What anatomical factors should be considered when tailoring treatment for hamstring muscle strains?

Anatomically, the hamstrings function as hip extensors proximally and knee flexors distally. Strain locations matter for treatment focus. Proximal strains relate more to hip/core muscles like glutes and spinal erectors. Distal strains associate better with knee and lower leg flexibility. Biceps femoris, semitendinosus and semimembranosus also have unique features - the semis have intramuscular tendons allowing potential mid-belly strains, and biceps crosses two joints. Furthermore, prior strains can increase scar tissue and inflexibility, raising reinjury risk. This means using care with stretching and massage pressure. In the end, hamstring strains have many anatomical nuances which guide treatment personalization. Evaluating injury location, muscle involvement, heal status and secondary limitations help therapists design the best interventions.