pain with resisted leg extension when the leg is fully extended, as indicated by the American Academy of Family Physicians 3
The decline squat test reproduces the patient's pain by loading the patellar tendon, as reported by the American Academy of Family Physicians 3

Eccentric strengthening exercises are the gold standard and most effective treatment, achieving full recovery in approximately 80% of patients within 3-6 months, according to the American Academy of Family Physicians 4
Eccentric exercises stimulate collagen production and guide normal alignment of newly formed collagen fibers, as recommended by the American Academy of Family Physicians 2, 4
Activity modification involves reducing or eliminating pain-provoking activities, but continuing activities that don't worsen symptoms to prevent muscular atrophy, as suggested by the American Academy of Family Physicians 2, 4
Relative rest is recommended to avoid complete immobilization, which causes deconditioning, as advised by the American Academy of Family Physicians 2
Stretching exercises are widely accepted as beneficial for improving flexibility, according to the American Academy of Family Physicians 2

Cryotherapy, such as applying ice through a wet towel for 10-minute periods, provides short-term pain relief, as recommended by the American Academy of Family Physicians 2, 4
NSAIDs, either oral or topical, can be used for short-term pain relief, although they don't alter long-term outcomes, as noted by the American Academy of Family Physicians 2, 4
Topical NSAIDs are preferred to eliminate the risk of gastrointestinal hemorrhage associated with systemic NSAIDs, as advised by the American Academy of Family Physicians 2

Ultrasonography is 94% specific for patellar tendinopathy, showing tendon thickening, decreased echogenicity, and calcification, as reported by the American Academy of Family Physicians 1, 2
MRI is 78% sensitive and 86% specific, useful for showing chronic degenerative changes and detailed knee anatomy, according to the American Academy of Family Physicians 1, 2