2008, Number 6
Acta Ortop Mex 2008; 22 (6)
Order of appearance of ossification centers in the elbow of Mexican children between 6 months and 12 years old
Procell VCR, Cassis ZN, Juárez RCS, Cárdenas TMB
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ABSTRACTIntroduction: Existing data of the order of appearance of ossification centers is from Anglo-Saxon literature. This literature describes the following order of appearance of the ossification centers of the distal humerus as follows: lateral condyle appears before one year of age, but it might delay up to 18-24 months; medial epicondyle between 5 to 6 years of age; the medal condyle between 9 to 10 years of age; the lateral epicondyle is the last one to ossify, between 10 to 12 years of age. Proximal radius ossifies between 3.8 and 4.5 years; olecranon at 6 to 8 years of age. Methods: We studied 240 elbows and classified them in 6 groups according to the age of appearance of ossification centers. Anteroposterior and lateral radiographs were taken, and analyzed. Results: We found a delay in the manifestation of the olecranon and the medial epicondyle. In base of our clinical observations, the ossification centers present later in Mexican children.