Functional Rehab Academy
Biceps femoris
Muscle origin
Ischial tuberosity, sacrotuberous ligament and linea aspera of femur
Muscle insertion
Lateral aspect of the head of Fibula
Muscle function
Hip extension, knee flexion and external rotation of Tibia. Control of Fibula
Nerve innervation
L5-S2 (Lovett reactor C1)
Primary muscle type
Phasic / Type IIx (65-75%)
Myofascial lines
Superficial back line
Spiral line
Primary inhibatory muscles
Psoas major, Iliacus, Rectus femoris, Vastus medialis, Vastus lateralis, Semitendinosus, Semimembranosus, Gastrocnemius, Peroneus, Tibialis anterior, Soleus
Organ relationship (T15-L2, Sacrum, n. Vagus)
- Spleen (AK)
- Symp – T5-T9 (Celiac plexus)
- Parasymp – None (CX minimal)
- Large intestine (FA/AK)
- Symp – T10-L2 (Mesenteric and Hypogastric plexus)
- Parasymp – CX (Vagus) and S2-S4 (Sacral plexus)
- Bladder (FA)
- Symp – T10-L2 (Inferior Hypogastric plexus)
- Parasymp – S2-4 (Sacral plexus)
- Reproductive organs (FA/AK)
- Symp – T10-L2 (Inferior Hypogastric, Ovarian and Testicular plexus)
- Parasymp – S2-4 (Sacral plexus)
Functional anatomy for
Biceps femoris
Related joints
- SI joint
- Hip joint
- Knee joint
- Tibiafibular joint
Associated muscles
- Erector spinae – Connected in Superficial back line and Spiral line
- Glutes maximus – Hip extension. Posterior pull on Ilium
- Piriformis – Posterior pull on Ilium (through function of hip external rotation)
- Tensor fascia latae – Connected in spiral line
- Semimembranosus – Hip extension, knee flexion and Tibia internal rotation. Posteior pull on Ilium
- Semitendinosus – Hip extension and knee flexion. Posterior pull in Ilium
- Adductor magnus – Hip extension. Posterior pull on Ilium
- Sartorius – Internal rotation of Tibia
- Gracilis – Internal rotation of Tibia
- Popliteus – Knee flexion and internal rotation of Tibia
- Gastrocnemeus – Knee flexion. Connected in Superficial back line
- Peroneus – Control of Fibula. Connected in Spiral line
- Tibialis anterior – Control of Fibula. Connected in Spiral line
- Tibialis posterior – Control of Fibula
- Soleus – Control of Fibula
Release exercises
Corrective strength exercises
Functional Rehab Academy
Manual and practical therapy strategies that will help you find the root cause(s) and achieve faster and better results with your clients.
Functional Rehab Academy is a part of:
Move2Peak Academy ApS, Denmark
contact@functionalrehabacademy.com