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

Heterotopic ossification in the middle finger: a case report

A case of heterotopic ossification developed after traumatic laceration of the middle finger. It is extremely rare for heterotopic ossification to locate in the finger. The diagnosis was accomplished with plain radiographs as well as with MRI and confirmatory study with histopathological microscopic examination which demonstrated nubbin of bone surrounded by fibrovascular connective tissue, and the marrow was predominantly fatty with prominent ectatic vessels and patchy mild lymphocytic infiltrate and gross appearance of partly calcified bony tissue.published_or_final_versio

Clinical application of resorbable polymers in guided bone regeneration

Conference Theme: Cell Biomaterial ReactionOpen Access JournalINTRODUCTION: Long segmental diaphyseal bone loss often results from high energy trauma like blast injury, osteomyelitis or wide excision of malignant conditions. Treatment of this long segmental diaphyseal defects remain a difficult clinical problem. In the literature, many authors have reported that bone loss more than 2.5 cm always require bone grafting. This is probably the critical size defect in human. Non-vascularized bone graft frequently fails if the defect is longer than 6-7 cm. 2.5 cm is probably the critical size defect in human and 7 cm is likely the critical size for non-vascularized bone graft. Various treatment methods are adopted currently to address this problem, including vascularized bone graft, distraction osteogenesis and massive allograft. However, all these methods are associated with …published_or_final_versio

Study of biodegradable rods in rabbit long bone model

Conference Theme: The Cell-Biomaterial InteractionWinner of the award for the best poster by a studentpublished_or_final_versio

Cases of Mycobaterium Marinum Tenosynovitis of the hand and wrist: clinical features. management and results

Selected paper for 2010 APOA-Pfizer Best Scientific Paper Award for Orthopaedic InfectionOpen Access JournaleCM XII: Implant Infection Conference Main Focus: Orthopedic and trauma related infectionsAsia Pacific Orthopaedic Association SessionINTRODUCTION: Mycobacterium marinum infections followed an unpredictable clinical course and delay in definitive diagnosis was frequently encountered. Chow et al. found that the average duration of infection before patients were seen by the Orthopaedics unit was 3.3-3.7 months.1 The initial diagnosis was commonly found to be mistaken for conditions such as rheumatoid arthritis and trigger finger which may lead to inappropriate management like steroid injections. The objective of this study was to review our experience with treatment of Mycobacterium marinum tenosynovitis of the hand and wrist and to assess for any clinical parameters that were associated with poor functional outcome and also suggest a treatment algorithm for these …published_or_final_versio

一個患有重度地中海型貧血病人因克雷白氏肺炎菌引發壞死性筋膜炎

We present a case of Klebsiella pneumoniae necrotizing fasciitis in a patient with thalassaemia major. Klebsiella sp. is known to cause severe infections in patients with thalassaemia, with high mortality rates. © 2011. 我們敍述一個患有重度地中海型貧血病人因克雷白氏肺炎菌引發壞死性筋膜炎的病例。克雷白氏菌屬已知會對地中海型貧血的病人造成嚴重的感染並有很高的死亡率。published_or_final_versio

Bone regeneration with resorbable polylactide membrane and sponge in an unstable fracture model in rabbit radius

Open Access journalConference Theme: Bone Tissue EngineeringBACKGROUND: Healing of segmental diaphyseal bone defects in animals can be enhanced by covering the defects with resorbable polylactide membranes. Based on the results of bone healing in defects 10 mm long in the rabbit radii, it was suggested that the membranes prevents muscle and soft tissue from invading the defect and maintains osteogenic cells and osteogenic substances within the space covered with membrane, thus promoting new bone formation. OBJECTIVES: 1. To investigate and …published_or_final_versionpublished_or_final_versio

Epidemiology of occupational hand injury in Hong Kong

OBJECTIVES: To study the epidemiology of occupational hand injuries and associated social and industrial factors. DESIGN. For this retrospective case series of patients with occupational hand injuries, case records were retrieved to gather data. In addition, all the subjects were interviewed by a single interviewer using a predesigned questionnaire. SETTING: Division of Hand Surgery, Department of Orthopaedics and Traumatology, Queen Mary Hospital, Hong Kong. PATIENTS: A total of 250 patients with occupational hand injuries were treated during the period from 1999 to 2001. This period was chosen to obtain 10 years of follow-up data to assess return to work and any secondary injuries. MAIN OUTCOME MEASURES: Personal particulars (gender, age, marital status, education level, length of stay in Hong Kong, type of employment, wage system, personal habits, family size, number of breadwinners, income), type of industry and mode of injury, causes of injury according to the worker, work conditions, type of injury, and treatment given. RESULTS: Two groups of workers in our study had more occupational hand injuries, namely those with less than 1 year of experience on a new job and immigrants from China. Factors associated with a large proportion of occupational hand injuries were male gender with personal risk factors (smoking and regular consumption of alcohol, long working hours), and in the case of machine operators, inadequate training and use of safety devices. CONCLUSION: Occupational hand injuries lead to loss of working hours and compensation. For prevention, the workplace should be made into a safer and work-friendly environment. Workers should also have sufficient training.published_or_final_versio