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Classification of synovial joints

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Classification of synovial joints

  1. 1. Classification of synovial joints Sr.no Type of joints Types of articular surface Movements Examples a.. Plane / Gliiding Flat/ / plane Gliding/ translation in various direction • Intercarpal • intertarsal • B/w articular process of vertebrae • Zygoprophyseal • Costovertebral • Costotransverse • 2nd -5th carpometacarpal • Sacroiliac • Proximal tibiofibiolar • Tarso metatarsal b. Uniaxial joints: 1.Hinge joints Pulley shaped with strong collateral ligaments Permitted in one plane around a transverse axis  Fexion extension • Elbow joints • Ankle joints • Interphalangeal joints 2.. Pivot joints Central bony pivot surrounded by an osteo ligamentus ring Permitted in one plane around a vertical axis  Rotation • Superior and inmferior • Radioulnar joints • Median atlantoaxial joints c. 1. condylar joints Two distinct condyles convex male surface fitting into reciprocally on concave female surface(condyles) In one plane mainely around transverse axis but partly in another plane (rotation) around vertical axis(flex.ext limited rotation) • Knee joint • TMJ 2. Elipsoid Oval convex male surface fitting into an elliptical concave female surface. • Free movement permitted around both axses. • Flex. Ext. around transverse axis • Abduction adduction around antero post axis • Combination produces Circumduction • Wrist joints • Metacarpophalangeal joint • Atlantooccipital joint • Meta tarsophalengeal joint d. Multiaxial 1.Saddle joint Reciprocally concavocovex • Flexion, ext, Abd, Add, and some rotation around a 3rd axis which cannot occur independently. • 1st carpometacarpal sternoclavicular calcaneocuboid. 2.Ball and socket Globular head (male) fitting into a • Flexion, ext, Abd, Add • Shouldr joit
  2. 2. cup shaped socket (female surface) Circumduction and rotation (med + lat.) in indefinite no. of axes • Hip joint • Talocalcaneonavicular joint – Cartilaginous • Primary cartilaginous/ synchondrosis / Hyaline cartilage joints – Hyaline cartilage plate b/w articular surfaces – Immovable and strong – Temporary à cartilage ossifies à Synostosis – E.g. » Joint b/w epiphysis and diaphysis of growing long bones » Spheno-occipital joints » First chondrosternal joint » Costochondral joint • Secondary cartilaginous/symphysis / Fibrocartilaginous – Articular surfaces are covered by thin layer of Hyaline cartilage – United by a disk of fibrocartilage – Permanent – Typical feature : present in median plane of body N.B: Symphysis menti is a misnomer – limited movement

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