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A shoulder dislocation usually occurs as a result of force to a joint. The bone is pushed out of the socket, which may cause damage to the surrounding ligaments, tendons, and nerves.
Reviewed ByReview Date: 08/14/2011
Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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When refering to the body what is dislocation?
Dislocation usually means that a joint has popped out of place. For example, a dislocated shoulder means the ball of your shoulder has come out of the socket
What is a fracture dislocation?
Normally your bones are kept together at the ends by muscles and joints. If you get injured you might dislocate a shoulder, meaning that your two bones meeting at a joint get slightly separated. As a result your shoulder looks crazy, it hurts and you can barely move it.A dislocation is when a joint comes out of the space that is is supposed to occupy, like a dislocated shoulder or hip.
Why is the shoulder apt to become dislocated?
The shoulder joint is inherently unstable due to its large range of motion and shallow socket, making it more prone to dislocation. Activities that involve forceful impact or extreme range of motion can easily cause the shoulder to dislocate, particularly in individuals with loose ligaments or a history of shoulder dislocations.
Can you dislocate a muscle?
No, a dislocation only occurs when a joint is separated from other bones that were attached to it. When you dislocate your shoulder the ball end of your humerus is outside of your shoulder's socket.
Which joint has sacrificed stability to provide freedom of movement?
The shoulder joint has sacrificed stability to provide freedom of movement. It is a ball-and-socket joint that allows for a wide range of motion but is more prone to dislocation and instability compared to other joints in the body.
What ligaments assist in stabilization of the shoulder joint?
The ligaments that assist in stabilization of the shoulder joint are the glenohumeral ligaments, the coracohumeral ligament, and the transverse humeral ligament. These ligaments help to keep the shoulder joint in place during movement and prevent excessive motion that could lead to dislocation.
What has the author Herbert Frederick Moseley written?
Herbert Frederick Moseley has written: 'Recurrent dislocation of the shoulder' -- subject(s): Shoulder joint, Dislocation 'An atlas of muscoloskeletal exposures' -- subject(s): Anatomy, Surgical and topographical, Musculoskeletal system, Surgical and topographical Anatomy
What is the angle of which muscle prevents the humeral head from sliding upward out of the joint as the arm is raised?
Shoulder joint is highly mobile joint. The head of the humerus is to large as compared to the cavity on scapula. Still the dislocation of the joint is very uncommon. You have four muscles attached around the head of the humerus. Subscapularis, supraspinatus, infraspinatus and teres minor. These muscles keep the head of the humerus tightly opposed to scapula regardless of the position of the arm. This prevents the dislocation of the shoulder joint.
What is the most common type of dislocation?
Hip joint dislocation
What is pseudosubluxation of the humerus?
Pseudosubluxation of the humerus is a term used to describe the appearance of joint displacement at the shoulder in children, often due to ligament laxity and the anatomy of the developing shoulder joint. It is a normal finding in children under the age of 8 and does not represent true joint dislocation. It is important to differentiate between pseudosubluxation and true dislocation to avoid unnecessary treatment.
What are the signs end symptoms of dislocation?
A visibly deformed or out of place shoulder swelling discoloration (bruising) intensive pain inability to move joint
Is the labrum part of the shoulder jount?
Yes, the labrum is a ring of cartilage that lines the rim of the shoulder socket, contributing to the stability of the shoulder joint. It helps to deepen the socket and provide a cushion for the head of the humerus (upper arm bone) to move within the joint.
