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Biomedical subjects

B van Linge

Publications and source records attributed to B van Linge.

30 records · Page 2Linked to original sources
PubMed1981

Rotational deformities after femoral shaft fractures in childhood. A retrospective study 27-32 years after the accident.

Fifty femoral shaft fractures sustained in childhood and for the most part treated conservatively were studied in retrospect 27-32 years after the accident, with special reference to rotational deformity. Femoral rotation was measured by means of so-called anteversion X-rays according to Dunn-Rippstein, and the same radiological examination was carried out in a control group of 100 adult volunteers. The L/R differences in femoral rotation were studied in the patient group in comparison with the control group. Persistent rotational dislocation was found in only one case, and had had no demonstrable untoward consequences. The established view that rotational dislocation is incapable of spontaneous correction is refuted with aid of clinical and experimental data from the literature and personal observations. It is concluded that, in the patients studied, good results have been obtained by the conventional traction methods of Bryant and Russel. The use of the so-called "Weber Bock" to replace these methods is therefore not recommended.

Adolescent↗
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↗