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Semitendinosus

Muscle function: Hip extension. Knee flexion and internal rotation of Tibia. Posterior pull on Ilium

Muscle origin: Ischial tuberosity

Muscle insertion: Proximal end of tibia below medial condyle via pes anserinus

Nerve innervation: L5-S2 (Lovett reactor C1)

Organ relationship: Large intestine – T10-L2, S2-4 and Vagus

  • Large intestine
    • Sympathetic: T10-L2
    • Parasympathetic: S2-4 and Vagus

Primary inhibatory muscles: Psoas major, Iliacus, Rectus femoris, Vastus medialis, Vastus lateralis, Biceps femoris, Gastrocnemius

Semitendinosus
Client is supine with the knee flexed 80 deg. (knee joint angle is 100 deg.) and tibia in full internal rotation. Fiksate with one hand in front of the knee and apply pressure towards knee extension by pulling towards the end of the bed with the other hand.

Functional anatomy for

Semitendinosus

Related joints: SI, hip and knee joint

Myofascial lines: Superficial back line

Synergists: 

  • Erector spinae – Connected in Superficial back line
  • Glutes maximus – Hip extension. Posterior pull on Ilium
  • Piriformis – Posterior pull on Ilium (through function of hip external rotation)
  • Semimembranosus – Hip extension, knee flexion and Tibia internal rotation. Posteior pull on Ilium
  • Biceps femoris – 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

Release exercises

Corrective strength exercises

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Manual and practical therapy strategies that will help you find the root cause(s) and achieve faster and better results with your clients.

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