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© HEB KS3 Science By Dr H E Bloomfield JOINTS
© HEB A joint is anywhere in the skeleton where two or more bones meet.
© HEB There are two main types of joint - immovable and movable.
© HEB Immovable Joints
© HEB Movable Joints
© HEB Types of Movable Joint (1) Hinge Joints These allow movement in ONE direction only Examples Elbow, knee, fingers, toes
© HEB Types of Movable Joint (2) Ball and Socket Joints These allow movement in ALL directions Examples Hip, shoulder
© HEB Structure of a Movable Joint Ligaments hold the bones together and prevent dislocation Did you know? If someone’s ligaments are loose, we say they are double-jointed
© HEB Structure of a Movable Joint The ends of the bone are covered in smooth slippery cartilage to reduce friction and stop them wearing away
© HEB Structure of a Movable Joint Synovial fluid inside the joint lubricates it and also reduces friction
© HEB A Typical Hinge Joint
© HEB A Typical Hinge Joint Bone Bone Smooth slippery cartilage to stop bones rubbing Fluid to lubricate joint and reduce friction Strong ligament to hold bones together and prevent dislocation
Replacement Hip Joints
© HEB Replacement Hip Joints X Rays
© HEB Arthritis in Knees
© HEB Replacement Knee Joints
© HEB Replacement Knee Joints
© HEB Hands with Arthritis
© HEB Hands Deformed by Arthritis
© HEB Hand Joint Replacements
© HEB THE END
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