Osgood-Schlatters Syndrome (Pediatric)

Introduction

Osgood-Schlatter and Sindig-Larsen-Johannsen syndromes are pains that occur in the front of the knee in the active, growing child.  Osgood-Schlatter syndrome occurs at the end of the patellar tendon on the tibia bone while Sindig-Larsen-Johannsen syndrome occurs on the other side of the patellar tendon, at the bottom of the patella (knee cap).  They are both the result of overuse (too much running and/or jumping) that are generically termed apophysites.  An apophysis is a cartilage growth center that is the origin/insertion of a muscle's tendon, in this case the quadriceps.  In the growing child, the apophysis is a relative "weak link" during excessive muscle contracture.  

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