James C. Drennan

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The metaphyseal-diaphyseal angle is the angle created by the intersection of a line through the transverse plane of the proximal tibial metaphysis with a line perpendicular to the long axis of the tibial diaphysis. This angle represents the degree of deformity of the proximal end of the tibia in a patient with clinical bowleg deformity and permits early(More)
The majority of patients with chronic infantile and juvenile forms of spinal muscular atrophy survive to adult life. Forty-four patients have been reviewed at an average of 17 years after diagnosis. The subdivision of patients into four groups, based on the maximal physical function developed by the individual, correlates well with the onset and severity of(More)
A retrospective review was performed to investigate patterns of spinal deformity associated with neurofibromatosis and the incidence of pseudarthrosis and curve progression after spinal fusion. Twenty-three of the 32 patients (72%) with spinal deformity had dystrophic curve patterns. The incidence of pseudarthrosis was 38% for the dystrophic group(More)
In 1968 a technique of osteotomy-excision of the lumbar spine for congenital kyphosis in myelomeningocele in the newborn was described and the initial results were reviewed (Sharrard 1968). Since then the technique has been extended for the management of increasing kyphosis in older children in whom the operation had not been done immediately after birth.(More)
Magnetic resonance imaging (MRI) was used to image the feet of 10 infants with congenital talipes equinovarus. Images in an intermediate density and T2 sequence are most useful. In the transverse plane, the primary deformity appears to be localized to a medical deviation of the talar neck and head, with an accompanying internal rotation of the calcaneus(More)
The clinical and radiographic results of posteromedial release performed on 30 patients (44 feet) were assessed. The patients were divided into three groups based on their average age at the time of operation (early, 4.4 months; middle, 9.1 months; and late, 16.1 months). All patients had similar preoperative deformity, surgical management, and(More)
Arthrogryposis multiplex congenita involving the upper extremity can be associated with significant contractures of major joints. Treatment options to maximize upper extremity motion and function include passive joint stretching, serial casting, or surgical intervention. This study reviewed all patients at Carrie Tingley Hospital with arthrogrypotic wrist(More)
Patterns of muscle degeneration in patients with peripheral neuropathies exhibiting pes cavus deformity were studied by computed tomography (CT). Twenty-six patients attending the muscle disease clinic at Newington Children's Hospital with hereditary sensory motor neuropathies (HSMN) I, II, or III had clinical and radiographic assessment in addition to CT(More)