Ochronosis is a musculoskeletal manifestation of alkaptonuria, a rare hereditary metabolic disorder occurs due to the absence of homogentisic acid oxidase and leading to various systemic abnormalities related to deposition of homogentisic acid pigmentation (ochronotic pigmentation). The present case reports the clinical features, radiographic findings, treatments and results of a cervical spond...

Hydroquinone and other cutaneous depigmenting agents are widely used by dermatologists to treat pigmentary disorders. On 29 August 2006, the US Food and Drug Administration (FDA) published a monograph in the US Federal Register proposing to ban all hydroquinone products that have not been approved via a New Drug Application process. Reports in the scientific literature on the occurrence of exog...

Horky D.: Submicroscopic Structure of the Human Joint Cartilage and Synovial Membrane in Ochronosis. Acta vet. Bmo,.50, 1981: 131-156. Using a transmission electron .lInd Sc8nning electron microscope the joint cartilage and synovial membrane were studied in 5 persons of the age from 30 to 55 years. In its majority the superficial cartilage layer is absent due to arthritic changes caused by the ...

THE literature apparently contains only four pathological examinations of the eye in hereditary ochronosis, and all of very recent date. The first two were carried out on biopsy material (Seitz, 1954; Rodenhiiuser, 1957) and the other two on the whole eye (Rones, 1960; Allen, O'Malley, and Straatsma, 1961). An ochronotic eye enucleated because of a mistaken diagnosis of malignant melanoma was e...