What Causes Patellar Tendinosis?
Patellar tendinosis is caused by repetitive mechanical loading of the tendon that exceeds its ability to adapt. Contributing factors include sudden increases in training intensity or volume, reduced quadriceps strength, poor load tolerance, altered lower-limb biomechanics, and inadequate recovery between activities.
It is particularly common in sports involving jumping or rapid changes in direction but can also affect non-athletes with repetitive knee loading. Pain is often worse during or after activity and may initially settle with rest, only to return when loading resumes. Identifying and modifying these factors is key to effective management.