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Biomedical subjects

B van Linge

Publications and source records attributed to B van Linge.

16 recordsLinked to original sources
PubMed1992

CT scan prediction of neurological deficit in thoracolumbar burst fractures.

In 139 patients with burst fractures of the thoracic, thoracolumbar or lumbar spine, the least sagittal diameter of the spinal canal at the level of injury was measured by computerised tomography. By multiple logistic regression we investigated the joint correlation of the level of the burst fracture and the percentage of spinal canal stenosis with the probability of an associated neurological deficit. There was a very significant correlation between neurological deficit and the percentage of spinal canal stenosis; the higher the level of injury the greater was the probability. The severity of neurological deficit could not be predicted.

Humans↗
PubMed1991

Failure of tibial bone grafting for femoral head necrosis.

We treated 20 hips with femoral head necrosis in 16 patients using the Phemister tibial bone grafting procedure. After a mean follow-up of 3 years, the Harris hip score had improved in 15 out of 18 hips, however without radiographic improvement. In 2 hips, an arthrodesis and an arthroplasty were performed. We concluded that the aim of our treatment was not achieved.

Adult↗
PubMed1990

Oxidative phosphorylation in human muscle in patients with ocular myopathy and after general anaesthesia.

The fuel preference of human muscle mitochondria has been given. Substrates which are oxidized with low velocity cannot be used to detect defects in oxidative phosphorylation. After general anaesthesia, the oxygen uptake with the different substrates is much lower than after local analgesia. The latter was therefore used in the subsequent study. In 15 out of 18 patients with ocular myopathy, defects in oxidative phosphorylation could be detected in isolated muscle mitochondria prepared from freshly biopsied tissue. Measurement of the activity of segments of the respiratory chain in homogenate from frozen muscle showed no, or minor defects. In two of these patients showing exercise intolerance, decreased oxidation of NAD(+)-linked substrates and apparently normal mitochondrial DNA, further study revealed deficiency of pyruvate dehydrogenase in a girl with ptosis and a high Km of complex I for NADH in a man. Both patients responded to vitamin therapy.

Adolescent↗
PubMed1990

Reconstruction of the tibia by dual grafting. 3 cases of tumor resection.

Large defects of the tibia can be bridged with autologous cancellous grafts between the remaining fibula and a contralateral tibial cortical graft. The long-term results of this technique in 3 cases after resection of a malignant tumor were either excellent or fair. It is concluded that this technique is an effective limb-saving surgical procedure.

Adult↗
PubMed1986

Ultrasonographic detection of the patellar plica in the knee.

In 39 knees of 38 patients, an ultrasonographic investigation of the patellofemoral space was performed to detect a plica synovialis. By arthroscopic control, we found a sensitivity for the ultrasonographic method of 92% and a specificity of 73%. The method, materials, and results are discussed in this paper.

Arthroscopy↗
PubMed1985

Incidence of osteonecrosis after renal transplantation.

The incidence of osteonecrosis was 24% in 248 patients who had received 262 kidney transplants 1971-1982. However, based only on patients at risk, i.e. alive with functioning transplants, the incidence at 1, 3 and 6 years was found to be 13, 27 and 36%; after six years no new cases were found. The relative increase in body-weight at 180 days was predictive as regards risk for osteonecrosis, while the cumulative dose of steroids was not. This suggests that individual sensitivity to steroids rather than the absolute cumulative dose is involved in the development of osteonecrosis.

Body Weight↗
PubMed1976

Surgical exposure of the lesser trochanter and the medial proximal part of the femur.

An exposure of the medial proximal femur between the femoral artery and vein medially and the femoral nerve laterally is described. As far as the authors know, this exposure has not been described in the literature before. In their opinion it is to be preferred to the exposures already published when lesions of the medial proximal part of the femur are to be treated. Moreover, the exposure can be extended distally as described by Henry (1970).

Child, Preschool↗
PubMedDate not supplied

Natural history of ultrasound hip abnormalities in clinically normal newborns.

One hundred one clinically normal newborn hips showed varying degrees of sonographic hip dysplasia according to the classification of Graf. None were treated, and after +/- 6 months, radiographs showed that only four had definite dysplasia. Of these, three had had risk factors such as breech delivery or familial predisposition. Forty-three other clinically normal newborn hips showed ultrasonic instability, which spontaneously corrected. The severity of ultrasound dysplasia at birth was not related to ultimate development of the hip. Our results indicate that ultrasound should not be performed as a general screening procedure in clinically normal newborns.

Female↗
PubMedDate not supplied

Prevalence of trunk abnormalities in eleven-year-old schoolchildren in Rotterdam, The Netherlands.

The prevalence of trunk abnormalities was studied in 4,915 children aged 11 years (2,528 boys, 2,387 girls); 33% of the children were of non-Dutch origin. The following measurements were recorded: height, weight, signs of puberty, and menarche. Trunk abnormality was assessed in the erect child (asymmetry of shoulders, waistline, imbalance of the trunk, scoliosis, lordosis, kyphosis, swayback, and flexibility) and by the forward bending test (rib hump or lumbar prominence, persistence of scoliosis, kyphosis, deviant lateral aspect); 85.9% of boys and 81.3% of girls were symmetric, and abnormal forward bending test was noted in 7.1% of boys and 10.6% of girls. In non-Dutch girls, trunk abnormalities were more prevalent.

Anthropometry↗
PubMedDate not supplied

Medial deviation of the first metatarsal head as a result of flexion forces in hallux valgus.

Several questions with regard to the hallux valgus complex, which includes metatarsus primus varus, give rise to discussion. How do bunions develop? Is disturbed muscle balance at the first metatarsophalangeal joint important in the pathogenesis of the hallux valgus complex? What is the relation between dynamic plantar load distribution and pain in the ball of the foot? What is the cause of recurrences of deformity after surgery? To answer these questions, we started with the biomechanical model of Snijders et al., which states that contraction of flexor muscles of the hallux worsens its valgus angle and causes medial deviation of the first metatarsal head. The present study was designed to validate the model on patients. When pressing the hallux downward, simultaneously the force under the toe and the medial deviation of the first metatarsal head were measured on preoperative patients and on controls (35 subjects in all). We could demonstrate with statistical significance that (1) when the subjects with hallux valgus push the great toe on the ground, the first metatarsal head moved in medial direction; in other words the foot widened. In the controls, as an average, the foot became narrower. (2) The greater the valgus deviation of the hallux, the greater the effect of the toe flexors, and (3) the greater the valgus deviation of the hallux, the less maximal flexion force it can apply. Implications of these findings on conservative and surgical therapy are discussed. The recurrences of deformity after first metatarsal osteotomies are explained by the action of the hallux flexors.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗