BACKGROUND CONTEXT Proximal congenital radial-ulnar synostosis (PCRUS) is defined by the development before birth of a bony bridge between the radius and ulna, usually at the proximal level, which blocks forearm rotation. This anomaly is rarely reported in the medical literature, because of its low prevalence, and treatment usually yields unsatisfactory results. The most commonly used surgical ...

This study was aimed to examine the correlation between skeletal maturation status and parameters from the odontoid process/body of the second vertebra and the bodies of third and fourth cervical vertebrae and simultaneously build multiple regression models to be able to estimate skeletal maturation status in Korean girls. Hand-wrist radiographs and cone beam computed tomography (CBCT) images w...

The sutures of the skulls of vertebrates are generally open early in life and slowly close as maturity is attained. The assumption that all vertebrates follow this pattern of progressive sutural closure has been used to assess maturity in the fossil remains of non-avian dinosaurs. Here, we test this assumption in two members of the Extant Phylogenetic Bracket of the Dinosauria, the emu, Dromaiu...

PURPOSE The cartilaginous parts of the first rib are usually articulating with sternal manubrium via a synchondrosis. With advancing age, there is progressive calcification of the rib cartilage. Pseudarthrosis of this calcified cartilage have been described in a study on anatomic specimen, but there are no systematically studies examining the anatomy of the cartilaginous parts of the first rib ...

Since Stephen Hales (1769) demonstrated that the distance separating holes pierced through the leg and shin bone of a half-grown chick did not increase despite the increase in length of the whole leg, subsequent investigators, including Hunter (1837), Dubreuil (1913), Haas (1926), Payton (1932) and Lacroix (1949), have established that the epiphysial cartilage is the main site of growth in leng...

Anomalous muscular variants of pectoralis major have been reported on several occasions in the medical literature. Among them, chondroepitrochlearis is one of the rarest. Therefore, this study aims to provide a comprehensive description of its anatomy and subsequent clinical significance, along with its phylogenetic importance in pectoral muscle evolution with regard to primate posture. The aut...

The tissue-separating capacity of chondral structures has been debated for more than 30 years, and one aspect that has particularly been questioned is whether the secondary cartilage of the mandibular condyle is comparable to primary growth cartilage, e.g. the epiphyseal growth plate. The present report summarizes information gained by using a specific interosseal transplantation method. These ...