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DIARTHROTIC ARTICULATIONS Synovial Joints
What are synovial joints? Freely movable joints Contain a cavity filled with thick, slippery fluid (Synovial fluid) Found mostly in articulations of the appendicular skeleton
Articular Cartilage Covers the ends of bones Made of hyaline cartilage Reduces friction between bones Cartilage wearing away causes pain and restricted motion
Types of synovial joints: Gliding (plane) Pivot Hinge Ball and socket Elipsoid (Condyloid) Saddle
Gliding or Plane joints: Formed between 2 opposing flat surfaces Bones slide over each other
Pivot Joints: Rotation around an axis
Hinge Joints: Part of one bone fits into a convex cavity in another bone. Motion is in one plane, back and forth
Ball-and-Socket Joint A round projection on one bone (head) fits into a depression (socket) on another bone. Allows a wide range of motion Easy to dislocate
Ellipsoid (Condyloid) Joints: Modified ball and socket joints in which the head of a bone is similar in shape to a football Moves in two axes, but restricts rotational motion
Saddle Joints Made by 2 saddle-shaped surfaces at right angles to each other
THE ARTICULATION OF 3 BONES The Knee Joint
Bursa/e – Sacs filled with synovial fluid for cushioning ACL and PCL – Ligaments that connects the tibia to the femur Meniscus – crescent- shaped fibrocartilage pads that help cushion joints
The Knee A modified hinge joint Allows flexion, extension, and limited rotation
Knee dislocation – owww!
EXAMINATION OF THE KNEE JOINT Chicken Leg Dissection
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Objective 10 Name the six types of synovial joints based on the movements they.
Joints. How Joints Are Classified According to movability According to the material binding them together.
Dr Iram Tassaduq Joint in which two bones are separated by a space called a joint cavity Most are freely movable.
Joint Mechanics. Joint Classification Joints classified according to movement capabilities or structure: 1.Synarthrosis Fibrous Joint Immovable
1. SYNOVIAL JOINT Dr Iram Tassaduq Synovial Joint Joint in which two bones are separated by a space called a joint cavity Most are freely movable.
THE SKELETAL JOINTS.
Joints and their classifications
Joint the movable or fixed place or part where two bones of a skeleton join.
Joints & Movements.
Chapter 8: Joints Synovial Joints Objectives: 1) Know structures of a synovial joint 2) Know the types of synovial joints Reminders: HW due today Quiz.
Types of Joints & Ligaments and Tendons
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Objective 9 Compare and contrast the three major categories of joints. Give an.
Joints Describe and explain how different types of joints affect participation and performance in games activities by allowing specific ranges of movement.
Joints (a.k.a. Articulations). I. Introduction A.Joint 1. articulation 1. Also called an articulation 2. Defined: A joint is a point of contact between.
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