目的：为前额除皱术切口位置和分离平面的选择提供解剖学依据。
Objective: to provide anatomic basis for the selection of cut position and apart plane in forehead rhytidectomy.
然后，将最优广义分离平面对的搜索问题等效变换为非线性规划问题；
Secondly, the problem of searching the optimal plane-pair is equivalent with nonlinear programming problem under some transforms.
面部除皱术的关键在于：确切的解剖分离平面和范围；确切的上提方向和提紧度。
The key points of facelift depend on the range and plane of dissecting, the direction of flap lifting and the extent of tightening.
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