A thigh strain or quadriceps strain is a tear in one of the quadriceps muscles at the front of the thigh. It can range from a mild discomfort to a full blown tear of most of the muscle resulting in severe pain and inability to walk.
The breakage of the stitches starts within 2 weeks of the stitching but if you want the complete stitches to disappear then the process of hydrolysis or the enzymes in our body do that in a period of 60 days and therefore it approximately takes up to 2 months for the stitches to get dissolved.
Depending on the suture, dissolving sutures may take anywhere from 5 days to 14 days to dissolve. Warm soaks and topical ointments may speed this process. To achieve the best scar appearance, non dissolving sutures should be run just under the skin from one end of the incision to the other.