What is the structure of a hinge joint?

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.

Where is a hinge joint found in the body?

Hinge joints are formed between two or more bones where the bones can only move along one axis to flex or extend. The simplest hinge joints in the body are the interphalangeal joints found between the phalanges of the fingers and toes.

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)

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). The knee is the largest hinge joint in the human body.

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 the movement of the hinge joint?

Types of Synovial JointJoint TypeMovement at jointStructureHingeFlexion/ExtensionHinge jointPivotRotation of one bone around anotherPivot JointBall and SocketFlexion/Extension/Adduction/ Abduction/Internal & External RotationBall and socket jointSaddleFlexion/Extension/Adduction/ Abduction/CircumductionSaddle joint

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.

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.

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 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.

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.

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…

What type of joint is the knee?

The knee is a modified hinge joint, a type of synovial joint, which is composed of three functional compartments: the patellofemoral articulation, consisting of the patella, or “kneecap”, and the patellar groove on the front of the femur through which it slides; and the medial and lateral tibiofemoral articulations

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.

What is an example of a saddle joint?

A saddle joint is a synovial joint where one of the bones forming the joint is shaped like a saddle with the other bone resting on it like a rider on a horse. 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.

How do joints form?

Formation. Joints result from brittle fracture of a rock body or layer as the result of tensile stresses. The presence of the first set strongly affects the stress orientation in the rock layer, often causing subsequent sets to form at a high angle, often 90°, to the first set.

What is an example of a pivot joint?

Pivot joints consist of the rounded end of one bone fitting into a ring formed by the other bone. This structure allows rotational movement, as the rounded bone moves around its own axis. An example of a pivot joint is the joint of the first and second vertebrae of the neck that allows the head to move back and forth.

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.

Where is the fixed joint located?

Some of your joints, like those in your skull, are fixed and don’t allow any movement. The bones in your skull are held together with fibrous connective tissue. Other joints, such as those between the vertebrae in your spine, which are connected to each other by pads of cartilage, can only move a small amount.

What is the bone that has the highest occurrence of breaking?

As it turns out, the clavicle, also known as the collar bone, located between your shoulder and the front of the neck, is the bone which is most likely to get broken in the human body. The clavicles can be easily fractured by impacts to the shoulder, from the force of falling on outstretched arms, and by a direct hit.

What is the elbow joint called?

The elbow is a relatively simple hinge joint which only allows flexion and extension. The elbow joint occurs at the junction the humerus or upper arm bone, the ulna which is the larger of the two forearm bones and the radius bone.

Leave a Comment