1 / 17

Joints

Joints. A joint is the site of meeting of two or more bones. Joints are classified into three types (depending on the material that hold the articular bones together):. Fibrous joints. Sutures: only seen in between the skull bones and they frequently ossify with age). Syndesmosis:

alaula
Télécharger la présentation

Joints

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Joints • A joint is the site of meeting of two or more bones. • Joints are classified into three types (depending on the material that hold the articular bones together):

  2. Fibrous joints • Sutures: only seen in between the skull bones and they frequently ossify with age). • Syndesmosis: • Inferior tibiofibular joint (no movement in this joints and never ossify). • Interosseous membrane connecting bones of forearm & leg. • Gomphosis:in the joints between the teeth and jaws. Each tooth is connected to the socket by periodontal membrane.

  3. Cartilaginous joints • Primary cartilaginous: these are temporary joints, in which the bones are connected by hyaline cartilage that ossifies with age. No movement is possible. This type is seen in: • Epiphyseal plate connecting epiphysis and metaphysis. • 1st sternocostal joint between 1st costal cartilage and sternum.

  4. Cartilaginous joints • Secondary cartilaginous: the bones are connected by disc of fibrocartilage, which rarely ossifies with age. A small amount of movement is possible. These joints are seen in the joints of midline of body: • Intervertebral discs • Symphysis pubis • Manubriosternal junction

  5. Synovial joints • are held together by fibrous capsule & characterized by presence of joint cavity. Synovial joints are freely movable and represent most joints of the body. • The capsule is lined by synovial membrane that secretes lubricating fluid (synovial fluid) for the articular surfaces. • Articular ends are covered by hyaline cartilage. • The capsule is thickened in certain parts to form ligaments, which provide strength and flexibility to the joint.

  6. Synovial Joints • Allow considerable movement • Most joints that unite bones of axial and peripheral skeleton • Articular cartilage and disks • Joint cavity and capsule • Synovial membrane and fluid • Bursae

  7. Types of synovial joints

  8. Types of Movement • Angular • Flexion and Extension • Abduction and Adduction • Circular • Rotation • Circumduction Flexion and Extension

  9. Abduction and Adduction

  10. Rotation and Pronation and Supination

  11. Circumduction

  12. Special Movements • Unique to only one or two joints • Types • Elevation and Depression • Protraction and Retraction

  13. Elevation and Depression

  14. Protraction and Retraction

  15. Points to Remember • A joint or articulation is a meeting between two bones and does not necessarily imply movement • A joint can be classified according to its structure • Synovial joints are the most complex • Specific terms are used to describe the movements of joints that are freely movable. • Commonly grouped in opposing pairs that move a part of the body in relation to the anatomical position.

More Related