ANAT30007 Lecture Notes - Lecture 22: Abductor Digiti Minimi Muscle Of Hand, Extensor Digitorum Brevis Muscle, Lumbricals Of The Hand

• School: University of Melbourne
• Department: Anatomy and Neuroscience
• Course: ANAT30007
• Professor: Varsha Pilbrow

Document Summary

When standing, 1. 2 x body weight on feet, when walking 2 x body weight on feet and when jumping, 5 x body weight on feet. This means your feet take on a lot of compressive force so there are mechanisms to help with it muscles, tendons, ligaments and fascia. However most important mechanism is arches of feet distribute weight throughout feet and ankles up legs (tibia = weight-bearing, not fibula) Tarsal bones arranged in 3 rows: (l m: calcaneus (heel bone) and talus make up hind foot, cuboid and navicular, lateral, intermediate and medial cuneiforms. Also have metatarsals, phalanges and two tiny sesamoid bones/bony projections off distal end of 1st metatarsal. Superior aspect has 3 articular surfaces for talus attachment (posterior, middle and anterior) as well as calcaneal sulcus between all three. Posterior aspect has 1 articular surface for cuboid attachment. Lateral aspect has calcaneal tuberosity where calcaneal/a(cid:272)hilles(cid:859) te(cid:374)do(cid:374) atta(cid:272)hes a(cid:374)d also peroneal tubercle (fibularis longus/brevis tendon travels through)