Unformatted text preview: 1. Muscular Arrangement; o Muscles cross joints and, often, when they shorten, they provide good joint support by pulling one bone into the other at the joint (causing joint compression). Consider the line of action of each muscle as it pulls on the bone…. examples - Shoulder - subscapularis, supraspinatus, infraspinatus, teres minor. Knee - quadriceps and hamstrings. 1. Fascia and skin o provide a capsule to hold the joint structure together 1. Surface tension (negative pressure) o Congruent bone surfaces which are covered in synovial fluid strongly resist being pulled apart because of the surface tension of the fluid o especially in the hip joint - the ball is held in the socket by surface tension and atmospheric pressure...
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- Spring '10
- joints, Synovial joint, ball and socket joint, joint stability