Total knee arthroplasty for osteoarthritis in hereditary onycho-osteodysplasia (nail-patella syndrome): a case report.

Onycho-osteodysplasia is an unusual disorder that affects bone, fingernails, and the kidneys. The knees may be involved with a hypoplastic, dislocated patella, and premature osteoarthritis with deformity may develop. The following is a case report of a patient with this disorder in which a total knee arthroplasty was performed.