Acta Orthop Traumato
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Acta Orthop Traumato · Jan 2013
Review Case ReportsAlkaptonuric patient presenting with "black" disc: a case report.
Although intervertebral disc degeneration usually occurs in the natural course of alkaptonuria, detection of the disease by black disc material in a patient without any other sign of alkaptonuria is an extremely rare condition. The authors report a 45-year-old previously healthy female patient who was operated on for prolapsed lumbar disc herniation, and in whom the nucleus pulposus was discovered to be black intraoperatively. The alkaptonuria was diagnosed after histopathological examination of the black disc material. Elevated urinary concentration of homogentisic acid confirmed the diagnosis.
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Acta Orthop Traumato · Jan 2007
Review[Osteotomies in the treatment of osteochondral lesions of the knee joint].
Excellent results of total knee arthroplasty have outweighed high tibial osteotomy applications in the treatment of osteoarthritis of the knee joint, but there is a growing interest in osteotomies as an adjunct in the treatment of full-thickness chondral and osteochondral lesions of the knee. Abnormal biomechanics in both tibiofemoral and patellofemoral articulations resulting from instability and malalignment should be corrected and osteotomy should be regarded as the first step in the treatment of these lesions. ⋯ Clinical, radiographic, and experimental studies have shown beneficial effects of osteotomies on cartilage regeneration. The aim of the osteotomy is simple: cartilage needs proper biomechanical environment for healing.