Kinesiology 3336A/B Lecture Notes - Lecture 1: Deltoid Ligament, Subtalar Joint, Malleolus

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 3336A/B
• Professor: Dave Humphreys

Document Summary

37/1000 persons per year in the general population. 85% lateral, 10% syndesmosis (aka. high ankle sprain), 5% medial. Shape of bones mortise (bony ankle joint: mortise or talocrural joint, made up of: Lateral malleolus longer and more posterior than medial this adds significant stability. Most stable in neutral: capsule and ligaments, capsule. Thin and weak anteriorly and posteriorly to allow movement. Capsule has thickenings which is the ligaments stable for inversion and eversion. Stabilizes subtalar joint and limits adduction/medial tilt: most stable or tight in neutral to dorsiflexion. Ptfl strongest of all the lateral ligaments: most boney support so it is the strongest ligament. Deltoid ligament superficial limits talar abduction or lateral limit: properties of ligaments. Structure and morphology: wave or crimp across ligament. Injury can be closely correlated to the load-deformation curve. 3 phases of curve = (1) toe region (2) linear region (3) rupture region.