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Biomedical subjects

M Rang

Publications and source records attributed to M Rang.

51 records · Page 3Linked to original sources
PubMed1977

Is cerebral palsy a preventable disease?

The causes of cerebral palsy in 96 young patients were analyzed. Potentially avoidable situations including inappropriate obstetric management and inappropriate neonatal care occurred in 38%. There should be a shift in emphasis from the rehabilitation of cerebral palsy to its prevention by improving services for reproductive care. Prevention can be undertaken by 1) identification and referral of the mother with a high-risk pregnancy to a perinatal center for her confinement; 2) fetal monitoring and appropriate resuscitation at delivery; and 3) early transfer of compromised infants to a neonatal care unit under good supervision.

Abruptio Placentae↗
PubMed1975

Infantile cortical hyperostosis. Follow-up of 29 cases.

Twenty-nine cases of infantile cortical hyperostosis with a wide range of bone involvement are reviewed. Soft tissue painful swellings began before roentgenographic changes appeared in the underlying bone. In 17 babies gradual involvement of different bones was noted. In seven cases lesions previously healed became reactivated. The disease is self-limiting and appears in a narrow age group. Mandibular involvement is most common. The clinical picture and laboratory data are reported. Differential diagnosis and possible etiological factors are discussed. The similarity of infantile cortical hyperostosis to extreme periosteal new bone formation in response to trauma in sensorily deprived children is suggested as a possible etiological factor.

Bone Regeneration↗
PubMed1975

Observations concerning fractures of the lateral humeral condyle in children.

From an anatomical study and clinical review of fractures of the lateral humeral condyle in children, the following conclusions are drawn. The mechanism of injury is a violent varus force with the elbow in extension, the condyle being avulsed by the lateral ligament and the extensor muscles. If the fracture is incomplete, with an intact hinge of pre-osseous cartilage medially, the fragment will not be displaced. If the fracture is complete the fragment may be displaced, and open reduction with internal fixation is mandatory. The results of open reduction more than three weeks after the fracture are no better than those of no treatment at all, and may kill the lateral condylar fragment by damaging its blood supply. The major problem of a neglected fracture is tardy ulnar nerve palsy; to avoid this, immediate anterior transposition of the nerve is recommended, operation for the fracture itself being of no benefit.

Child↗
PubMedDate not supplied

Tardy displacement of traumatic radial head dislocation in childhood.

The diagnosis of traumatic dislocation of the radial head, either isolated or as part of a Monteggia fracture-dislocation, was delayed in 10 of the 110 children treated with these injuries during the study period. In eight children, the dislocation was overlooked on the initial radiographs. In two children, the radial head was reduced on the initial elbow radiographs, but it was dislocated 10 days later in one child and 21 days later in the other. The most likely explanation is that the radial head dislocated at the time of impact, spontaneously reduced by the time the first radiographs were obtained, and redislocated while the arm was in a cast. We conclude that radiographic assessments of the radiocapitellar joint, by using the radiocapitellar line, are required in children with elbow and forearm injuries at presentation and when the cast is removed.

Accidental Falls↗
PubMedDate not supplied

Adductor release in nonambulant children with cerebral palsy.

Historically, nonambulatory children with cerebral palsy represent a "group at risk" for spastic hip dislocation. We reviewed the effectiveness of adductor release and anterior obturator neurectomy in treating 86 hips at risk in 50 nonambulatory children. Results were judged by comparing the migration percentages measured on the preoperative, early postoperative, and final postoperative radiographs. Adductor release succeeded in preventing hip dislocation and obviating the need for further surgery in 80% of cases. Patients with preoperative uncoverage exceeding 50% were found to be at greater risk for deterioration of femoral head coverage despite adductor release. Unilateral adductor release had a negative effect on the nonoperated hip.

Cerebral Palsy↗
PubMedDate not supplied

Ultrasonography of the unossified patella in young children.

Ultrasonography has become a useful technique to assess the cartilaginous hip of the newborn. We applied this technique and found that it gave useful information in helping to locate the unossified patella in two cases of congenital dislocation of the patella.

Contracture↗
PubMedDate not supplied

Pseudarthrosis of the rabbit tibia: a model for congenital pseudarthrosis?

The purpose of this study was to create a rabbit model of a pseudarthrosis of the tibia by passively constricting circumferential diaphyseal growth. A circumferential strip of Marlex mesh was placed around both tibiae of eight growing rabbits. It was sutured as a circumferential tube on the experimental tibia and not sutured together on the control side. The experimental tibiae developed significant narrowing, cystic changes, and sclerosis. Five of 11 experimental tibiae went on to pathological fracture, compared to no fractures in the eight control tibiae. The mesh was sutured together around both tibiae in another six rabbits. Release of the band 6 weeks later allowed healing of the narrowed tibiae, with or without an experimentally produced fracture. We conclude a passive constriction phenomenon may contribute to the development of congenital pseudarthrosis of the tibia. Removal of the band improved the chances of healing, which has implications for the treatment of children.

Animals↗
PubMedDate not supplied

Acute dislocation of the patella in children. The natural history.

On the basis of a survey of 55 cases, we can predict that one child in 6 with acute dislocation of the patella will develop recurrent dislocation. Two in 6 children have minor symptoms and the remainder are asymptomatic. The majority of patients show the radiological signs of patellofemoral dysplasia.

Child↗
PubMedDate not supplied

The role of trauma in the pathogenesis of the osteochondroses.

Compression fracture of the secondary centers of ossification is an important factor in the pathogenesis of Perthes' disease and osteochondrosis dissecans. Avulsion fracture produces osteochondrosis affecting the non-articular epiphyses, e.g., Osgood-Schlatter disease. Some of these injuries appear to be produced solely by repetitive trauma and others may represent pathologic insult to constitutionally vulnerable or revascularizing bone, e.g., the femoral head in Perthes' disease.

Animals↗