There are many conditions that cause toe flexion, and the methods of correction are different for different causes, as follows: 1. If the toe flexion is caused by tenosynovitis, consider that the tendon of the toe is stuck due to tendon sheath hyperplasia, and therefore the toe flexion deformity and toe popping sound will occur. Therefore, the tendon sheath can be loosened through the use of a small needle knife, or surgery can be used to completely remove the hyperplastic tendon sheath and restore the extension and flexion function of the toe. 2, if the toe bend is caused by a bunion, to correct the bunion deformity, you can bunion braces, or surgery can be performed, when the bunion is corrected, the deformity of the second and third toe, that is, the flexion deformity can also be corrected.