Where two bones meet or link‚ it is called a joint or an articulation. Joints can be classified according to their structure and by the types of movement they allow. The body has more than 300 different joints. In the body there are three types of joints... Moveable/Synovial joints – Moveable joints allow for maximum movement. Moveable or synovial joints are normally found in the limbs‚ as we use these parts more than anything. Ligaments help to provide the stability of the bones‚ also the muscles
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The Shoulder Joint The glenohumeral joint‚ or as it is more commonly referred to the shoulder joint ‚ is one of the most flexible and unstable joints in the body. As a ball and socket joint the shoulder allows circular motion and hinge movement. The rounded head or ‘ball’ of the humerus rests in the shallow dish shaped cavity or ‘socket’ created by the glenoid fossa of the scapula. This allows for a wide range of motion around several axes. There are two main bones that make up the shoulder
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A joint is defined as a fracture in a rock between the sides of which there is no observable relative movement. They are present is most consolidated rocks of igneous‚ metamorphic and sedimentary origin. Joints may form as a result of either diastrophism or contraction. Description: (i) A series of parallel joints is called a ’joint set’. (ii) Two or more joint sets intersecting each other produce a ’joint system’. (iii) Two sets of joints nearly at right angles to one another‚ produced by the
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Pivot joint: A rounded portion of a bone is enclosed within a ring formed partially by the articulation with another bone and partially by a ligament . The bone rotates within this ring. Since the rotation is around a single axis‚ pivot joints are functionally classified as a uniaxial diarthrosis type of joint. An example of a pivot joint is the atlantoaxial joint‚ found between the C1 (atlas) and C2 (axis) vertebrae. Here‚ the upward projecting dens of the axis articulates with the inner aspect
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SYNOVIAL JOINTS Torie Shultz‚ Noelle Henniger‚ Chris Scanlon Synovial Joint Freely moveable (diarthroic) Most complex Consists of: Articular cartilage Joint capsule Synovial membrane which secrets synovial fluid Ligaments Bursae Menisci Articular Cartilage Hyaline cartilage covers the bones surface is known as articular cartilage Resists wear and minimizes friction Subchondral plate- bone beneath articular cartilage that contains elastic cancellous bone Absorbs shock‚ protects from stress by
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Kinesiology Introduction: The word comes from the Greek words kinesis (movement) and kinein (to move). Kinesiology‚ also known as human kinetics‚ is the scientific study of human movement. Kinesiology addresses physiological‚ mechanical‚ and psychological mechanisms. Applications of kinesiology to human health include: biomechanics and orthopedics‚ strength & conditioning‚ sport psychology‚ rehabilitation‚ such as physical and occupational therapy‚ as well as sport and exercise. Kinesiology is
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Joints and Movements The Joints Definition: A joint (articulation) is point of contact between bones or between bone and cartilage. Joint Classifications Joints are classified by: The degree of movement they allow The structure of the joint The three types of joints that we will look at are: 1. Fibrous joints 2. Cartilaginous joints 3. Synovial joints Fibrous Joints These joints are also called "fixed" or "immoveable" joints‚ because they do not move. These joints have no joint cavity
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Shoulder Joint Anatomy Shoulder joint is a complex multi-dimension joint in the human body‚ also known as the “ball-and-socket”. The fact behind the label of this joint that it’s very mobile and it can be easily injured. For example‚ people can suffer instability of the glenohumeral joint by posture‚ sports‚ or normal due to aging. Shoulder joint has multiple bones‚ ligaments‚ tendons and muscles to maintain equilibrium. The bones are scapula‚ humerus‚ clavicle and sternum. Moreover‚ these bones
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Temporomandibular joint (TMJ) is the hinge joint that connects the lower jaw mandible to the temporal bone of the skull ‚ which is immediately in front of the ear on each side of your head . The joints are flexible‚ allowing the jaw to move smoothly up and down and side to side and enabling you to talk‚ chew ‚ and yawn . Muscles attached to surround the jaw joint control the position and movement of the jaw . A treatment method for the temporomandibular joint (TMJ) is aimed to clarif
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TMJ is a very unfortunate joint disorder‚ which can cause many different symptoms. TMJ technically stands for temporomandibular joint syndrome. It is also sometimes referred to as a disorder‚ rather than a syndrome. The joints specifically affected by TMJ are critical for your jaw to move‚ and also connect the lower jaw to the skull. While normal‚ everyday aches and pains are common‚ it is not normal to experience chronic pain and suffering. This usually means that there is an underlying problem
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