Synovial Joint Process

The labrum has two basic functions that take place in both the hip and the shoulder. The first function of the labrum is to excavate the socket so that the ball stays secure. Ligaments are small structures that keep the ball in the socket; these are the harnesses that reach and attach each of the bones. These small structures hold the bones closer together. The other way the ball is kept inside and attached to the socket is the labrum. The labrum is a thick tissue or type of cartilage that is attached to the rim of the socket and essentially forms a

There are many more terms and concepts in throwing a baseball then the wind-up, cocking, acceleration, and the follow through. There is also the stride, your pelvis, rotation, deceleration, force, gravity, resistance and speed. (Maranowski). Within the shoulder, there are three major bones used. They are the clavicle, humerus, and the scapula. Another major component of the shoulder while throwing is the rotator cuff. The rotator cuff is made up of four small muscles which are the subscapularis, supraspinatus, infraspinatus, and the teres minor. The main responsibility of the rotator cuff is for the stability of the shoulder joint. It holds the humeral head in the glenoid socket during early abduction while throwing. (" biomechanics of," ).

Millions of people across the United States suffer from either Bursitis or a rotator cuff injury every year. Although sometimes the two can be misconceived, they are very different in all actuality. Bursitis is the inflammation or irritation of the bursa. A bursa is a fluid-filled sac used as a bumper near the joints to reduce friction. There are many bursae located in your body, some of which being in the hip, shoulder, wrist, and elbow. However, a rotator cuff injury only affects the shoulder area of the body. The “rotator cuff” is composed of the supraspinatus, infraspinatus, subscapularis, and teres minor muscles. There is only one main way to be diagnosed with Bursitis and it happens when you overuse a joint in sports or on the job. You can put the bursa under pressure for a long time, thus causing the bursa to become inflamed.

For the human joint anatomy project, our group decided to research and construct the elbow joint. The following is a report and summary of the project including roles taken, challenges faced, solutions derived, and ultimately, contribution and experiences of both partners.

Joints are the connecting points where two bones meet. They allow the human body to be flexible. Muscles are also necessary for movement. They pulls bones are allow them to move. Tendons attach muscles to bones while ligaments attach bones to bones. The central nervous system stimulates muscles to contract when they are stimulated by “messages”, or impulses, that are sent from motor nerves and the bursae are fluid filled sacs between joints that provide protection

Connected to the scapula is the shoulder: the deltoid anterior, deltoid lateral, pectoralis major and bicep brachi contract to create forward flexion at one of these shoulder joints. Parallel the deltoid, infraspinatus and teresminor are contracted to cause extension of the shoulder joint. Travelling along each arm the triceps brachi and aneconeus muscles are contracted to extend the elbow joint. The radio-carpal joint in extension uses the extensor carpi radialis longus, abductor pollicis and flexor carpi radialis to perform the neutral positioning of the radio-carpel and extension of the phalanges

DOI: 5/5/2000. Patient is a 34-year-old male employee who sustained a right shoulder injury while framing the column and wall fell on his shoulder. As per OMNI notes, the patient sustained a right shoulder injury. He underwent arthroscopic posterior and posteroinferior labral repair, subacromial decompression and distal clavicle resection of the right shoulder on 5/4/2015 and revision of the arthroscopic posterior and posteroinferior labral repair of the right shoulder with subacromial bursectomy on 11/02/15.

The Humerus makes up the arm and is a long bone (Marieb 160). "At the distal end of the humerus is the medial trochlea which looks somewhat like a spool, and the lateral ball-like capitulum" (Marieb 161). These two processes join together with the radius and ulna which are the two bones or the forearm (Marieb 161). The ulna processes are allowed to move freely during flexion and extension of the elbow due to the coronoid fossa and the olecranon fossa (Marieb 161). The coronoid fossa is "a depression" (Marieb 161) above the trochlea anteriorly and the olecranon fossa is on the posterior surface (Marieb 161). These two depressions allow the "ulna to move when the elbow is extended and bent" (Marieb

The shoulder is a ball and socket joint which allows it a flexion and extension motion.

The hip, one of the largest major weight-bearing joints in the body. It’s where the thigh bone also known as the femur meets three other bones known as the pelvic bone. These bones create a ball and socket joint which is when a ball shaped bone (femur) articulates with cup shape cavity of another bone (pelvic bone). A ball and socket joint is also characterized as synovial joint. Synovial joints are more complex joints that are held together by a capsule of dense connective tissue and filled with synovial fluid that lubricates the joints. The joint capsule which is composed of large ligaments, tendons, and other muscles keeps the hip from dislocating. The head of the femur and the socket of the hip bone (acetabulum) is covered with articular

The shoulder and hip are considered ball and socket joints. In the shoulder, the “ball” of the humerus fits into the “socket” formed by the shoulder blade. In the hip, the “ball’ of the femur fits into the “socket” of the pelvis. These joints allow the motion in the body. Also, the shoulder joint and the joint are both synovial joints (diarthroses), meaning they both consists of:

It is the largest bone in the arm. It is also the only bone in the upper arm. The humerus is connected to many parts such as muscles that help move the shoulder and the elbow. The humerus is so important to many types of actives such as texting, eating and cocktail shaking. The humerus is at the proximal end. The end of the humerus is smooth and round. Because it forms a ball it is connected to the shoulder to form a ball and socket joint. The glenoid cavity of the scapula acting at the socket because of this the humerus can move n full circles and rotate at the shoulder joint. The humerus is a long bone we know this because it is longer than it is wide. It is also a hollow bone which is supported inside by small layers of spongy bone also

Synovitis is inflammation of the synovium joint lining within the knee. Most symptoms are short lived and tend to move to different places of overuse, joined by severe pain. Lack of swelling and tenderness could also be a significant sign for synovitis, partially due to the injury being caused by overuse. Diagnosis is determined by a rheumatologist who deciphers the difference of pain by location. Recovery is generally based on rest and anti-inflammatory medications (HSS,

One of the most common injuries among athletes is found to be in the shoulder region, which entails the shoulder joint and the shoulder girdle. The shoulder joint, is commonly referred to as the glenohumeral joint (ball and socket joint consisting of the ball/end of the humerus bone that sits in the socket of the shoulder). The overall shoulder region also entails the shoulder girdle (the scapula/shoulder blade), and clavicle (collar bone). The shoulder joint is predominantly vulnerable to injury because the large range of movement that it is capable of and the relatively small joint surfaces. In turn, this means that the joint itself is much less stable and therefore requires a number of sturdy muscles, ligaments, and tendons and to maintain the stability.

The shoulder joint is extremely flexible compared to the rest of the joints in the body. This flexibility is partly due to the fact that it is a ball and socket joint. By being a ball and socket joint it means that it is capable of circumduction, angular, and rotational movement. It allows one’s arm to move up, down, to the right, to the left, and in a circle. Because it has a large range of movement, it is unstable and easily damaged. To make up for this, it has many ligaments and tendons to keep it in place. In addition, it also has the glenoid labrum which deepens the shallow glenoid cavity and makes it more stable.