Clinical application of mandibular osteomuscular flap pedicled with temporalis to repair maxillary bone defect / 中华整形外科杂志

<p><b>OBJECTIVE</b>To evaluate the clinical effect of mandibular osteomuscular flap pedicled with temporalis to repair maxillary defect.</p><p><b>METHODS</b>From March 2008 to May 2010, ten cases of maxillary defects resulted from malignant tumor resection were treated with mandibular osteomuscular flap pedicled with temporalis. Ten cases of malignant tumor included six cases of Squamous cell carcinoma,one case of duct carcinoma, osteosarcoma, chondrosarcoma and malignant melanoma. One case was repaired by mandibular osteomuscular flap only, nine cases were repaired by mandibular osteomuscular flaps combined with other soft tissue flaps.</p><p><b>RESULTS</b>All the 10 mandibular osteomuscular flaps survived completely with no complication. The patients were followed up for 12 to 36 months, with an average of 18 months. Satisfactory appearance and complete functional restoration were achieved except for one case of chondrosarcoma recurrence.</p><p><b>CONCLUSIONS</b>The mandibular osteomuscular flap pedicled with temporalis is safe and easily performed with less complication. It is an ideal method for repairing the maxillary defect.</p>

Anatomic study of mandibular bone flap pedicled with temporal muscle for midface bone defect / 中华整形外科杂志

<p><b>OBJECTIVE</b>To study the anatomy of mandibular bone flap pedicled with temporal muscle for midfacial bone defects.</p><p><b>METHODS</b>The shape and blood supply of the temporal muscle and mandibular ramus, as well as their relationship, were observed and measured in 30 sides of adult head specimens.</p><p><b>RESULTS</b>The temporal muscle has a fan-shaped main portion, then is scattered into three bundles as anterolateral, anteromedial, posterior bundles, which end respectively at anterior border of ramus, the temporal ridge and posterior portion of coronoid process. Then the muscle goes downward until it reaches the distal side of the third medial surface molar and attaches the 3/4 of medial surface of anterior portion of ramus. The blood supply of temporal muscle includes the medial temporal artery with external diameter of (0.76 +/- 0.20) mm, the anterior deep temporal arteries with external diameter of (0.79 +/- 0.21) mm, posterior deep temporal arteries with external diameter of (0.98 +/- 0.64) mm, the accessory deep temporal artery formed by many little branches. The anterior part of ramus is supplied by the periosteal arteries and the bony perforator of the deep temporal arteries. Rectangular ramus of mandible was divided into anterior portion and posterior portion by the line linking the lowest point of mandibular notch, mandibular foramen and mandibular canal. Anterior portion can supply a bone flap with a size of (46.67 +/- 6.85) mm x (17.98 +/- 2.64) mm x (11.49 +/- 0.99) mm.</p><p><b>CONCLUSIONS</b>The mandibular bone flap pedicled with temporal muscle has a reliable blood supply and abundant bone volume. It is feasible to design a mandibular bone flap pedicled with temporal muscle for midfacial bone defect.</p>

Research on Zhejiang blood information network and management system / 中国实验血液学杂志

This research was aimed to develop the first level blood information centralized database and real time communication network at a province area in China. Multiple technology like local area network database separate operation, real time data concentration and distribution mechanism, allopatric backup, and optical fiber virtual private network (VPN) were used. As a result, the blood information centralized database and management system were successfully constructed, which covers all the Zhejiang province, and the real time exchange of blood data was realised. In conclusion, its implementation promote volunteer blood donation and ensure the blood safety in Zhejiang, especially strengthen the quick response to public health emergency. This project lays the first stone of centralized test and allotment among blood banks in Zhejiang, and can serve as a reference of contemporary blood bank information systems in China.

Retrospective study on HIV infection among blood donors in Zhejiang Province over 11-year period (1993 - 2004) / 中国实验血液学杂志

To determine HIV prevalence among blood donors in Zhejiang Province from 1993 to 2004 years, almost 6,600, 000 blood donors information were collected and analyzed. Every sample was screened for markers of HIV-1 and HIV-2 by using commercially available ELISA kits twice, and Western blot for confirmation if positive or suspicious result appeared. The results indicated that during the study period, prevalence rate of HIV infection was 0.85/1000 donors (0.085%), with the rising tendency from 1:600000 in 1995 to 1:37500 in 2004. The prevalence of HIV infection in Zhejiang donors was significantly lower than that in donors of other provinces, prevalence of HIV infection in male was higher than that in female. In recent years, the prevalence of HIV in blood donors was obviously increased, but the difference among various populations began to reduce. It is concluded that in a low HIV prevalence area like Zhejiang province where no obvious AIDS occurred, risk for the expansion of the HIV epidemic was on the increase. Screening procedure used in transfusion services nowaday is reliable, but a comprehensive approach is required to make the blood more safe.