How effective is strength training rehabilitation for patellar tendinitis?

Patellar tendinitis, also called patellar tendinopathy, affects the tendon below the kneecap and commonly hurts with jumping, landing, squatting, or stairs. Rehabilitation often starts with isometric quadriceps work or controlled movements, then advances to slower resistance exercises and activity-specific drills. The tendon needs a gradual training signal, not repeated sudden spikes in jumping or sprinting. Pain during exercise and stiffness the next morning help show whether the current load is appropriate, but a clinician should interpret symptoms alongside strength and movement quality.

A physiotherapist can assess hip and knee strength, landing mechanics, training volume, and the surface or footwear used for sport. Reduce aggravating jumps or deep repeated squats while maintaining suitable strengthening. Use controlled tempo, rest between harder sessions, and progress only when the knee responds well afterward. Return to running and jumping through planned stages rather than a sudden test. Read about [Patellar Tendinitis](/conditions/patellar-tendinitis/) and [Strength Training Rehabilitation](/treatments/physiotherapy-and-rehabilitation/strength-training-rehabilitation/).

Arrange an assessment if pain limits stairs, sitting-to-standing, work, or sport, or if it continues despite changing the load. Seek urgent care after a sudden pop, rapid swelling, inability to straighten the knee, or inability to bear weight, as these may indicate a more serious injury.

Ask which exercise stage fits your current symptoms, how much discomfort is acceptable, and when to increase resistance. Ask how hip strength, landing technique, footwear, and sport-specific jumping should be included in your return plan.