Search PubMed⌕ Search

Biomedical subjects

M Rang

Publications and source records attributed to M Rang.

11 recordsLinked to original sources
PubMed1992

Why do most surgical incisions require lengthening? How to avoid it.

When an incision is retracted, it shortens because skin does not actually stretch--it only shifts. A mathematical model accurately predicted operating room experience. Average retraction of 30-50% shortens an incision by 15%. Therefore, an incision to expose fixed bony landmarks should be 15% longer than the distance between them.

Humans↗
PubMed1979

Erythromelalgia.

Erythromelalgia is an extraordinary disorder of unknown etiology and pathophysiology that resembles the post-traumatic reflex dystrophy syndromes but has not been described previously in the orthopedic literature. Its distinctive triad of intense burning extremity pain associated with erythema and increased skin temperature are diagnostic. Primary or idiopathic and a secondary or associated form have been identified. The latter occurs in association with an underlying disease process, especially myeloproliferative disorders. Treatment with pharmacologic agents and surgery are ineffective except in the secondary group where treatment of the associated disorder generally results in a remission. Symptoms in the primary group can be minimized by appropriate environmental control with cooling and avoiding heat-producing situations that would raise skin temperature above a critical thermal threshold.

Adolescent↗
PubMed1978

Congenital calcifying hamartoma. A resolving lesion producing gastrocnemius contracture--report of a case.

An 18-month-boy developed a calcifying mass in the gastrocnemius muscle. The lesion presented on the day of birth and resolved completely within 5 months leaving only a fibrous cord replacing the medial head of the gastrocnemius. There were no facts in the history to suggest the etiology of this lesion. Calcification of a vascular hamartoma with subsequent fibrosis is proposed as a possible explanation. The benign course of this lesion is evidence of the value of conservative treatment.

Calcinosis↗
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

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↗