Hamstring injuries have a high reinjury rate: close to one in three recur within a year. A complete rehab program, a gradual return to sprinting, and ongoing exercises like the Nordic hamstring exercise all help reduce that risk.

Most hamstring strains don't need imaging. An ultrasound or MRI is usually only needed ifthere are signs of a more serious tear, such as a pop at the sit bone, significant bruising, agap or bunching in the muscle, or a lot of weakness.

Avoid aggressive stretching in the first week or two. Gentle movement and early strengthening are better. As you progress, lengthening-focused strength exercises, like the Askling exercises and Romanian deadlifts, restore flexibility while also building strength.

It depends on the type and severity of the injury. A minor sprint-type strain may allow are turn to sport in a few weeks. Stretch-type injuries and tears involving the tendon often take two months or more. Pain usually settles well before the muscle is ready for full-speed running, so use strength and function [...]