The cause of this disease is that benzyl alcohol was used as a diluent for penicillin when I was a child. Benzyl alcohol used for anti-inflammatory needle will be less painful, because benzyl alcohol has anesthetic effect on muscles, but it was later proved that it not only anesthetizes but also corrodes muscles. If the hip muscles are corroded repeatedly, it will cause muscle membrane adhesion and finally form contracture zone.

If you use physical torsion or how to exercise, the contracture zone will have a bad influence on bones and joints or healthy muscles. Recall that when we squat down, there will be a feeling that something like a tendon slides from the back of the hip joint to the front, and it is accompanied by a sliding sound. Surgery will relax these contracture muscles, remove their restrictions on joint activities and return to normal. However, the contracture band will not be completely cut off, which is also the reason why the contracture band is "relaxed" during gluteal muscle contracture surgery. Like a very, very elastic rubber band, if we don't completely cut it into 1/2, then we can pull it out. Moreover, the contracture zone can not be completely removed, so it is necessary to leave a part for us to walk. The doctor's job is to judge how many contracture zones each of us can maintain before we can return to normal and avoid being lax and excessive.

As for your hip depression, it is inevitable, especially the suture effect of traditional surgery. The relaxed contracture zone will inevitably leave a gap in the middle to form a depression. If you walk normally, don't consider this problem.

If you still want to have surgery, you must go to a tertiary hospital, preferably a hospital with strong orthopedics ~ ~