Contents
Anatomy pictures
Muscle type
- Postural
Symptoms
- Pain or limping while walking
- Pain in buttocks, upper thigh or knee when sitting
- Sciatica or pseudo-sciatica
- Inability of complete range of motion in extension of knee
- 'Growing pains' in children
- Pelvic distortions and SI-joint dysfunction
- Tendinitis or bursitis at attachment
Videoes
Short version
Detailed version
Important functions
- Gives support to the sacroiliac joint by giving a stabilizing influence via the sacrotuberous ligament (Source 1)
Notes of clinical importance
- Releasing or relaxing a tense Hamstrings might put an unstable sacroiliac joint at risk by removing the hamstrings' protective influence (the Hamstrings stabilizes the SIJ joint) (Source 1)
- The 4 major muscles that creates the stability for the SIJ joint is the Erector Spinae, Biceps Femoris, Latissimus dorsi and Gluteus Maximus (Source 2)
Myofascial lines
Dorsal line:
- Epicranial fascia
- Rectus capitis posterior major and minor
- Sacrolumbar fascia/erector spinae
- Sacrotuberous ligament
- Hamstrings
- Gastrocnemius and soleus
- Plantar fascia
Spiral line
- Splenius capitis and cervicis
- Rhomboideus major and minor
- Serratus anterior
- External oblique, abdominal aponeurosis, linea alba
- Internal oblique
- Tensor fascia latae
- Iliotibial tract
- Tibialis anterior
- Peroneus longus
- Biceps femoris
- Sacrotuerous ligament
- Sacrolumbar fascia
- Erector spinae
Anatomy
Position
- Superficial
Origin
- Tuberositas ischiadicum (long head)
- Sacrotuberous ligament (long head)
- Lateral aspect of linea aspera (short head)
- Proximal 2/3 of linea supracondylaris (short head)
- Lateral septum intermusculare (short head)
Insertion
- Lateral side of caput fibula
- Condylus lateralis tibia
Main function
- Knee:
- Flexion
- Hip:
- Extension
- Pelvis:
- Posterior tilt
Secondary function
- Knee
- Lateral rotation
- Hip
- Adduction
- Lateral rotation
Nerve innervation
- Segmental
- L5-S2
- Peripheral
- Long head from nervus tibialis
- Short head from nervus fibularis
Arterial supply
- Inferior gluteal artery
- Deep femoral artery
- Obturator artery
- Popliteal artery
Sources
- Van Wingerden J.-P., Vleeming A., Kleinvensink G., Stoekart R.. The role of the hamstrings in pelvic and spinal function. Edinburgh: Churchill Livingstone, 1997.
- Kuchera M. Movement, stability and low back pain. Edinburgh: Churchill Livingstone, 1997.