Isolated patella absentia is an extremely rare phenomenon, with only a few published cases and even fewer follow-up reports. Nearly 40 years after the initial presentation of 2 brothers with bilateral congenital absence of the patella and the publication of a case report, we report the clinical and radiographic findings of their subsequent tibiofemoral osteoarthritis, which was treated with bilateral total knee arthroplasty.
Understanding the biomechanical complications associated with congenital absence of the patella as it relates to a stable knee is vital; in the case of degenerative changes, total knee arthroplasty appears to provide a long-term solution for these patients.
1Department of Joint Preservation and Adult Reconstruction, Northwell Health, Lenox Hill Hospital, New York, NY
2Department of Orthopaedic Surgery, Northwell Health, Plainview Hospital, Plainview, New York
3Hartford Bone and Joint Institute, Hartford Hospital, Hartford, Connecticut
4Department of Orthopaedic Surgery, Northwell Health, Huntington Hospital, Huntington, New York
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