Why does rest not fix my jumper's knee?

Patellar tendonitis is mostly tendon degeneration rather than active inflammation. The tendon needs progressive, controlled loading to heal, so rest feels better briefly but the pain returns with activity. A structured eccentric and heavy-slow loading program is the treatment with the best track record.

For tendons that are not healing despite a good loading program, PRP is an option Dr. Lee discusses. The loading program remains the foundation, with PRP considered as an adjunct in stubborn cases rather than a substitute for the exercise work.

Patellar Tendonitis (Jumper's Knee), Steven J. Lee, MD

Q: Will I need surgery?

For the large majority, no. Patellar tendonitis improves with a loading program and load management, though it takes months. Surgery, which addresses the degenerated portion of the tendon, is reserved for the small minority whose pain persists after a sustained, committed effort at non-surgical care.

Patellar tendonitis is irritation and wear of the patellar tendon, which connects the kneecap to the shinbone. It is common in athletes who jump and change direction, basketball, volleyball, and similar sports, which is why it is nicknamed jumper's knee.

Despite the name 'itis,' it is more a degenerative, failed-healing tendon than active inflammation, which is why rest alone often is not enough and a structured loading program works better. It can be stubborn, but the large majority improve without surgery.

Symptoms

Typical complaints include:

Pain in the tendon just below the kneecap
Pain with jumping, landing, squatting, and stairs
Stiffness and pain at the start of activity
Tenderness directly over the tendon

How it is diagnosed

It is largely a clinical diagnosis based on tenderness over the patellar tendon and pain reproduced by loading the knee. Ultrasound or MRI is used to assess the tendon when the picture is unclear or recovery stalls.

Dr. Lee's approach

Patellar tendonitis is treated patiently and conservatively. Dr. Lee emphasizes a structured loading program, especially eccentric and heavy-slow resistance exercise, along with load management and activity modification, the measures with the best track record for tendons.

For tendons that stall, PRP is an option Dr. Lee discusses. Surgery, which addresses the degenerated portion of the tendon, is reserved for the small minority with pain that persists after months of committed non-surgical work.

Non-surgical treatment

The foundation of treatment is loading the tendon, not resting it:

A structured eccentric and heavy-slow resistance program
Load and training-volume management
Activity modification during flares
PRP as an option for tendons that are not healing

When conservative care stalls

Surgery, which removes the degenerated portion of the tendon and stimulates healing, is reserved for the small minority whose pain persists after an extended, genuine trial of a loading program.

Recovery timeline

Recovery is measured in months, not days:

Weeks 0 to 12
A structured loading program with load management. Improvement is gradual.
Months 3 to 6
Progressive return to jumping and sport as the tendon tolerates load.
After surgery (rare)
Protected loading early, then a graded program over several months.

What patients commonly misunderstand

What the evidence actually shows:

Rest alone usually is not enough. Because patellar tendonitis is mostly tendon degeneration, the tendon needs progressive loading to heal. Complete rest tends to feel better briefly, then the pain returns with activity.
It takes patience. Tendons heal slowly. A loading program works, but over months rather than days, which is the part athletes find hardest.

This page is general educational content authored by Dr. Lee. It is not a substitute for individual medical advice. Every patient's case is different, book a consultation to discuss yours.

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Patellar Tendonitis: jumper's knee, treated with patience.