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Orthopaedic Proceedings
Vol. 92-B, Issue SUPP_II | Pages 335 - 336
1 May 2010
Pareja-Esteban J Fernandez-Camacho F Pizones-Arce F Sanchez-Sanchez J Civantos-Benito J Vaquerizo-Garcia V Viloria-Recio F Monreal-Redondo D Collantes-Casanova A
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Introduction: The study of appearance and development of the different ossification nuclei of the skeleton in the diverse segments of the locomotor apparatus is relevant for fields of medicine, such as Human Anatomy, Paediatry, Endocrinology, Forensic Medicine, Traumatology and Orthopaedic Surgery, among others.

A number of studies show significant differences regarding their results due to the heterogeneity of methods and scientific and geographic fields originating each series.

The present study is intended to show the age of appearance and complete fusion of the different ossification nuclei of the first radio of the foot in a present Mediterranean sample of children and its relation with several morphometric and clinical parameters.

Material and Methods: We report a retrospective study where 971 x-ray dorso-plantar images from 225 patients were analysed.

A descriptive and qualitative assessment allowed us to determine the existence or lack of each ossification nucleus of the first radio of the foot. Risser’s scale, adapted by us, was applied in the following way: 0, lack; I, rudimentary nucleus; II, well formed nucleus; III, partial fusion to diaphysis; IV, complete fusion.

Likewise, a statistical analysis was performed relating the ages of appearance and fusion of each nucleus with the forefoot morphology (digital and metatarsal formulae) and the main pathologies motivating the x-ray examination (traumatism, our control group; flatfoot; hallux valgus; clubfoot).

Results: Data about the age of appearance and fusion of each nucleus of the first radio of the foot were quantified.

As a general rule, the age of appearance of each nucleus was earlier in girls. A delay in the age of appearance of the proximal metatarsal epiphysis in clubfoot patients (3.33 years) was observed in comparison with the control group (1.96 years).

In general, there was no relation between sex and the fusion (partial and total) of each nucleus of the first radio of the foot. The exception was the age of appearance of the distal metatarsal epiphysis (when this incostant nucleus was present), earlier in boys (9.49 years) than girls (11.21 years).

A delay in the age of fusion of the proximal and distal metatarsal epiphyses and the proximal phalanx epiphysis was observed in hallux valgus patients.

In patients with egyptian foot, there seems to be a delay in the age of fusion of the distal metatarsal and distal phalanx epiphyses.

Conclusions: The different ages of appearance and partial and total fusion of each ossification secondary nucleus of the first radio of the foot are detailed in the present comunication. A delay in the age of fusion of the secondary nucleus of the first radio of the foot would contribute to determine significantly forefoot morphology (egyptian formula) and even its pathology (hallux valgus).