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Biomedical subjects

T R Norris

Publications and source records attributed to T R Norris.

5 recordsLinked to original sources
PubMed1989

The efficacy of intraoperative autologous transfusion in major shoulder surgery.

Perioperative blood loss associated with 36 cases of major shoulder surgery in which an intraoperative autologous transfusion device was used was compared with a control group of 36 shoulder surgery patients to determine the effectiveness of intraoperative autologous transfusion (IAT). Total blood loss in this retrospective review was evaluated by assessing the volume of transfused banked blood and the change in hematocrit. All surgical cases were performed by the same surgeon. The procedures considered in the study were humeral head and total shoulder replacement. Use of an intraoperative autotransfusion device was associated with fewer units of transfused banked blood and similar or smaller drops in hematocrit. While shoulder surgery can involve substantial blood loss, the authors recommend intraoperative autologous transfusion for revision of failed shoulder surgery, arthrodesis, joint replacement, or repairs of massive cuff tears when mobilization and tendon transfers are anticipated. The risk of disease transmission through banked blood, especially of acquired immune deficiency syndrome (AIDS) and hepatitis viruses, has increased the need for a heightened awareness and use of alternative blood sources such as IAT.

Acquired Immunodeficiency Syndrome↗
PubMed1983

Evaluation of sensibility and function with microsurgical free tissue transfer of the great toe to the hand for thumb reconstruction.

Detailed evaluation of sensibility and function on 10 patients was carried out on an average of 42 months after thumb reconstruction by microsurgical free tissue transfer. Sensibility based on modified two-point discrimination and ridge criteria was found to be directly related to the patient's age at time of neurosuture. The plantar aspect of the distal 2 cm of the normal toe showed two-point value averaging 6 mm in 20 normal shoe-wearing adults, compared to values of 12 mm when the toe was tested over the plantar surface of the proximal half of the distal phalanx. Metacarpophalangeal joint motion and interphalangeal joint motion were limited when compared with the opposite normal thumb and unoperated great toe. Grip strength and pinch strength reflected the degree of associated injuries in the hand. Cold intolerance was present in all patients. Patients' subjective assessment of their ability to use their hand as compared to their hand prior to injury was rated at less than 10% preoperatively compared to 52% to 87% postoperatively. None of the patients perceived a problem of social acceptance after the surgery. Postoperative studies of the feet revealed concentration of weight bearing between the second and third metatarsal heads on Harris mat studies and slowing of the forward and medial progression of the center of pressure on gait analysis. Some weakness in push-off and cutting maneuvers in sports activities was reported in half of the patients. None of the patients experienced difficulty when running long distances on level ground. All the patients returned to gainful employment postoperatively.

Adolescent↗
PubMed1977

Delayed flexor tendon repair in no man's land.

Thirty seven digital flexor tendon injuries in 31 patients were treated by closure of the skin and delayed repair from 24 hours to 21 days later. All skin wounds healed without serious complication, and there were no infections. On examination at a minium of 4 months after repair, 36% had total active motion (TAM) of 220 degrees, 32% from 200 degrees to 220 degrees, 6% from 180 degrees to 200 degrees and 26% with less than 180 degrees. Under proper conditions, repair of flexor tendons can be carried out with the expectation of results comparable to more complex reconstruction procedures.

Adolescent↗
PubMedDate not supplied

Isolated fracture of the humeral capitellum.

Twenty-nine patients with fractures of the capitellum of the humerus were treated at the New York Orthopaedic Hospital during 15-year period; 17 were available for follow-up assessment. A classification based upon the specific nature of the fracture and the degree of trochlear involvement is a suggested guide to treatment and prognosis. Long-term follow-up studies compare resection, replacement with fixation, and closed reduction. Choice of treatment should be selective and individualized depending on age, character of the bone, and type of fracture.

Adolescent↗