SEMITENDINOSUS

• Origin

Ischial tuberosity

• Insertion

Proximal medial surface of tibia, Pes Anserinus

• Agonist(s)

- Gluteus maximus

- Adductor magnus

• Antagonist(s)

- Quadriceps femoris

• Function

Hip extension, knee flexion, hip internal rotation

TRIGGER POINT(S)

• Location

Trigger points can be found along the length of the muscle, particularly in the middle portion. 

The muscle originates from the ischial tuberosity and inserts into the upper part of the medial surface of the tibia.

• Pain Referral Pattern

Pain may refer to the posterior and medial aspect of the thigh, as well as the back of the knee.

It can cause deep, aching, or sharp pain along the back of the thigh, and may contribute to discomfort or tightness behind the knee.

• Potential Causes

• Overuse or repetitive activities involving knee flexion, such as running, jumping, or cycling

• Sudden movements or strains, especially during sports or physical activities

• Poor posture or gait mechanics

• Muscle imbalances between the semitendinosus and other thigh muscles

• Trauma or injury to the posterior thigh or knee

• Prevention Tips

• Use proper techniques and footwear during activities involving knee flexion to avoid overloading the semitendinosus

• Incorporate regular stretching and strengthening exercises for the thigh muscles

• Ensure proper warm-up and cooldown routines before and after exercise

• Gradually increase workout intensity to avoid sudden strain

• Ensure balanced strength training to avoid muscle imbalances.