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Biomedical subjects

S G Kabra

Publications and source records attributed to S G Kabra.

At least 19 recordsLinked to original sources
PubMed1991

Ankle-foot prosthesis with articulated human bone endoskeleton: force-deflection and fatigue study.

The durability and function of three ankle-foot prostheses fabricated using a naturally articulated, fresh cadaveric human bone endoskeleton set in a fiber reinforced rubber shell were studied. Radiographic and force-deflection analyses before and after cyclic dorsiflexion for 5,000, 100,000, and 3 million cycles revealed no structural or functional changes. The endoskeleton foot compared favorably with the Jaipur ankle-foot prosthesis. It is concluded that formalin-fixed fresh foot bones with intact articulations obtained from cadaveric or surgically amputated limbs are suitable for use in ankle-foot prostheses because they withstand prolonged use without functional or structural deterioration.

Amputation, Surgical↗
PubMed1991

Equipment and methods for laboratory testing of ankle-foot prostheses as exemplified by the Jaipur foot.

A load deflection and a cyclic loading apparatus capable of measuring dorsiflexion/plantarflexion, pronation/supination, internal/external rotation, and cyclic dorsiflexion (60 cycles per minute) of ankle-foot prostheses are described. A test protocol was developed to assess the functional parameters of the Jaipur ankle-foot prosthesis before and after prolonged cyclic loading, with the simultaneous aim of evaluating these machines. The results on 26 Jaipur ankle-foot prostheses revealed that: 1) the prosthesis enjoys considerable mobility in three planes, confirming its known versatility; 2) the prosthesis is robust; and, 3) the testing machines deliver reproducible results and are suitable for in-house testing of ankle-foot prostheses.

Amputation, Surgical↗
PubMed1990

Articulated cadaveric bones as a structural endoskeleton in an ankle-foot prosthesis: a preliminary report.

This report describes the construction and evaluation of an ankle-foot prosthesis using human cadaveric bones as the endoskeleton inside a fiber-reinforced vulcanized rubber shell. Cadaveric bones and exhumed skeletal bones were used. Three designs were fabricated, subjected to radiographic evaluation, and underwent 4-week field trials of normal daily use by a unilateral below-knee amputee. The rubber shell retained the position of the bones, permitted movements at the joints in various stages of the stance phase, and restored the bones to their neutral position when the foot was unloaded. The cadaveric prosthesis provided for plantar flexion of the foot when the heel was loaded and for locking of the joints to restrain excessive movement when the foot came to rest. While fresh cadaveric bones withstood all the stresses of active walking, exhumed macerated bones fractured and fragmented with use.

Ankle↗
PubMed1989

Idiopathic sclerosing encapsulating peritonitis.

Sclerosing encapsulating peritonitis (SEP) was diagnosed in two men, one middle-aged woman, and a prepubertal girl, none of whom had been treated with beta-blockers, peritoneal dialysis, or peritoneal shunting. Idiopathic SEP has hitherto been reported mainly in adolescent females. It is hypothesised that in these patients, who were from two adjacent districts of Rajasthan, an aetiological factor was consumption of cereals infected with fungus that contained biologically active amines.

Adult↗
PubMed1987

Glucose oxidase as an adjunct to penicillin on penicillin resistant staphylococcal isolates.

The study was carried out to find out the efficacy of glucose oxidase as an adjunct to penicillin and its comparison with cloxacillin on fifty penicillin resistant staphylococcal isolates. There is an unequivocal evidence that the combined use of glucose oxidase and penicillin is superior in controlling penicillin resistant coagulase positive staphylococcal infections in comparison to cloxacillin.

Drug Resistance, Microbial↗
PubMed1983

The trabecular pattern of the calcaneum as an index of osteoporosis.

Radiographs of the foot and hip in 61 patients with fractures of the upper end of femur have been studied, noting the progressive loss of bone trabeculae with age. The trabecular pattern in the calcaneum (expressed as the calcaneal index) closely parallels that in the upper end of the femur (Singh's index) and is easier to assess. Both indices have a significant correlation with age.

Adult↗
PubMed1979

A new method of urinary stone analysis by batik histochemical staining of thin sections.

Thin sections of urinary calculi are prepared by petrographic methods using Araldite as the mounting medium. By covering the remaining part of the section with wax, an exposed segment of the section is stained by a histochemical technique. By the process of dewaxing and rewaxing, successive adjacent segments are stained by GBHA, Von Kossa, Schultz, and titan yellow methods for calcium oxalate, apatite, uric acid and urates, and magnesium in magnesium ammonium phosphate, respectively. If desired, matrix in additional segments is stained with PAS and aqueous toluidine blue. Microscopic examination of each layer through all the stained segments of a stone section reveals its chemical nature. Thus the chemical composition, morphology, and spatial distribution of the crystalline and matrix constituents of thin sections of urinary calculi are simultaneously revealed in situ.

Histocytochemistry↗