Biomedical subjects

T Bellstrøm

Publications and source records attributed to T Bellstrøm.

13 recordsLinked to original sources

PubMed1992

Lack of correlation between ulnar variance and carpal bone angles on lateral radiographs in normal wrists.

It has been proposed that negative ulnar variance is a predisposing factor to development of posttraumatic carpal ligamentous instability. However, this implies that no correlation exists between ulnar variance and carpal bone angles in the normal wrist. Carpal bone angles on lateral wrist radiographs and ulnar variance were measured in a series of 75 normal wrists. The mean ulnar variance was -0.03 mm (SD 1.56, range -5 to 5). The correlation coefficients were 0.06, -0.11, and -0.05 between the ulnar variance, and radiolunate, radioscaphoid, and scapholunate angles, respectively. A correlation between the carpal angles on lateral wrist radiographs, and ulnar variance in normal wrists could not be demonstrated, suggesting that the presence of negative ulnar variance may serve as an impartial clue to the presence of ligamentous instability.

Adult↗

PubMed1991

Observer variability in measurements of carpal bone angles on lateral wrist radiographs.

Determinations of carpal bone angles are used in the clinical evaluation of carpal malalignment. Eleven frequently referred radiological measures in lateral projection of the wrists in 23 wrists were assessed using different definitions of axes. Interobserver- and intraobserver variations were calculated. The standard deviation of the interobserver variation ranged from 2.60 degrees to 18.15 degrees, and the intraobserver variation from 1.89 degrees to 4.66 degrees depending on the angles measured. The use of three angles for the least observer variability in assessment of carpal alignment is recommended. These angles were defined from the following carpal bone axes: radius, the line through the center of the medullary canal at 2 cm and 5 cm proximal to the radiocarpal joint; lunate, the line perpendicular to the tangent of the two distal poles; scaphoid, the tangent of the palmar proximal and distal margins, and capitate, the tangent of the dorsal margin of the diaphysis of the third metacarpal bone (substitute axis).

Adult↗

PubMed1990

Monteggia lesions in children and adults: an analysis of etiology and long-term results of treatment.

The mechanism of trauma and late results of treatment were analyzed in 17 pediatric and 16 adult Monteggia lesions. Pediatric Monteggia lesions were almost entirely found to be the result of low energy trauma leading to a closed, noncomminuted fracture in an otherwise noninjured child. In the adult cases, however, these lesions were most often found to be the result of high energy trauma leading to open and comminuted fractures. Furthermore, 62% of the adults had other, and often more serious, injuries. Results at follow up (average 7 years) were excellent in the pediatric cases, whereas all adults had sequelae, especially regarding range of motion. The results of this study clearly suggest that a Monteggia lesion represents a more severe injury in the adult.

Activities of Daily Living↗

PubMed1989

Hip fractures in children. A long-term follow up of 17 cases.

Late results (average 18 years posttrauma) after hip fractures in 17 children are reported. The average age at the time of fractures was 8.5 years (range 2 to 15 years). The treatment was conservative for undisplaced or slightly displaced transcervical and cervicotrochanteric fractures (Delbet's Type II and III) as well as for intertrochanteric fractures (Delbet's Type IV). The overall complication rate was 25%. Avascular necrosis of the femoral head was seen in two hips, premature epiphyseal closure with leg shortening in two cases, and a coxa vara in one hip. These complications only had resulted in few symptoms at follow up.

Adolescent↗

PubMed1987