PubMed · 6459541
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S Teodori. 1981-12-15. [Coxarthrosis].. https://pubmed.ncbi.nlm.nih.gov/6459541/
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Osteoarthritis (OA), one of the most common age-related chronic disorders of articular cartilage, joints, and bone tissue, represents a major public health problem. Genetic studies have identified multiple gene variations associated with an increased risk of OA. These findings suggest that there is a large genetic component to OA and that the disorder belongs in the multigenetic, multifactorial class of genetic diseases. Studies of chondrodysplasias and associated hereditary OA have provided a better understanding of the role of structural genes in the maintenance and repair of articular cartilage, in the regulation of chondrocyte proliferation and gene expression, and in the pathogenesis of OA.
Many studies have been published on the development of the human elbow joint, but authors disagree on its morphogenetic timetable. Most discrepancies center on the cavitation of the elbow joint (including the humeroradial, humeroulnar, and superior radioulnar joints), and the organization of the tunnel of the ulnar nerve. We summarize our observations on the development of the elbow joint in 49 serially sectioned human embryonic (n = 28) and fetal (n = 21) upper limbs. During week 12, ossification begins in the epiphyses of the elements comprising the elbow joint. At the end of the embryonic period, the shallow groove between the posterior aspect of the medial epicondyle and the olecranon process, begins to be visible. The elbow joint cavity appears in O'Rahilly stage 21 (51 days) at the level of the humeroulnar and humeroradial interzones. Formation of the cavity begins at the medialmost portion of the humeroradial interzone and the lateralmost portion of the humeroulnar interzone. The annular ligament begins to develop in O'Rahilly stage 21 (51 days), and the superior radioulnar joint cavity appears between this ligament and the lateral aspect of the head of the radius during O'Rahilly stage 23 (56 days). We established the morphogenetic timetable of the human elbow joint.
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