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Biomedical subjects

J C Cheng

Publications and source records attributed to J C Cheng.

At least 145 records · Page 8Linked to original sources
PubMed1984

The Krukenberg procedure: a method of treatment for unilateral anomalies of the upper limb in Chinese children.

Eight Chinese patients with congenital absence of the hand were treated with the Krukenberg procedure to provide a pinching function of the forearm bones. The rehabilitation program was simple and the functional results were satisfactory. We have selected three cases to illustrate the Krukenberg procedure and the indications for this operation, a procedure that is particularly suitable for the Chinese who are culturally adapted to chopstick functions.

Activities of Daily Living↗
PubMed1984

Polydactyly of the thumb: a surgical plan based on ninety-five cases.

Preaxial polydactyly constitutes the most common group of congenital anomalies of the hand among the Chinese population of Hong Kong. Ninety-five cases from the Orthopaedic/Plastic and Reconstructive Surgery Unit, Princess Margaret Hospital, Hong Kong (March 1976 to March 1981), were reviewed. The cases were classified according to Wassel's classification (1969) into seven types. The most common category was type IV followed by types II, V, III, VII, I, and VI. The treatment of each type was analyzed. Bilhaut's procedure was satisfactory for type I, and a modified technique was used for types II and III. A method of shaving the incongruous articular cartilage was used in type IV. Removal of the extra digit and osteotomy of the metacarpal usually were required for type V. The experience with types VI and VII was too limited for assessment. Short-term results (1 to 6 years) have been satisfactory, but follow-up until skeletal maturity to assess the ultimate functional and cosmetic results is necessary.

Adult↗
PubMed1982

Congenital anomalies of the upper limb among the Chinese population in Hong Kong.

Three hundred twenty-six patients with 396 congenital upper limb anomalies are classified according to the system adopted by the International Federation of Societies for Surgery of the Hands. The relative incidence of each separate anomaly is listed and compared with that of other series. Two hundred cases are also analyzed with respect to the family history, pregnancy history, neonatal history, and associated anomalies and the results are discussed. Significant racial differences were found in the incidence of polydactyly, syndactyly, anomalies associated with syndromes, and transverse arrests. The incidence of polydactyly is higher in this series than in comparable western series.

Arm↗
PubMed1982

Finger tip injuries--a prospective study on seven methods of treatment on 200 cases.

7 common methods of treatment were selected at random for 200 cases of finger tip injuries. The methods included split skin grafting, full-thickness skin grafting, volar V-Y advancement, Kutler's bilateral V-Y advancement, revision amputation, cross-finger flap and simple dressing. These cases were seen weekly until healing was completed and then at 3 and 6 months. A proper functional assessment was given to each case at the last visit. The results were analysed along the parameters of wound healing, appearance, scar condition, sensory return, finger joint movements, motor-power and sick-leave benefits. The best results were obtained from the volar V-Y advancement method. Results were most unfavourable when cross-finger flaps were used. This latter method, therefore, was condemned. Simple dressing gave excellent results if one disregarded the lengthy period of wound healing, a somewhat tender scar and possible beaking of the nails. The other methods gave satisfactory results but had no outstanding advantage.

Amputation, Traumatic↗
PubMedDate not supplied

Microcirculation in hypertrophic scars after burn injury.

Hypertrophic scar formation is a common complication after burn injury. Early active scars show hyperemic appearances that change as the scar matures. This is a report on microcirculation in hypertrophic scars after burn injury among 50 Chinese patients with a laser Doppler flowmeter. The average period of follow-up for the patients was 20 months. The microcirculatory response in scars to vasodilation (heat) stimulus was studied. Significant differences (p less than 0.0001) were demonstrated between scars of different clinical grades of maturity when compared with normal skin. The qualitative and quantitative differences in microcirculatory blood flow were correlated with site variations and different physiologic demands from different grades of scars. The study showed that laser Doppler flowmetry was useful in the clinical grading assessment of or for scar maturity.

Adolescent↗
PubMedDate not supplied

Femoral lengthening after type IVB septic arthritis of the hip in children.

Septic arthritis of the hip in the newborn baby can result in severe long-term sequelae in the form of dislocation of the hip, loss of movement, and growth disturbance with leg-length discrepancy. For more severe discrepancies often with concomitant hip dislocation, no good solutions are readily available. This series comprised four patients with Choi's type IVB septic hip sequelae. They all had associated multiple-joint sepsis and resultant major leg-length discrepancies ranging from 6.9 to 14 cm. All underwent distraction lengthening with simultaneous correction of angulation and other deformities of the femur, three with the Ilizarov and one with the Orthofix system. The age at operation ranged from 9 to 13 years, with an average follow-up of 3 years. The overall lengthening achieved ranged from 4.5, 6.8, 12, to 13 cm, with the lengthening index from 24 to 51 days/cm. All hips remained stable, and the loss of range of hip and knee motion was not significant. Other complications included one deep pin-tract infection and one fracture of the callus.

Adolescent↗
PubMedDate not supplied

Nonsteroidal anti-inflammatory drugs and aspirin: a comparison of the antiplatelet effects.

Antiplatelet effects of common analgesics were assessed in vitro. The Streck Platelet Aggregation Test Kit (Omaha, NE) was used to measure percent platelet aggregation in response to sodium arachidonate, collagen, adenosine diphosphate, and ristocetin in patients on various analgesics. In comparison with the control group, the response to arachidonate and collagen of ibuprofen (86% vs. 33% and 55% vs. 23%), naproxen (86% vs. 43% and 55% vs. 29%), indomethacin (86% vs. 26% and 55% vs. 17%), and aspirin (86 vs. 21% and 55 vs. 23%) all demonstrated a significant yet comparable reduction in platelet aggregation (p < 0.01). Because of the comparable antiplatelet effects of aspirin and NSAIDs, the additional benefits of daily aspirin in those patients on chronic and consistent NSAID therapy must be reconsidered.

Adult↗
PubMedDate not supplied

Angular and rotational profile of the lower limb in 2,630 Chinese children.

Angular and rotational profile of the lower limbs of 2,630 normal Chinese children from newborn to age 12 years were compiled using tibiofemoral angle, intercondylar, intermalleolar distance, medial and lateral rotation of the hip, and thigh-foot angle. Children with clinical tibiofemoral angles, intercondylar or intermalleolar distances tended to be bowlegged at birth, maximally knock-kneed at age 3 and to have normal lower limbs by age 8. Medial hip rotation increased steadily from birth to a maximum of 56 degrees at age 9, and lateral hip rotation decreased from birth to a minimum of 30 degrees at age 9. Significant differences between Chinese children and children of other races were highlighted.

Ankle Joint↗