Which of the following is not a diahrosis ?: (A) Elbow joint, (B) Interphalangeal joint, (C) Skull sutures, (D) Hip joint
Answer is C. Ans. is 'c' i.e., Skull sutures Functional classification of joints (movement) Joints can also be classified functionally according to the type and degree of movement they allow: Synahrosis - Permits little or no mobility. Most synahrosis joints are fibrous joints (e.g., skull sutures). Amphiahrosis - Permits slight mobility. Most amphiahrosis joints are cailaginous joints (e.g., interveebral discs). Diahrosis - Freely movable. All diahrosis joints are synol joints (e.g., shoulder, hip, elbow, knee, etc.), and the terms "diahrosis" and "synol joint" are considered equivalent by Terminologia Anatomica