Search PubMed⌕ Search

Biomedical subjects

T R Light

Publications and source records attributed to T R Light.

At least 37 records · Page 2Linked to original sources
PubMed1988

Injury to the immature carpus.

Traumatic injury to the immature carpus is infrequent because of the sequence of carpal ossification, the resiliency of surrounding ligaments, and the vulnerability of the radius to fracture. Diagnosis requires careful palpation and suspicion, particularly in younger children. Treatment should consider the healing, growth, and modeling potential of the carpus.

Adolescent↗
PubMed1987

Metacarpal epiphyseal fractures.

Five cases of injuries to the distal metacarpal physis and epiphysis are reviewed. Axially applied loads may result in growth disturbances. The extent of the physeal injury is not always evident on the initial radiographs. Decreased longitudinal growth of the metacarpal occurs in those injuries in which the physis has been damaged.

Adolescent↗
PubMed1987

Fracture and ischemic necrosis of the immature scaphoid.

The progressively ossifying scaphoid of the child is well protected but is not immune to injury. The diagnosis of scaphoid fracture may be difficult when the fracture occurs through the osteochondral interface. Nonunion and ischemic necrosis of the proximal pole fragment--complications more often seen in adults sustaining scaphoid fracture--may occur in children, as shown by the young patient presented here.

Carpal Bones↗
PubMed1987

The effect of immediate constrained digital motion on the strength of flexor tendon repairs in chickens.

Profundus tendon lacerations were repaired in the central toes of 216 chickens, and the digits were either immobilized in a cast or allowed immediate constrained motion in a tethering splint. The effect of digital motion on the early phases of tendon healing was investigated by comparing the rupture strengths of the two groups during the first 40 days after repair. The repairs in immobilized digits showed marked decreases in strength during the first 20 days, while the tendons in mobilized digits showed immediate and progressive gains in strength through the time intervals studied. By 5 days, the difference in strength between the two groups was significant (p less than 0.05), and the magnitude of this difference increased with time. The model developed in this study demonstrates that an initial loss of flexor tendon repair strength is not inevitable. Immediate constrained digital mobilization allows progressive tendon healing without an intervening phase of tendon softening.

Animals↗
PubMed1987

Salvage of intraarticular malunions of the hand and wrist. The role of realignment osteotomy.

Malunited intraarticular fractures of the hand and wrist may be repaired months following injury by osteotomy through the healed fracture site. If a congruent joint can be reestablished, pain may be relieved while skeletal alignment and motion are improved. Successful reconstruction depends on careful preoperative evaluation and patient selection. Extensile surgical exposure, accurate reduction, and firm skeletal fixation are essential for this technique. Early supervised joint mobilization allows maximal motion. Eight of nine operated joints have regained substantial motion. One procedure failed to establish firm fixation in osteoporotic bone and required arthrodesis. Secondary tenolysis was required on one occasion. An additional patient gained substantial pain relief and motion from limited articular surface resection.

Adult↗
PubMed1986

A hole in (B) one.

Radiolucencies are frequently observed in the carpus, often in asymptomatic patients. Evaluation of the clinical significance of these radiolucent areas is aided by use of bone scanning. In this case, correlation of the physical exam, bone scan and tomograms allowed effective direct surgical treatment of a symptomatic intraosseous ganglion.

Adult↗
PubMed1985

Hands on stamps.

Explore the source record for details and available documents.

Brazil↗
PubMed1984

The anatomy of metaphyseal torus fractures.

On the basis of several human and animal specimens, torus (bone-expanding) fractures appear to be a combination of plastic deformation and complete fracture of the cortex in the transition area of woven-fibered metaphyseal bone to lamellar (osteon) diaphyseal bone. The cortex in this region of susceptibility undergoes an abrupt transition from relative porosity to increased density. The changes in the biomechanic characteristics in the transition region may predispose to local failure, while micro- and macrostructure dictate that the pattern of failure will be torus deformation rather than a complete transverse fracture.

Animals↗
PubMed1983

Hands on stamps.

Explore the source record for details and available documents.

Arthritis↗
PubMed1983

Hands on stamps.

Explore the source record for details and available documents.

Blindness↗
PubMed1982

A protocol for selecting patients with injured extremities who need x-rays.

To help curb excessive radiography, we developed a protocol for selecting patients with injured extremities who need x-ray examination, and we tested the protocol prospectively in 848 patients to determine its safety and effectiveness. Strict adherence to the protocol would have reduced x-ray usage by 12 per cent for upper extremities and 19 per cent for lower extremities. The actual reductions were 5 per cent and 16 per cent, respectively, since further reductions were limited by patient's demands for x-ray examinations. One fracture in 287 were missed, but the treatment was appropriate and the outcome satisfactory. By eliminating superfluous x-ray procedures, the protocol could reduce charges by $79 million to $139 million nationwide, without compromising quality of care or increasing malpractice liability. Nevertheless, even the best protocol cannot eliminate all negative x-ray studies. These results should serve as a stimulus for judicious use of radiography, but also as a warning to avoid overzealous cost-containment strategies that would reduce x-ray usage to below a safe threshold.

Connecticut↗