Fig. 260. Fig. 261.
Correction of Angle of Mouth.
Another method is to cut the two flaps as in [Fig. 262].
These flaps are made of the entire thickness of the cheek tissue, and are slid down into position and sutured or approximated, as in [Fig. 263].
Fig. 262. Fig. 263.
Correction of Extensive Defect at Angle of Mouth.
As a rule the excised mucous membrane subsequently prevents a free opening of the mouth added to by the contraction of the flaps themselves.
To overcome this a flap of skin with its epidermal surface turned inward is sutured into the defect, as will be shown presently, or a pedunculated flap formed at the wound surface before its transplantation into the defect may be covered with skin grafts (Thiersch).