Pivot Joint
This type of joint is also known as a rotary joint and allows only one type of movement, rotational movement which occurs when bone rotates on or around another bone, an example of this type of joint includes the joint of the first and second vertebrae of the neck that allows the head to move back and forth, the joint in the wrist which allows the palm to be turned facing upwards and facing downwards, this type of joint is incredibly important because it allows the bones to move freely while rotating, without this type of joint we wouldn’t be able move our head or our hands and wrists. The bones in a pivot joint are connected by ligaments to allow flexible side to side movement. Different types of bones are connected in a joint, for example, irregular bones like the vertebra and the skull is connected in a pivot joint.
Hinge Joint
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The surfaces of the joint are organised to allow only back and forth motion such as bending and straightening. This type of joint can be found between your upper arm and your lower arm, in the elbow. This type of joint is incredibly important as it allows an up and down movement, without this type of joint, we wouldn’t be able to move our arm up and down. Muscles are attached to this type of joint by tendons to allow it to contract and relax and be able to move the bone within this joint. Ligaments attach the bones in a hinge joint together, for example, the humerus and the tibia are joined by ligaments but they also have antagonist muscle pairs attached to them by tendons which allow the bone to move by contraction and relaxation of the muscles. This type of joint mainly includes long bones as it’s necessary for movement in the skeletal
In the frontal plane, the movement shows the depression of scapula. The joint involved in this part of the pirouette is the scapulothoracic joint. This motion can be analyzed in the frontal plane or the sagittal due to the movements of the shoulders with the trunk (Hall, 2011). In the transverse plane it is the external rotation of the hip that helps form a pirouette. The muscles used to perform the rotation are the gluteus minimus, piriformis, superior gemellus, inferior gemellus, obturator internus, obturator externus, and quadratus femoris (Hall, 2011). These muscles are used to help the leg move to the correct position for a pirouette.
The knee is a hinge-type, diarthrotic, or freely moveable joint. Also referred to as a synovial joint, the 2 articulating ends of bone are encased in a capsule that lubricates the joint with synovial fluid to reduce friction.
Supporting the upper limb body weight; allow us to maintain a correct anatomical posture. There are all together total 33 vertebrae
The elbow is held in place by very strong, fibrous tissues (ligaments) that connect your
The pivot joint is a freely movable joint that allows only rotary movement around a single axis. The moving bone rotates with a ring that is formed from a second bone and joining ligament. The pivot joint is exampled by the joint between the atlas and the axis directly under the skull, which lets the head turn side to side. Pivot joints also provide for the twisting movement of the bones of the forearm such as the radius and ulna against the upper arm, for a movement like unscrewing a jar.
In this position the athlete stands upright with their feet slightly separated and parallel, the arms hanging easily at the sides with the palms facing the body. When standing still muscles co-contract to stabilise the body and prevent it from falling or flopping due to the effects of gravity. The key joints that stabilize the body are the ankle joint, knee joint, hip joint, vertebral column and the shoulder girdle.
The shoulder joint allows the arm to move in many directions, which makes it the most mobile joint in the human body. With this mobility comes some drawbacks, since the joint is unstable and becomes dislocated easily.
This describes muscles on one side of a joint relaxing to accommodate contraction on the other side of that joint.
The elbow is a hinge joint, moving in only one dimension (flex or extend), making it relatively simple from an architectural and functional standpoint. The humerus bone in the upper arm connects to the two bones of the forearm by means of various connective tissues. For a pitcher, one of the most important of these connections is the unlar collaterial ligament (UCL). The UCL offers much of the stability that is necessary for the elbow to withstand the extreme stresses created by throwing a baseball at high velocity. Its function is to stabilize against lateral forces and to keep the arm connected across the joint space.
The elbow is more complex than you would imagine. It includes structures such as muscles, bones, tendons, and bursa and nerve innervations. All of these components must work together so that your elbow functio...
Ligaments stabilize and support the body's joints. They act almost as a shock absorber to stop the two ends of the bones grinding together. For example, ligaments in the knee connect the upper leg with the lower leg, enabling people to walk and run.
* Joints near the arthritic joint may be affected, they may become move movable than normal, or they may also affected if the hand is not well taken care of.
Pivot joints are found in your neck and your elbow and only allows rotation whereas a hinge joint can be found in your elbow, knee and ankle and allows flexion and extension. Both joints are uni-axial but are made up of different bones, pivot joints being made up of irregular bones and hinge joints are made up of long bones. They are both different to look at for example, a pivot joint is a ring around a peg where as a hinge joint is a cylinder in a troth. Both joints can be used I sport for example a pivot joint can be used when turning your head to breath in swimming and a hinge joint can be used for kicking a ball in football this shows us that hinge joints allow larger ranges of movement whereas pivot joints only allow small movements like turning your head.
Flange joint is one of the methods of pipe joints. Pipe flanges are used at places where piping, instruments, valves, equipment etc. are required to be dismantle for maintenance. Flange joint is an assembly of three different components: Flanges, Gaskets & Bolting brought together in a proper method by some external source. Special measures shall be considered in selection and application of each component of the joint to achieve acceptable leak tightness. The flanges are normally made of forging only in few cases it can be fabricated from plates.