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The Journal of Bone and Joint Surgery (American) 84:1018-1021 (2002)
© 2002 The Journal of Bone and Joint Surgery, Inc.

Case Report

Patella Infera After Nonoperative Treatment of a Patellar Fracture

A Case Report

Saam Morshed, MD and Michael D. Ries, MD

Investigation performed at the University of California, San Francisco, School of Medicine, San Francisco, California

Saam Morshed, MD
University of California, San Francisco, School of Medicine, 102 Locksley Avenue, #206, San Francisco, CA 94122

Michael D. Ries, MD
Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Avenue (MU 320-W), San Francisco, CA 94143-0728. E-mail address: riesm@orthosurg.ucsf.edu

The authors did not receive grants or outside funding in support of their research or preparation of this manuscript. They did not receive payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.


   Introduction
 
Patella infera is a pathologic shortening of the patellar tendon, secondary to disease, trauma, or surgery, that can lead to knee pain and patellofemoral arthrosis. Caton et al. 1 coined the term patella infera in 1982 and found that the condition was frequently associated with chronic knee pain. In 1986, Wojtys et al. 2 presented radiographic and clinical findings for a group of patients in whom the condition developed following trauma or surgery about the knee joint. Patella infera has most commonly been reported as a complication of reconstruction of the anterior cruciate ligament 3-5 . Windsor et al. 6 , in a study of patients managed with total knee arthroplasty after a failed proximal tibial osteotomy, found that 80% of forty-one knees had patella infera after the osteotomy and before the arthroplasty. Osteotomy of the tibial tubercle and repairs of patellar tendon ruptures also have been associated with the condition 7 . Traumatic causes . . . [Full Text of this Article]


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Patella fracture treatment
Martin Altchek
JBJS Online, 19 Jun 2002 [Full text]