Types of Fractures
Unit 3A Terminology
Unit 3B Terminology
Types of Synovial Joints
Types of Joint Movement
100
A fracture in which at least one end of the broken bone tears through the skin; carries a high risk of infection
What is an open fracture?
100
Originates within the sheet-like layers of connective tissue. Found in the flat bones of the skull
What is intramembranous bones?
100
Bind bone to bone in the skull
What is a suture?
100
Rounded portion of bone is enclosed within a ring formed partially by articulation with another bone and partially by a ligament, bone rotates with in ring.
What is a pivot joint?
100
The upward movement of structures of the body
What is elevation?
200
A fracture in which the skin remains intact.
What is a closed fracture?
200
A cell that secretes the matrix for bone formation
What is an osteoblast?
200
Immovable joint
What is a synarthrotic?
200
An elbow is an example of this kind of synovial joint.
What is a hinge joint?
200
Lateral rotation of forearm (rotating hand laterally so that is in anatomical position)
What is supination?
300
Several breaks result in many small pieces between two large segments.
What is a comminuted fracture?
300
The process of blood cell formation. Begins in the yolk sac during embryonic development.
What is hematopoiesis?
300
A ligamentous sac that surrounds the articular cavity of a freely movable joint, is attached to the bones, completely encloses the joint, and is composed of an outer fibrous membrane and an inner synovial membrane.
What is a joint capsule?
300
Both articulating surfaces have a saddle shape-concave in one direction and convex in other.
What is a saddle joint?
300
Foot moves up toward leg
What is dorsiflexion?
400
This fracture occurs at an angle that is not 90 degrees.
What is an oblique fracture?
400
A large multinucleate bone cell that absorbs bone tissue during growth and healing
What is an osteoclast?.
400
Inner layer of articular capsule; encases joint cavity which is filled with synovial fluid.
What is the synovial membrane?
400
A joint with a rounded head of one bone fits into concave articulation of adjacent bone.
What is a ball and socket joint?
400
Movement in which proximal end of appendage stays stationary, but distal end has wide range of motion making a cone shape
What is circumduction?
500
A partial fracture in which only one side of bone is broken.
What is a greenstick fracture?
500
Is a hyaline cartilage plate in the metaphysis at each end of a long bone. The plate is found in children and adolescents.
What is the epiphyseal plate?
500
Similar to hyaline cartilage; lines bones on ends as protection for inside joint cavity; has no pericardium
What is the articular cartilage?
500
The knuckle of the hand is an example of this kind of joint.
What is the condyloid/ellipsoid joint?
500
Movement towards medial plane.
What is adduction?