[Clinical application of changeable cross-leg style sural neurovascular flap in repairing contralateral fairly large soft tissue defect on dorsum of forefoot].

Objective: To explore the effectiveness of changeable cross-leg style sural neurovascular flap in repairing contralateral fairly large soft tissue defects on dorsum of forefoot. Methods: Between June 2006 and June 2015, 12 patients with fairly large soft tissue defect on dorsum of forefoot were treated. There were 8 males and 4 females, with an average age of 35.6 years (range, 18-57 years). Defects were caused by traffic accident injury in 4 cases, machine crush injury in 3 cases, and heavy object crush injury in 3 cases, with a median disease duration of 11 days (range, 5 hours to 28 days) in the 10 cases; the defect cause was atrophic scar in 2 cases, with disease duration of 2 years and 3 years respectively. The wound size of soft tissue ranged from 6.2 cm×4.1 cm to 11.5 cm×7.4 cm; combined injuries included tendon exposure in all cases and bone exposure in 6 cases. The changeable cross-leg style sural neurovascular flaps were used to repair defects. The width and length of flap pedicle were increased. The cross-leg position was maintained with the elastic net bandage. The size of flaps was 16 cm×7 cm to 21 cm×11 cm, with a pedicle of 8-16 cm in length and 5-6 cm in width. Results: After operation, 10 flaps survived, and wound healed by first intention. Extravasated blood occurred at the flap edge in 2 cases and was cured after symptomatic treatment. No pressure sore occurred. All patients were followed up 3-24 months (mean, 7 months). The appearance and function of the affected legs were good, and the flaps had soft texture and normal color. Conclusion: Changeable cross-leg style sural neurovascular flap can achieve good effectiveness in repairing fairly large soft tissue defect on dorsum of forefoot. Some drawbacks of single cross-leg style can be avoided.

[A study of making use of computer-aided projection fringe system to measure breast dimension].

OBJECTIVE: To measure breast basic dimension by using computer-aided projection fringe system. METHODS: A system has been developed for measuring breast basic dimension based on computer-aided projection fringe measurement and programming software. Plastic manikins breast's SN-N (sternal notch to nipple distance), N-ML (nipple to midline distance), N-N (internipple distance), MBW (base width of breast) and N-IMF (nipple to inframammary fold distance) are measured with this system. At the same time, these items are also measured with routine ruler. RESULTS: This study indicate that the system has some merits: (1) non-touching measurement; (2) it is very rapid, the patient measured need hold his breath only 0.5 second, and all the time it takes is about 2.5 minutes; (3) the measurement's sensitivity is as high as to 0.6 mm, which meets the clinic requirement entirely; (4) the measurement's accuracy of the system is not significantly when comparing to the routine ruler's. CONCLUSIONS: Computer-aided projection fringe system for measuring breast basic dimension is feasible and advanced.

[Three-dimensional breast non-contact measurement].

OBJECTIVE: To develop a system for three-dimensional (3D) non-contact measurement of breast using computer-aided projection fringe measurement (CAPFM). METHODS: A system of 3D non-contact breast measurement was developed based on CAPFM and used for measurement of a plastic model mimicking human breast. RESULTS: The CAPFM system was capable of non-contact 3D measurement with rapid data collection (within 0.5 s) and measurement (no longer than -3 min). This system was highly automatic, and with software-controlled measurement, the sensitivity was as high as 0.6 mm (for linear measurement) and 1 ml (for volume measurement), to well meet the clinical requirements. The measurement results could be stored and expressed in numerical values or represented in vivid 2D figures and 3D images, which facilitated subsequent studies. CONCLUSION: The 3D non-contact breast measurement system on the basis of CAPFM can be helpful for medical assessment of the breast.