Search results
Results from the WOW.Com Content Network
The height of a person's arch is determined by the height of the navicular bone. Collapse of the longitudinal arches results in what is known as flat feet. [5] A person with a low longitudinal arch, or flat feet will likely stand and walk with their feet in a pronated position, where the foot everts or rolls
In addition, the plantar fascia has a critical role in normal mechanical function of the foot, contributing to the "windlass mechanism". When the toes are dorsiflexed in the propulsive phase of gait, the plantar fascia becomes tense, resulting in elevation of the longitudinal arch and shortening of the foot (see 3A).
Structure. [edit] The plantar calcaneonavicular ligamentous complex is a broad and thick band with three constituent ligaments. These connect the anterior margin of the sustentaculum tali of the calcaneus to the plantar surface of the navicular bone. [ 1 ][ 2 ] Its individual components are the: superomedial calcaneonavicular ligament.
In contrast, the lateral longitudinal arch is very low. With the cuboid serving as its keystone, it redistributes part of the weight to the calcaneus and the distal end of the fifth metatarsal. The two longitudinal arches serve as pillars for the transverse arch which run obliquely across the tarsometatarsal joints.
The sole and the longitudinal arches of the foot are supported by a thick connective tissue, the plantar fascia. The central component of this tissue extends to the supporting bones and gives two divisions–the medial component and lateral component; thus they define the boundaries of the three muscle compartments of the sole (see below).
Inferior end of lateral supracondylar line of femur; oblique popliteal ligament: Weakly assists gastrocnemius in plantarflexing ankle Soleus: Posterior aspect of head and superior quarter of posterior surface of fibula; soleal line and middle third of medial border of tibia; and tendinous arch extending between the bony attachments
That is a reason why the medial longitudinal arch of the foot is a bit higher than the lateral longitudinal arch of the foot as this ligament is a main part of it. [1] [2] The calcaneonavicular part of the bifurcated ligament extends from the dorsolateral side of calcaneus (near the tarsal sinus) to the lateral side of the navicular. [1]
The plantar arch is a circulatory anastomosis formed from: deep plantar artery, from the dorsalis pedis - a.k.a. dorsal artery of the foot. lateral plantar artery. The plantar arch supplies the underside, or sole, of the foot. The plantar arch runs from the 5th metatarsal and extends medially to the 1st metatarsal (of the big toe).