You should go to the orthopedic department of the hospital to find a senior doctor for an examination, and if necessary, an X-ray examination can basically determine the cause.

Possible situation 1: hyperosteogeny, solution: if it doesn't hurt, you can temporarily stop the operation, observe for yourself, and see a doctor if there is any problem;

Possibility 2: Skeletal dislocation (dislocation), the lighter one can be treated without treatment, and it should be treated according to the doctor's advice if necessary.

As for the possibility of cyst, I suggest going to the hospital as soon as possible. I don't think bone tumor is likely, hehe.

I wish you an early health!