Knieflexoren

Knieflexoren is a term used in physical therapy and anatomy to describe the muscles responsible for bending the knee. These muscles are located in the posterior (back) compartment of the thigh. The primary knieflexoren are the hamstrings, which consist of three muscles: the biceps femoris, the semitendinosus, and the semimembranosus. The popliteus muscle, located behind the knee joint, also assists in knee flexion, particularly in initiating the bending movement and unlocking the knee.

The action of knee flexion is crucial for a variety of everyday activities, including walking, running, squatting, and sitting. The hamstrings originate at the ischial tuberosity (the sit bone) and insert on the tibia and fibula, the bones of the lower leg. Their contraction pulls the lower leg towards the thigh, thus bending the knee. The popliteus originates on the lateral epicondyle of the femur (thigh bone) and inserts on the posterior aspect of the tibia.

Weakness or tightness in the knieflexoren can contribute to various musculoskeletal issues, including lower back pain, hamstring strains, and imbalances in gait. Therefore, strengthening and stretching these muscles are common components of rehabilitation programs and general fitness routines. Exercises that target the knieflexoren include hamstring curls, leg presses with a focus on posterior chain engagement, and Romanian deadlifts.