摘要:

We performed three-dimensional force analyses on the hips of 50 normal patients and 50 patients with slipped capital femoral epiphysis to determine if mechanical factors alone could account for slips. We found that slipped epiphysis patients have reduced resistance to shear because of increased body weight and a decreased neck shaft-plate shaft angle. Slipped epiphysis patients have relative retroversion, and this generates increased sagittal plane shear stress at the proximal femoral growth plate. We suggest that, during running, these mechanical factors cause shear failure of the growth plate in obese adolescencts.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

This study determined whether a significant difference in response to vibratory stimuli was consistently present in a large group of children with idiopathic scoliosis as compared with age-matched controls. Fifty-eight unselected adolescent females with documented progressive idiopathic scoliosis were studied along with age-matched controls. Threshold to detection of a vibratory stimulus was measured in both the right and left upper and lower extremities. Results indicated that highly significant differences existed between scoliotic children and controls at all sites tested (p < 0.01), with scoliotic children being more sensitive than controls. The results support the presence of a central aberration in posterior column function that may be a primary etiology of idiopathic scoliosis.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Eight dogs, divided into two groups of four by varying pin rigidity, underwent 15% left tibial lengthening by the Ilizarov method. In group I, “tensioned” 1.6-mm wires maintained a rigidity approaching that of 4.0-mm pins. In group II, the wires, maintained at half the tension, averaged 45% of the rigidity measured in group I. All dogs in group I filled the experimental gap with de novo osteogenesis, whereas all of the dogs in group II prematurely bridged the gap, arresting the process of osteogenesis. From these experimental results, clinical trials have been started using commercially available external fixation devices utilizing pins with equivalent rigidity.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

“Growing pains” is a benign clinical entity of unknown etiology. This study examines a muscle stretching treatment based on a theory that the etiology of these pains is related to fatigue. The experimental group (18 children) showed a more rapid resolution of their symptoms over an 18 month period when compared to the control group (16 children).

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

A retrospective study was performed on 25 patients with cerebral palsy who underwent transfer of the flexor carpi ulnaris to the radial wrist extendors. The mean age at the time of surgery was 8 years 1 month. The mean follow-up was 8 years 7 months. At follow-up, the mean active wrist dorsiflexion was 44.2°, palmar flexion was 19.0°, supination was 40.2°, and pronation was 53.4°. According to a modification of Green's evaluation system, there were six excellent, nine good, five fair, and five poor results. Two patients required further surgery to correct a supination, dorsiflexion contracture. We found the transfer to be quite effective in improving wrist dorsiflexion, although there was often a significant loss of active palmar flexion postoperatively. The patient therefore should have good digital extension (with the wrist extended passively above neutral) to be considered for the transfer.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Hereditary spastic paraplegia is a genetically transmitted disease that is usually autosomal dominant. Characterized by a slow progression of spastic paraparesis, it is frequently misdiagnosed as cerebral palsy. Our experience consists of six families with a total of 26 affected members. All initial referrals were children with a slowly progressive paraplegia. Each child was noted to have slightly delayed motor milestones, normal intellect, and no history of perinatal cerebral event. Each child was treated when necessary with appropriate tendon lengthenings. Recognition is the key to management. A careful patient and family history will reveal the hereditary nature of the disease and help develop treatment plans.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

A previously unreported forefoot deformity (cavus) is described, clinically and radiologically, and a surgical operation for successful correction is detailed.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

The aponeurosis lengthening described in this study was performed on 156 patients (219 procedures) with spastic equinus deformities. There was only one wound complication and no calcaneus deformities from overlengthening. The recurrence rate requiring relengthening was high (48% of the procedures), particularly if the initial operation was performed before the age of 5 years. The length of postoperative immobilization did not affect the recurrence rate. The aponeurosis lengthening technique described is a simple lengthening of the aponeurosis, leaving the soleus largely intact without the use of internal sutures. It has a negligible complication rate, but a high rate of recurrent equinus.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

A retrospective study was performed in 27 patients who underwent innominate osteotomy for the treatment of severe Perthes disease. Time intervals between surgery and final follow-up ranged from 5 years to 16 years 4 months. Preoperative and postoperative periods of treatment were often more prolonged than those reported by Salter. One-half of the patients were less than 6 years of age at onset of the disease. A number of patients had significant deformity of the femoral head. Nevertheless, clinically good or fair results were obtained in 88% of the patients and poor results were found in 12%.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Fifty patients with clinical suspicion of hip dislocation were investigated prospectively with a dynamic ultrasound stress test. A posterior force was applied to hips in flexion and any movement between the femoral head and the acetabulum was measured. The results of this test showed that posterior movement ranged from 0 to 13.0 mm. Hips that were clinically normal had a mean movement of 1.4 mm, hips with minor clinical instability had a mean movement of 0.6 mm, hips with moderate instability had a mean movement of 4.5 mm, and those with major instability had a mean movement of 5.1 mm. This was statistically significant to a 1% confidence interval. We propose two groups of ultrasound-detected movement: group A <5.0 mm representing physiologic laxity, and group B ° 5.0 mm being pathological and requiring treatment.

ISSN:0271-6798    

出版商:OVID    

年代:1988

数据来源: OVID