FOOT MUSCLES (intrinsic muscles)
- The muscles acting on the foot can be divided into extrinsic & intrinsic muscles. } = hand
* Extrinsic muscle: muscles that originate outside of a specific region and insert onto structures within that region.
* Intrinsic m: originate & insert onto the same region.
Planter Compartment:
1st layer:
"AFA"
2nd layer:
3rd layer:
"FAF"
4th layer:
FOOT FASCIA
The fascia of the leg continues down and form a thickened fascia, band of fibers that protects and organize the tendons going down to the foot. these band called Retinaculum.
- Superior Extensor Retinaculum
- Inferior Extensor Retinaculum:
form 4 canals for the tendons of the extensor muscles:
- 1st canal → tendons of tibialis anterior
- 2nd canal → Extensor Hallucis longus
- 3rd → Dorsalis Pedis art. / vein of fibular n.
- 4th → Extensor Digitorum Longus.
- 3. Flexor Retinaculum (on the medial side)
forms 4 canals:
- 1st → tendons of tibialis posterior
- 2nd → tendons of flexor digitorum longus
- 3rd → tibialis posterior art. / vein of tibial n.
- 4th → tendons of flexor hallucis longus.
- 4. Superior & inferior fibular Retinaculum (lateral side)
they contain tendons of the fibularis longus & fibularis brevis.
- Planter Aponeurosis (Planter side)