KIN-10 Lecture Notes - Lecture 17: Sternocostal Joints, Sternoclavicular Joint, Synovial Joint
Introduction to Kinesiology
Notes
Joseph Yang
Types of synovial joints
● Although all synovial joints share many characteristics in common, the shapes of the
articulating surfaces vary
○ Many types of movements are possible
○ in most joint movements, one bone remains in a fixed position while the other
moves around an axis
● 6 categories: based on type of movement
○ Plane joints
■ Articular surfaces are flat or slightly curved
■ Primarily permit back and forth and side to side movements between the
flat surfaces of bones
● They may also rotate against each other
■ Biaxial
● Many plane joints
● They permit movement in two axes
■ Axis
● A straight line around which a bone rotates (revolves) or slides
■ Triaxial
● If plane joints rotate in addition to sliding
● Permit movement in three axes
■ Ex:
● Intercarpal joints
○ Between carpal bones at the wrist
● Intertarsal joints
○ Between tarsal bones at the ankle
● Sternoclavicular joint
○ Between the manubrium of the sternum and the clavicle
● Vertebrocostal joint
○ Between the heads and tubercles of ribs and bodies and
transverse processes of thoracic vertebrae
● Acromioclavicular joints
○ Between the acromion of the scapula and the clavicle
● Sternocostal joints
○ Between the sternum and ends of the costal cartilages at the
tips of the second through seventh pairs of ribs
○ Hinge joints
■ The convex surface of one bone fits into the concave surface of another
bone
■ Produced a angular, opening and closing motion like that of a hinged door
■ Uniaxial
● Allow motion around a single axis
■ Permit only flexion and extension
Document Summary
Although all synovial joints share many characteristics in common, the shapes of the articulating surfaces vary. Many types of movements are possible in most joint movements, one bone remains in a fixed position while the other moves around an axis. 6 categories: based on type of movement. Articular surfaces are flat or slightly curved. Primarily permit back and forth and side to side movements between the flat surfaces of bones. They may also rotate against each other. A straight line around which a bone rotates (revolves) or slides. If plane joints rotate in addition to sliding. Between the manubrium of the sternum and the clavicle. Between the heads and tubercles of ribs and bodies and transverse processes of thoracic vertebrae. Between the acromion of the scapula and the clavicle. Between the sternum and ends of the costal cartilages at the tips of the second through seventh pairs of ribs.
