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General Orthopaedics

Painful Hip Osteoarthritis and Knee Contracture Due to Multifocal Melorheostosis Treated by Total Hip Arthroplasty and Total Knee Athroplasty

International Society for Technology in Arthroplasty (ISTA) 2012 Annual Congress



Abstract

Melorheostosis is a very rare mesenchymal dysplasia of bone, characterized by sclerosing hyper-pigmentation appearances on the bone, may involve the adjacent soft tissues and lead to joint pain, limitation of joint motion and stiffness as a result of abnormal ossifications and soft tissue contractures, due to periarticular fibrosis. It is well known to tend to affect only one limb, but multifocal involvement, such as multiple limbs, spine and rib, has been extremely rarely reported. A variety of treatment options have been tried so far, none being specific surgical treatments.

Here we present a case of a 43-year-old man who sustained melorheostosis with multifocal involvement including the axial skeleton and a whole entire lower limb. He had painful swelling of his left lower limb and mainly complained of difficulty walking due to severe hip pain and knee stiffness, which persisted for 20 years and was aggravated during the last 5 years. Total hip arthropasty [Fig. 1] was done first, and then total knee arthroplasty [Fig. 2, 3] was performed. During operation, there were difficulties in bone cutting and implant insertion due to mixed pattern of hard sclerotic portion and osteoporotic portion despite complete synovectomy and sufficient soft tissue release. He was eventually free of pain during walking and able to walk without a crutch and joint motion of hip and knee was substantially improved after surgery.

We found that hip pain and contracture due to osteoarthritis and knee contracture secondary to multifocal melorheostosis could be successfully treated by total hip and knee arthroplasty. To the best of our knowledge, this is the first reporting the total joint arthroplasty performed in the patients with multifocal melorheostosis.