Simultaneous patellar fracture and patellar tendon avulsion following arthroscopic anterior cruciate ligament reconstruction: a case report and literature review.

Arthroscopic reconstruction of the anterior cruciate ligament (ACL) using the middle third of the patellar tendon is an effective method for treating ACL insufficiency. Donor site morbidities are usually mild. This article presents a case of simultaneous patellar fracture and patellar tendon avulsion that occurred 8 weeks after this operation. Such a case has rarely been reported. Theoretically, an accelerated rehabilitation protocol after ACL reconstruction may increase patellar stress and the potential for patellar fracture. However, it is still very important because complications such as arthrofibrosis, muscle atrophy, and patellofemoral pain may outweigh the chance of patellar fracture if adequate rehabilitation is not performed.