PubMed · 8463701
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W B Greene. 1993. Infantile tibia vara.. https://pubmed.ncbi.nlm.nih.gov/8463701/
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Orthopaedic disorders in children differ in type from those in adults: most frequent are congenital anomalies and disorders of growth and development. The special nature and relative rarity of these conditions justify the separate development of this branch of the discipline. Fractures almost always heal normally after closed reduction and immobilization in a plaster cast; fractures close to epiphyseal discs and in joints require special attention. Slipping of the upper femoral epiphysis necessitates surgical fixation of the epiphysis. Benign bone tumours occur relatively often and mostly require no surgical intervention. The prognosis of solid malignant bone tumours has improved since the introduction of (neo)adjuvant chemotherapy and limb-sparing surgery. In case of difference in leg length, the length of both legs is predicted with the aid of roentgenological measurements. Inhibition of the growth of the longer leg gives rise to fewer complications than lengthening of the short leg. The essence of the treatment of growth disorders due to abnormal ossification of the cartilage is to monitor the natural repair process and to intervene if permanent malformation threatens.
Gracile bones are a frequent abnormality associated with fetal hypokinesia of any cause. With the exception of thin, undermineralized bones, the chondro-osseous structure is usually normal in these cases. We present a lethal skeletal dysplasia comprising minor anomalies, central nervous system abnormalities, gracile long bones, and abnormal chondro-osseous morphology. In addition to a short, disordered growth plate, the chondrocytes contained dilated loops of rough endoplasmic reticulum, suggesting an abnormality of an extracellular matrix protein. This protein appears to have effects on chondro-osseous and on facial and central nervous system development. We suggest the term "gracile bone dysplasia" to describe this disorder.