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.
Your surgeon may close the deeper parts of the incision with absorbable sutures, and then use more sutures on your skin, or another type of closure such as adhesive strips or surgical skin glue. Absorbable sutures vary widely in both strength and how long they will take for your body to reabsorb them. Some types dissolve as quickly as 10 days, while other types can take about six months to dissolve. The type of suture used depends on your surgeon's preference, how strong the suture needs to be to properly support the incision and how quickly your body works to dissolve the material.