Diabetic foot ulcers in the Hong Kong Chinese population: retrospective study.

Objective: To assess the predictive power of various parameters on the final outcome of ulcerated diabetic feet among the Hong Kong Chinese population.

Design: Retrospective cohort study.

Setting: Regional public hospital, Hong Kong.

Effects of fibrin sealant on the fixation of porous titanium and pyrolytic carbon implants.

The authors investigated the potential role the fibrin sealant system may portray in the fixation of osseous implants. The application of a layer of fibrin did not interfere with the fixation of osseous implants of either pyrolytic carbon or Biolite-coated porous titanium. A greater percentage of tissue ingrowth was observed in the porous titanium implants in the presence of the fibrin sealant system; however, no significant difference in the ultimate interfacial shear stress was observed.

Motion of the first metatarsophalangeal joint.

The analysis of motion of the first metatarsophalangeal joint in this study demonstrates the character of motion about this joint. Four instantaneous centers of rotation were calculated in the first metatarsal head that formed an arc encircling an area of increased stress patterns. The joint motion is made up of rolling, sliding, and compression.