First MTP medial capsulorrhaphy is a procedure that tightens the soft tissue on the inner side of the big toe joint. This procedure is done along with other procedures to help correct a bunion deformity. It should not be performed alone due to the likelihood of the bunion returning. Bunions involve both an altered position of the bones of the foot as well as a stretching of the soft tissue around the joint, which allows the big toe to turn inward toward the second toe. Both of these should be addressed to allow long-term correction of a bunion.
The goal of tightening the soft tissue is to restore normal tension of the previously stretched out tissue, aiding in pain relief pain by straightening the big toe. Bunion procedures also may improve the cosmetic appearance of the foot but should not be done for this reason alone.