Joints, particularly hinge joints like the elbow and the knee, are complex structures made up of bone, muscles, synovium, cartilage, and ligaments that are designed to bear weight and move the body through space. The knee consists of the femur (thigh bone) above, and the tibia (shin bone) and fibula below.
Furthermore, what is the hinge joint function?
A hinge joint is a common class of synovial joint that includes the ankle, elbow, and knee joints. Hinge joints are formed between two or more bones where the bones can only move along one axis to flex or extend.
What is an example of a hinge joint?
Hinge Joints in the Body. Following are some examples of hinge joints throughout the body. The elbow joint is a joint in the human body. Thus, it is called the humeroulna joint in the medical community. The humeroulnar joint is placed in between the trochlear notch of ulna and the trochlea of the humerus.
What is the definition of a hinge joint?
A hinge joint (ginglymus) is a bone joint in which the articular surfaces are molded to each other in such a manner as to permit motion only in one plane. According to one classification system they are said to be uniaxial (having one degree of freedom).
What is the difference between a dislocation and subluxation?
Dislocation – Subluxation. Dislocation (a complete disruption of the joint) and subluxation (a partial dislocation followed by relocation) can damage the ligaments, nerves, joint surfaces (cartilage), as well as the bones that make up the joint.
What is the structure of a joint?
Synovial Joints. This is the most common and movable joint type in the body. These joints (also called diarthroses) have a synovial cavity. Their bones are connected by dense irregular connective tissue that forms an articular capsule surrounding the bones’ articulating surfaces.
Is wrist a hinge joint?
TypesNameExamplePlane joints (or gliding joint)carpals of the wrist, acromioclavicular jointHinge jointselbow (between the humerus and the ulna)Pivot jointsatlanto-axial joint, proximal radioulnar joint, and distal radioulnar jointCondyloid joints (or ellipsoidal joints)wrist joint (radiocarpal joint)
Is the shoulder a hinge joint?
Examples of this form of articulation are found in the hip, where the rounded head of the femur (ball) rests in the cup-like acetabulum (socket) of the pelvis, and in the glenohumeral joint of the shoulder, where the rounded head of the humerus (ball) rests in the cup-like glenoid fossa (socket) of the shoulder blade.
Is the wrist a hinge joint?
Major gliding joints include the intervertebral joints and the bones of the wrists and ankles. (2) Hinge joints move on just one axis. The wrist joint between the radius and the carpal bones is an example of a condyloid joint. (5) A saddle joint allows for flexion, extension, and other movements, but no rotation.
Is the jaw a hinge joint?
The temporomandibular joint (TMJ) derives its name from the two bones comprising the joint. The temporal bone of cranium and the mandible fit together to form a hinge-like jaw joint. Between the two bones is an articular disc. Although the TMJ is classified as a hinge-type joint, its action is much more complex.
What terms describe the path of movement in a joint?
What terms describe the path of movement at a joint? Flexion, Extension, Dorsiflexion, Plantar flexion, Hyperextension, Abduction, Adduction, Rotation, Circumduction. Range of motion is the range through which a joint can be moved.
What is the structure of a synovial joint?
The bones of a synovial joint are surrounded by a synovial capsule, which secretes synovial fluid to lubricate and nourish the joint while acting as a shock absorber. The ends of the joint bones are covered with smooth, glass-like hyaline cartilage which reduces friction during movement.
What are the two primary movements of the ankle?
The axes of movement at these articulations are situated obliquely with reference to the standard anatomical planes. Hence, each movement is a combination of two or more primary movements. Inversion comprises supination, adduction, and plantar flexion. Eversion involves pronation, abduction, and dorsiflexion.
Is the knee joint a hinge joint?
The knee is a hinge joint, meaning it allows the leg to extend and bend in one direction. The knee is considered a mobile, or pivotal hinge joint as it also allows minimal medial and lateral rotation. The knee is a hinge joint made up of bone, cartilage, muscles, and ligaments. Knee bones.
What is a cartilaginous joint?
Anatomical terminology. Cartilaginous joints are connected entirely by cartilage (fibrocartilage or hyaline). Cartilaginous joints allow more movement between bones than a fibrous joint but less than the highly mobile synovial joint.
What is the function of the skeletal system?
The adult human skeletal system consists of 206 bones, as well as a network of tendons, ligaments and cartilage that connects them. The skeletal system performs vital functions — support, movement, protection, blood cell production, calcium storage and endocrine regulation — that enable us to survive.
What type of movement does a saddle joint allow?
The movements are as same as in the condyloid joint; that is to say, flexion, extension, adduction, abduction, and circumduction are allowed; but no axial rotation. Saddle joints are said to be biaxial, allowing movement in the sagittal and frontal planes.
Where is the saddle joint?
The bone sitting on the saddle can move in an oval shape relative to the other bone, similar to a condyloid joint. The best example of a saddle joint in the body is the carpometacarpal joint of the thumb that is formed between the trapezium bone and the first metacarpal.
What is the function of the joints?
Functions of Joints. Joints connect bones within your body, bear weight and enable you to move. They are made up of bone, muscles, synovial fluid, cartilage and ligaments. Different joints provide unique points of stability and mobility.
Where would you find a plane joint?
The plane, or arthrodial, joint has mating surfaces that are slightly curved and may be either ovoid or sellar. Only a small amount of gliding movement is found. Examples are the joints between the metacarpal bones of the hand and those between the…
Where is the gliding joint?
Many gliding joints are formed in the appendicular skeleton between the carpal bones of the wrist; between the carpals and the metacarpals of the palm; between the tarsal bones of the ankle; and between the tarsals and the metatarsals of the foot.
What is an example of a fixed joint?
The main function of the joints is to allow both movement and flexibility. Fixed joints permit stability to certain areas of the body, although they do not move. Examples of fixed joints include the joints between the bones in the skull and the joint where the radius and ulna bones meet in the lower arm.
Is the elbow a hinge joint?
The elbow joint is the synovial hinge joint between the humerus in the upper arm and the radius and ulna in the forearm which allows the forearm and hand to be moved towards and away from the body. The elbow is specific to humans and other primates.
What is a planar joint?
A plane joint (arthrodial joint, gliding joint, plane articulation) is a synovial joint which, under physiological conditions, allows only gliding movement.