A case of the Jansen type of metaphysial dysostosis, followed for fifteen years from childhood to the age of nineteen, is reported. Radiographs taken at five years revealed the characteristic metaphysial changes in all the tubular bones, especially those of the hands and feet. The acetabular and glenoid areas, the costochondral junctions and the sternal ends of the clavicles were also involved....

functions. Such a concept of a single tissue with a double purpose arises naturally from the fact that light microscopy of an epiphysis fails to demonstrate any morphological feature by which the future articular cartilage may be distinguished from that which is destined ultimately to be converted into bone. The epiphysis develops from a uniform mass of hyaline cartilage in the centre of which ...

Paediatric chordomas are rare malignant tumours arising from primitive notochordal remnants with a high rate of recurrence. Only 5 % of them occur in the first two decades such less than 300 paediatric cases have been reported so far in the literature. In children, the average age at diagnosis is 10 years with a male-to-female ratio closed to 1. On the opposite to adults, the majority of paedia...

BACKGROUND Contracted valgus flat foot in the adolescent is frequently caused by tarsal synostosis or synchondrosis. These synostoses are prevalently symptomatic during adolescence, when by ossifying they block the subtalar joint in valgus. Careful and detailed examinations might reveal additional abnormalities. CASE PRESENTATION A 16-year-old boy of Austrian origin presented with contracted ...

Injuries of the cervical spine are relatively rare in children but are a distinct clinical entity compared with those found in adults. The unique biomechanics of the pediatric cervical spine lead to a different distribution of injuries and distinct radiographic features. Children younger than 9 years of age usually have upper cervical injuries, whereas older children, whose biomechanics more cl...

The effect of food consistency on the bone appositional pattern at the growth site in the palatal region of the maxillary complex in growing rats was examined by quantitative analysis employing bone histomorphometry. Sixty inbred male rats aged 14 days in the weaning period were divided into two groups. One group was fed a conventional solid diet in addition to milk, while the other received th...

tion of the heart, and particularly of the right ventricle, when the heart is in its correct central position. If during intra-uterine life the heart is not central and during development lies to the left side, leaving the mediastinum empty, there will be no positive force to elevate the sternum, but rather a negative pressure which will suck it in. The ribs and sternum ossify early, but the co...

It was suggested by Crilly (1972) and by Warrell and Taylor (1976) that reduction of pressure on the epiphysial cartilage might permit increase in growth. It had been recognised for some time that compression reduced epiphysial growth (Haas 1945) and Strobino, French and Colonna (1952) had examined the rate of bone growth under increasing compression. There is no record in the literature, howev...

Immunoassayable and bioassayable growth hormone responses to vibration-induced activation of muscle spindle afferents of the soleus (Sol) or tibialis anterior (TA) muscles were studied in 10 men. Subjects were supine while a 10-min vibration stimulus (100 Hz; 1.5-mm amplitude) was applied to the muscle, with each of the muscles tested on separate days. Blood samples were collected before, durin...

Chondrosarcoma of the chest wall is a rare primary neoplasm found to occur in elderly men. Patients present with an enlarging, painful, anterior chest wall mass arising from either the vicinity of the costochondral junction or the sternum. Treatment includes wide resection with appropriate chest wall reconstruction. We report an unusual presentation of this uncommon tumor occurring as a huge ch...