Besides the muscles, tendons and ligaments, there are 3 main bones in a human shoulder which are as follows:
The communication between all of the above bones develops 3 types of joints, but the term ‘shoulder joint’ usually refers to one joint type and that is ‘Glenohumeral Joint’. This is a major type of joint and the second most important type which you can include in this category known as Acromioclavicular Joint.
When we talk about the human shoulder joint, it refers to the area of the body where the humerus (the long bone in the arm of humans extending from shoulder to the elbow) is attached to scapula. It is not just a joint or muscle, but it is actually a group of various structures in joint region.
There are 3 main types of joints which are as follows
I) Glenohumeral joint
II) Acromioclavicular Joint
III) Sternoclavicular joint
The shoulder joints have cartilages which can be divided into 2 types because of their different functions.
1) Articular Cartilage
This is the first type of cartilage found at the ending points of the bones. They are white in color and facilitates the bones to move and glide over each other. Articular cartilage may also be affected with arthritis and in this case the joint becomes stiff and painful.
2) Labrum Cartilage
This is the second type of cartilage which is found around the joint sockets. Unlike, the articular cartilage, this type is much more stringy or inflexible.
Frozen Shoulder
In such a case, the inflammation occurs which might be quite stiff and painful. If this condition is not treated in time, its progress limits the movements.
Rheumatoid Arthritis
Rheumatoid is basically a form of arthritis which may be quite dangerous as in this condition, the immune system assaults the joints. The result of rheumatoid may come in form of pain and inflammation. Rheumatoid arthritis is fully capable to target any of the joints which also include shoulder. This is a common problem affecting all joints in body. Read this Flexoplex review to know about various joint pain supplement.
Osteoarthritis
With growing age, the ‘wear-and-tear’ arthritis develops which is quite common and the risk of osteoarthritis development also increases with the age and in this case, the pain as well as physical limitations can occur. However, there are various injuries such as the one is dislocated shoulder which can cause the development of osteoarthritis at any age.
Rotator Cuff Tear
Rotator Cuff Tear may be developed in tear which is a muscle that covers the top area of humerus. The condition may be caused by a sudden injury.
Gout
Gout is another form of arthritis in which the patient might feel pain and inflammation because of crystals that are formed in the joints. However, this is not very common for shoulder area.
Shoulder Dislocation
In this case, the humerus or some other bone found may leave their position and this abnormal activity can cause pain and prevent arm rising freely.
Labral Tear
A sudden accident or overuse might create tears in labrum which is the cartilage cuff and covers the head of humerus. However, in most of the cases, the labral tears are healed without surgical treatment.