Microvascular free flaps for reconstruction

The development of microvascular free flaps has significantly affected our reconstructive principles. In many situations, it has become the procedure of choice. Thus, defects caused by trauma, tumour resection, infection and irradiation or related to congenital anomalies can be adequately covered by microvascular free flaps. Free flaps have also evolved from skin to tissues such as muscle, bone, toes, and other composite flaps, and the factors affecting their choice include patient's needs, defect characteristics, donor site morbidity, and surgeon's experience. Recent advances in surgical techniques, thrombolytic drugs for flap salvage, prefabrication technique, synergistic use of tissue expander and osteogenesis by callus distraction will contribute to the future development of microvascular free flap.published_or_final_versio

Antibacterial properties of Cu-ZrO2 thin films prepared via aerosol assisted chemical vapour deposition

© 2015 The Royal Society of Chemistry. The antibacterial properties of a Cu-ZrO2 film grown via aerosol assisted chemical vapour deposition are presented. The composite film showed high activity against E. coli (Gram-negative) and S. aureus (Gram-positive) bacteria with 5 log10 (E. coli) and 4 log10 (S. aureus) decrease in viable bacteria achieved within 20 and 60 minutes respectively. These results were comparable to a pure copper film that was prepared under the same conditions. The composite film was characterized for material properties using a range of techniques including X-ray photoemission and X-ray diffraction

Lateral tibial condyle reconstruction by pedicled vascularized fibular head graft: Long-term result

The technique of pedicled vascularized fibular graft for lateral tibial condyle reconstruction after en bloc resection of aggressive giant cell tumours was described by SP Chow et al. Early follow-up of two patients was presented in 1986. We present the 25 years follow-up of one patient with a literature review of alternative present day treatment options. The patient maintained community ambulant status despite developing late stage osteoarthritis. Although this procedure is performed rarely, it remains an alternative to the more sophisticated treatment options making it a useful method in centres with limited facilities and expertise. © 2011 The Author(s).published_or_final_versio

Occupational repetitive strain injuries in Hong Kong

OBJECTIVE: To review currently available evidence on the epidemiology and management of occupational repetitive strain injuries with particular reference to Hong Kong. DATA SOURCES AND STUDY SELECTION: Medline, PubMed and Cochrane Library searches of local and internationally published English journals from 1990 to 2007 regarding repetitive strain injuries. DATA EXTRACTION: All articles involving occupational repetitive strain injuries in Hong Kong were included in this review. DATA SYNTHESIS: There were 16 articles contributing data on the impact of repetitive strain injuries both in Hong Kong and around the world. There were seven articles dealing with the problem of computer station set-ups and methods for improving the workstation environments. CONCLUSION: Currently there were significant data on the impact of repetitive strain injuries in Hong Kong. The data took the form of compensation claims, days away from work, and cost of medical consultations. Other articles described proper workplace adjustments to help prevent repetitive strain injuries. However, there were no figures in the current literature showing the impact of these adjustments in reducing the incidence of repetitive strain injuries. More research could help to delineate the relationship between different types of interventions and occupational repetitive strain injuries.published_or_final_versio

Dynamic treatment for proximal phalangeal fracture of the hand

PURPOSE: To assess a protected mobilisation programme (dynamic treatment) for proximal phalangeal fracture of the hand, irrespective of the geometry. METHODS: Clinical and radiological results of 32 consecutive patients with proximal phalangeal fracture of the hand treated from January 2001 to February 2007 were evaluated. Our supervised rehabilitation programme was strictly followed to gain full range of movement of the proximal interphalangeal joint and to prevent the development of an extension lag contracture. Patients were followed up for a mean period of 15 (range, 13-16) months. Results were evaluated using the Belsky classification. RESULTS: The results were excellent in 72% of the patients, good in 22%, and poor in 6%. Some patients defaulted follow-up, which made long-term assessment difficult. The poor results may have been related to patient non-compliance or default from rehabilitation. Many good results upgraded to excellent following further rehabilitation. CONCLUSION: Skeletal stability, not rigidity, is necessary for functional movements of the hand. Proximal phalangeal fractures can be effectively treated by closed methods, using the stabilising effect of soft tissues (zancolli complex-metacarpophalangeal retention apparatus) and external devices (metacarpophalangeal block splint), thus enabling bone healing and movement recovery at the same time.published_or_final_versio

Crystal Violet-Impregnated Slippery Surface to Prevent Bacterial Contamination of Surfaces

Biofilms which are self-organized communities can contaminate various infrastructural systems. Preventing bacterial adhesion on surfaces is more desirable than cleaning or disinfection of bacteria-contaminated surfaces. In this study, a 24 h bacterial adhesion test showed that “slippery surfaces” had increased resistance to bacterial contamination compared to polydimethylsiloxane and superhydrophobic surfaces. However, it did not completely inhibit bacterial attachment, indicating that it only retards surface contamination by bacteria. Hence, a strategy of killing bacteria with minimal bacterial adhesion was developed. A crystal violet-impregnated slippery (CVIS) surface with bactericidal and slippery features was produced through a simple dipping process. The CVIS surface had a very smooth and lubricated surface that was highly repellent to water and blood contamination. Bactericidal tests against Escherichia coli and Staphylococcus aureus showed that the CVIS surface exhibited bactericidal activity in dark and also showed significantly enhanced bactericidal activity (>3 log reduction in bacteria number) in white light

Socioeconomic Gradient in Childhood Obesity and Hypertension: A Multilevel Population-Based Study in a Chinese Community

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Review and comparison of shearography and active thermography for nondestructive evaluation

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Overprotection and the psychological states of cerebral palsy patients and their caretakers in Hong Kong: A preliminary report

Objective: To examine the relation between perceived overprotection and the psychological states of cerebral palsy patients and their primary caretakers in Hong Kong. Design: Cross-sectional survey, in which data of 14 pairs of cerebral palsy patients and their caretakers were analysed. Setting: Duchess of Kent Children's Hospital, Hong Kong. Participants: Cerebral palsy patients and their primary caretakers in Hong Kong. Main outcome measures: Perceived overprotection and psychological states. Results: Nearly two thirds of the 14 patients (mean age of 15 years) and 86% of the 14 primary caretakers (mean age of 47 years) perceived various levels of overprotection. For both patients and caretakers, perceived overprotection was positively associated with anxiety and unhappiness. The patients' and caretakers' psychological states and perception of overprotection were not related to the actual motor ability of the patients. Perceived overprotection of the patients was not related to that of the caretakers. Conclusion: Caretakers should be mindful that a well-meaning move may have undesirable consequences. More support and child-rearing education should be considered for caretakers.published_or_final_versio