BICEPS FEMORIS

• Origin

Long head: Ischial tuberosity

Short head: Linea Aspera and Lateral supracondylar line of femur

• Insertion

Head of fibula, lateral condyle of tibia

• Agonist(s)

- Semitendinosus

- Semimembranosus

- Gluteus maximus

• Antagonist(s)

- Quadriceps femoris

• Function

Knee flexion, hip extension, hip external rotation

TRIGGER POINT(S)

• Location

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

• Pain Referral Pattern

Pain may refer to the posterior thigh and 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 hip extension and 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 biceps femoris and other thigh muscles

• Trauma or injury to the posterior thigh or knee

• Prevention Tips

• Use proper techniques and footwear during activities involving hip extension and knee flexion to avoid overloading the biceps femoris

• 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.