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.
It depends on the type of stitch used. Non-Resorbable Stitches do not dissolve, as the name suggests. These stitches are sometimes used because there is less inflammatory response when compared to resorbable stitches. The downside is the inconvenience for the patient in having to return to have the stitches removed. Resorbable Stitches dissolve, but may take longer or slower depending on the type of stitch used.