Flashcards in Arches of the foot Deck (14):
What does the shape of the arches allow?
act like springs:
1. weight bearing (of body)
2. shock absorbing during locomotion
3. flexibility for walking & running
Where are the 2 longitudinal arches in the foot formed?
medial & lateral arches
formed between tarsal bones & proximal end of the metatarsals
What is the medial arch formed of?
calcaneus, talus, navicular, 3 cuneiforms, first 3 (medial) metatarsal bones
What is the medial arch supported by in terms of muscles?
tibialis anterior, tibialis posterior, fibularis longus, flexor digitorum longus, flexor hallucis longus and intrinsic plantar foot muscles, (calcaneal tendon)
provide dynamic support
What are the ligaments that support the medial arch?
short and long plantar ligaments, plantar calcaneonavicular ligament, (medial ligament of the ankle joint - 'deltoid' ligaments)
and plantar APONEUROSIS
How do the bones support the medial longitudinal arch?
the shape of the bones of the arch
Describe the lateral arch
flatter than medial longitudinal arch
lies on ground in standing position (lateral - flatter)
Which bones form the lateral longitudinal arch?
calcaneus, cuboid, 4th & 5th metatarsal bones
Which ligaments support the lateral longitudinal arch?
plantar ligaments (esp. long plantar, short plantar and plantar calcaneonavicular ligament)
Which muscles support the lateral longitudinal arch?
fibularis longus, flexor digitorum longus, flexor hallucis longus, intrinsic plantar foot muscles
Where is the transverse arch located and which bones is it formed by?
in coronal plane of the foot
formed by metatarsal bases, cuboid and cuneiforms
Which muscles support the transverse arch?
fibularis longus and tibialis posterior
Which ligaments support the transverse arch?
plantar ligaments (long & short plantar, plantar calcaneonavicular), deep transverse metatarsal ligaments