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What is the function of rota-tors cuff in case of shoulder joint?
DrAshokDeshmukh
Rota-tors cuff is formed by four muscles. 1)Subscapularis. 2)Supraspinatus.3) Infraspinatus.4) Teres minor. They ALL are inserted surrounding the head of Humerus. Head of the Humerus is four times as large as Glenoid cavity on Scapula bone, in order to allow almost all sort of movements liberally, you should have lax ligaments, witch will promote dislocation of joint and strong ligaments will restrict the movement. Now you are there ! All muscles of Rota-tor cuff ACT AS CONTRACTING LIGAMENTS and keep the head of the humerus constantly in apposition with Glenoid cavity.(Lab-rum !) in all types of shoulder joint movements and so joint is mobile and stable also. (GOD is great !)
Wiki User
∙ 11y ago
The rotator cuff is a group of muscles and tendons that surround the shoulder joint. Its main function is to stabilize the joint and assist in shoulder movements, such as lifting and rotating the arm. It also helps to keep the head of the upper arm bone (humerus) within the shallow socket of the shoulder blade (scapula).
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Is the shoulder distal to the hips?
The hip joint has a stronger labial rim combined with the ligament and capsule. The ball sits deeper in the socket than the shoulder. Shoulder joints have more range of motion (mobility) but less stability.
What would happen if the joint between your arm and shoulder was not a ball and socket joint?
If the joint between your arm and shoulder was not a ball and socket joint, you could not be able to move your arm. Ball and socket joints allow you to move in most directions. Because of this, you can move your arm up, down, side to side, front and back, and around in a circle. The ball and socket joint is one of the four major kinds of movable joints. (The four major joints are ball and socket joints, gliding joints, hinge joints, and pivotal joints in case you didn't know.)
What movements types do ball and socket joints allow?
The Ball and Socket Joint is located on top of the arm and on top of the leg.This allows full 360 degree rotation of the arm and leg.. and is also known as a 'Freely Moveable Joint'conclusion:Ball and socket joint allows full rotation.Located on top of the arm and on top of the leg.
What are the angle in extension of elbow joint?
In my particular case I am able to straighten my arm short of about 5 degrees to what it used to do and short of about 10 degrees when I try the other way that is I just miss out on being able to put my right hand on my right shoulder. I had the elbow replacement done about a year ago.
Is the costosternal joint a synovial joint?
Synovial joints allow for movement between the articulating bones (in this case the sternum and the clavicle). The articulating bones are covered in articular cartilage, which are connected with ligaments and lined with a synovial membrane. There is a fluid-filled sac between these types of joints to reduce the amount of friction with movement and the fluid inside of these sacs is called synovial fluid.
Is shoulder is superior to the elbow?
It would seem that it would be called that but when dealing with the arms and legs, the positional anatomy only involves the attachment to the body. We use proximal and distal and not inferior and superior. The point of attachment (POT) is the shoulder joint. Since the elbow is further away from the POT, is said to be distal. And the shoulder joint is proximal to the elbow. You must always use two things to compare. In this case the elbow and the shoulder.
Why is the shoulder bone more mobile and weaker than the hip joint?
In the study of anatomy and physiology, you will notice that 'form follows function'. This means that (in this case), the hip must carry the major weight of the body and doing so in a way that it will function to carry us while running, walking and doing other tasks. The shoulder does not have to carry that weight and doesn't need to be so stable. It can be more flexible. It is thought that, as we developed as hominids and then humans, that the ability to use the shoulder for throwing weapons was a major step in our development as thinking animal.
What is subacrominal bursa and subcoracoid bursa?
The subacromial and subcoracoid bursa are spaces composed of synovium membrane (which generally lines the inside of joint capsules) and synovial fluid a fluid which is found in joint and bursa and is designed to be as frictionless as possible. The subacromial bursa is located above the shoulder joint between the supraspinatus muscle and below the acromiom which comes off the spine of the scapula and may be palpated as the bony apex of the shoulder. This bursa does not communicate with the shoulder joint proper. This is not the case if there is underlying pathology however. The subcoracoid bursa is also called the subscapular bursa. It is in fact a medial continuation of the shoulder joint. In other words it is part of the shoulder joint cavity and sits underneath the coracoid process. The coracoid process is also part of the scapula and can be palpated beneath the lateral (outer part) of the clavicle.
Is the shoulder distal to the hips?
The hip joint has a stronger labial rim combined with the ligament and capsule. The ball sits deeper in the socket than the shoulder. Shoulder joints have more range of motion (mobility) but less stability.
What type of synovial joint does a rounded or pointed surface on one bone articulate with a ring formed partly by another bone and partly by a ligament?
In case of shoulder joint you have the glenoid cavity of the scapula taking part in joint formation. You have the glenoid labrum to increase the surface area of the glenoid cavity. The large head of the humerus takes part in joint formation.
What would happen if the joint between your arm and shoulder was not a ball and socket joint?
If the joint between your arm and shoulder was not a ball and socket joint, you could not be able to move your arm. Ball and socket joints allow you to move in most directions. Because of this, you can move your arm up, down, side to side, front and back, and around in a circle. The ball and socket joint is one of the four major kinds of movable joints. (The four major joints are ball and socket joints, gliding joints, hinge joints, and pivotal joints in case you didn't know.)
What is the bullet shoulder?
The bullet shoulder is the step below the ogive that fits into the mouth of the brass case.
What does it mean if a bird lands on your right shoulder?
It means that you have a right shoulder. Although if it is a shoulder-eating bird of prey, that may no longer be the case.
What is function of CPU case?
The function of cpu is alu
First aid case of joint fracture?
cast or split
What is type II acromion and mild osteophytes?
There are three variations in the shape of the acromion process in the shoulder joint. Type 2 has a curved undersurface. Osteophytes, commonly referred to as bone spurs are bony projections that form along joint margins. In this case they are not large and are not causing major problems. This question involves the rotator cuff and some problem with it. It is common as we age to see these.
What type of joint is your toes?
If I remember from anatomy...the ankle is a synovial joint (movement at the point of contact at bones) that connects the distal ends of the tibia and fibula to the proximal end of the talus bone in the foot.....distal means the most distant of 2 or more things in this case bones and proximal means towards the beginning of 2 or more things.
