The bipartite patella is a developmental osseous variant that is found in approximately 2% to 6% of the population, and is bilateral in 50%. The proposed etiologies include old nonunion, osteochondritis, and congenital growth defect. It is often found incidentally around the inferior pole, lateral margin, or superolateral border of the patella. It is usually asymptomatic, but may be related to anterior knee pain. However, separation of the bipartite patella is rare, with 9 cases reported in the literature. The symptomatic snapping knee syndrome may be caused by multiple intra-articular and extra-articular pathology including discoid meniscus, tumors, iliotibial band, popliteus, gracilis, semitendinosus, or biceps femoris tendon. However, no reports exist on separated bipartite patella as the feasible cause of the snapping knee syndrome in the orthopedic literature. This article presents a case of snapping knee syndrome due to separated bipartite patella. The accessory bone was removed by arthroscopy, which has rarely been described in the literature.
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J Child Orthop
December 2024
Department of Orthopaedics, Children's Hospital Boston, Boston, MA, USA.
Purpose: The purpose of this study is to develop an evidence-based algorithm for the management of symptomatic bipartite patella in the pediatric and adolescent population based on a systemic review of the published literature.
Methods: A systematic review of the literature was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines on PubMed and Embase, selecting for studies discussing the management of symptomatic bipartite patella.
Results: Five studies met criteria, involving 315 knees (314 patients, average age 15.
J Orthop Case Rep
December 2024
Department of Orthopedics and Traumatology, School of Medicine, Koç University Hospital, Istanbul, Turkey.
Introduction: Bipartite bone formation is a congenital variation occurring due to the incomplete ossification of newly forming bones in the body. The patella and sesamoid bones are the most common bipartite bone sites. However, some unusual bones can also have this kind of variation and it is important to diagnose them correctly and avoid unnecessary overtreatment.
View Article and Find Full Text PDFAm J Sports Med
October 2024
Department of General Practice, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands.
Am J Sports Med
October 2024
Department of Orthopaedics and Sports Medicine, Erasmus Medical Center, Rotterdam, the Netherlands.
Int J Surg Case Rep
January 2024
South Egypt Cancer Institute, Assiut University, Egypt.
Introduction: A bipartite patella is a rare anatomical variant of the patella. A patella bipartite is often asymptomatic and is often an incidental finding on radiological imaging. The patella remains bipartite when secondary ossification centers fail to fuse.
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