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Biomedical subjects

S C Williamson

Publications and source records attributed to S C Williamson.

8 recordsLinked to original sources
PubMed1997

Dorsal capsulodesis using suture anchors.

Scapholunate instability can be treated by stabilizing the scaphoid with the dorsal wrist capsule, which acts as a tether to control palmar rotation. We began using suture anchors instead of pull-out wires to secure the dorsal capsule to the scaphoid. Thirty-eight patients were treated with this method, and 35 were followed an average of 24 months. Sixteen were pain free, 12 had pain with activity, and 7 required additional surgical treatment. Patients regained 85% of expected grip strength, with 25 of the 35 returning to their preinjury job. The scapholunate gap, reduced at the time of surgery, recurred in 31 of the 35 patients, but this alone did not correlate with symptoms. This procedure improves symptoms in a majority of patients, but like other procedures described for scapholunate instability, it does not completely cure the problem.

Adult↗
PubMed1995

Extensor tendon ruptures in rheumatoid arthritis.

The best treatment for extensor tendon rupture is prevention, either by medical management or surgical tenosynovectomy before tendon ruptures occur. Once a rupture has occurred, tendon transfer or free tendon grafting can provide acceptable restoration of extensor function. Communication with the rheumatologist is necessary to provide timely treatment for chronic dorsal tenosynovitis (and impending tendon rupture) or for single finger extension loss before the disease progresses to multiple finger extension loss. Consideration always must be given to associated joint involvement when planning surgical treatment.

Arthritis, Rheumatoid↗
PubMed1994

Ejection of the proximal scaphoid in a trans-scaphoid perilunate fracture dislocation. A case report.

Trans-scaphoid perilunate fracture dislocations are difficult injuries to treat. Described herein is the unusual case of a trans-scaphoid perilunate fracture dislocation in which the proximal scaphoid fragment was ejected into the volar aspect of the distal forearm. The significant displacement of the proximal fragment represented complete devascularization of this piece. This unique fracture raised difficult management issues in the treatment of this injury. A primary proximal row carpectomy was performed, with a successful clinical result.

Adult↗
PubMed1992

Difficult reductions in traumatic patellar dislocation.

A traumatic lateral dislocation with internal rotation of the patella can be unreducible using conventional maneuvers. These unusual dislocations may involve locking of the patella on the lateral femoral condyle. In these cases, reduction can be achieved by applying a downward force to the lateral aspect of the patella, which reduces the rotational deformity and unlocks the medial patellar facet.

Adult↗
PubMedDate not supplied

Modern concept for a new, improved microporous skin-closure tape.

A new improved skin-closure tape, Proxi-Strip, has been developed. It has unique performance and handling characteristics that are ideally suited for wound closure. Most importantly, its adhesive provides a strong level of shear adherence to the skin. Its backing is extensive under low forces to accommodate swelling of the underlying tissue. Its great air porosity and water transmission rates augur well for the presence of dry skin under the tape. An antistatic compound has been added to the tape that maintains its flat configuration and facilitates its application to skin. On the basis of these unique performance and handling characteristics, Proxi-Strip skin-closure tape is recommended for wound closure.

Adhesiveness↗
PubMedDate not supplied

Computerized analysis of isokinetic torque curves for muscle strengthening.

Isokinetic exercise measurements are widely used in rehabilitation medicine for evaluation and treatment planning. Computerized peak torque, work, and power measurements in isokinetic exercise can be obtained reliably when testing muscles that cross the knee and elbow joints. Important technical considerations in torque curve analysis are axis alignment, instrument calibration, and damp and gravity correction factors. The usefulness of these measurements has been limited by the small number of accurate scientific studies providing valid normative data on healthy individuals.

Biomechanical Phenomena↗
PubMedDate not supplied

An overview of muscle strengthening.

This article gives an overview of muscle strengthening. In this review, we explore the underlying rationale, the process, and the physiologic adjustments that occur as muscles are trained to become stronger. Although controversy surrounds methods used to strengthen muscles, most agree that regular strength training exercises, regardless of the type, can be beneficial.

Body Composition↗