Abstract：
BACKGROUND: There is a shortage of well-designed self-controlled studies evaluating hand biomechanics following ulnar forearm flap (UFF) harvest. This study was conducted to evaluate objective and subjective functional outcomes of the donor\'s hand following UFF harvest.
METHODS: All patients undergoing UFF were included for analysis. Grip strength, wrist movement, forearm supination and pronation, pinch strengths, sensation to light touch and temperature, and hand dexterity were assessed preoperatively and at 1, 3, and 6 months postoperatively. In addition, DASH score (disabilities of the arm, shoulder, and hand score) and Patient and Observer Scar Assessment Scale (POSAS) were analyzed.
RESULTS: A total of 18 patients were enrolled. A significant reduction in grip strength for donor\'s hand was observed between preoperative and postoperative 1 and 3 months (mean difference = 14 kg, 7.38 kg, respectively, p = 0.000 for all). A similar trend was observed for pinch strength and range of motion (p < 0.05). Three months after surgery, there is still a significant reduction in tip pinch, tripod pinch, wrist extension, and supination. All biomechanics outcomes returned to preoperative baseline at 6 months after surgery. No patients suffered significant changes in sensation to light touch, temperature, and numbness by 6 months. There was a significant increase in DASH score by 3.37 points 6 months after operation (p = 0.000). The POSAS score indicates satisfaction with the appearance of the donor site.
CONCLUSIONS: UFF is a safe and reliable option for oral cavity reconstruction with minimum donor site morbidities, mainly when cosmesis is paramount. Furthermore, objective hand biomechanics ultimately returns to its preoperative state within 6 months after surgery.
METHODS: All patients undergoing UFF were included for analysis. Grip strength, wrist movement, forearm supination and pronation, pinch strengths, sensation to light touch and temperature, and hand dexterity were assessed preoperatively and at 1, 3, and 6 months postoperatively. In addition, DASH score (disabilities of the arm, shoulder, and hand score) and Patient and Observer Scar Assessment Scale (POSAS) were analyzed.
RESULTS: A total of 18 patients were enrolled. A significant reduction in grip strength for donor\'s hand was observed between preoperative and postoperative 1 and 3 months (mean difference = 14 kg, 7.38 kg, respectively, p = 0.000 for all). A similar trend was observed for pinch strength and range of motion (p < 0.05). Three months after surgery, there is still a significant reduction in tip pinch, tripod pinch, wrist extension, and supination. All biomechanics outcomes returned to preoperative baseline at 6 months after surgery. No patients suffered significant changes in sensation to light touch, temperature, and numbness by 6 months. There was a significant increase in DASH score by 3.37 points 6 months after operation (p = 0.000). The POSAS score indicates satisfaction with the appearance of the donor site.
CONCLUSIONS: UFF is a safe and reliable option for oral cavity reconstruction with minimum donor site morbidities, mainly when cosmesis is paramount. Furthermore, objective hand biomechanics ultimately returns to its preoperative state within 6 months after surgery.
摘要：
背景：缺乏精心设计的自我对照研究来评估尺骨前臂皮瓣（UFF）收获后的手生物力学。进行这项研究是为了评估UFF收获后供体手的客观和主观功能结果。
方法：纳入所有接受UFF的患者进行分析。握力,手腕运动,前臂旋后和旋前，捏合强度,对轻微触摸和温度的感觉，在术前和术后1,3和6个月评估手的灵活性.此外,DASH得分(手臂残疾，肩膀,和手部评分）以及患者和观察者疤痕评估量表（POSAS）进行分析。
结果：共纳入18例患者。在术前和术后1和3个月之间观察到供体手的握力显著降低(平均差异=14kg，7.38kg,分别,全部p=0.000)。对于捏合强度和运动范围观察到类似的趋势(p<0.05)。手术三个月后,尖端捏仍然显着减少，三脚架捏,手腕延伸，和仰卧起坐.所有生物力学结果在术后6个月恢复到术前基线。没有患者对轻触的感觉发生明显变化，温度,和麻木6个月。术后6个月DASH评分显著增加3.37分(p=0.000)。POSAS评分表示对供体部位外观的满意度。
结论：UFF是一种安全可靠的口腔重建选择，供体部位发病率最低，主要是当宇宙是最重要的。此外，目的手部生物力学最终在术后6个月内恢复到术前状态。
方法：纳入所有接受UFF的患者进行分析。握力,手腕运动,前臂旋后和旋前，捏合强度,对轻微触摸和温度的感觉，在术前和术后1,3和6个月评估手的灵活性.此外,DASH得分(手臂残疾，肩膀,和手部评分）以及患者和观察者疤痕评估量表（POSAS）进行分析。
结果：共纳入18例患者。在术前和术后1和3个月之间观察到供体手的握力显著降低(平均差异=14kg，7.38kg,分别,全部p=0.000)。对于捏合强度和运动范围观察到类似的趋势(p<0.05)。手术三个月后,尖端捏仍然显着减少，三脚架捏,手腕延伸，和仰卧起坐.所有生物力学结果在术后6个月恢复到术前基线。没有患者对轻触的感觉发生明显变化，温度,和麻木6个月。术后6个月DASH评分显著增加3.37分(p=0.000)。POSAS评分表示对供体部位外观的满意度。
结论：UFF是一种安全可靠的口腔重建选择，供体部位发病率最低，主要是当宇宙是最重要的。此外，目的手部生物力学最终在术后6个月内恢复到术前状态。
