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Wednesday, 29 February 2012

Anterior Shoulder Dislocation


Having played a lot of Rugby since a young age, it has become a central part of my life outside of, as well as within school. Having played a couple of times for the 1st XV while in year 11 I was excited about the next season when I would be a part of the sixth form. However, towards the latter half of my U16 season I badly dislocated my right shoulder while making a tackle. The injury was one of the most frustrating things I have had to deal with, keeping me off of the pitch for the rest of the season! After much physiotherapy and recuperation I was very much looking forward to what the forthcoming season held. However, after a promising start to the season for the team unfortunately the injury reoccurred in a similar fashion but to an even worse extent. Although on the first incident the shoulder had to be put in place by the A&E team, it had only been displaced for an hour or so. This time perhaps due to the reoccurring stress on the shoulder, the A&E team were not quite so successful taking along the lines of 8 hours before I finally felt the pop I had been dreading.  Because of my personal involvement with this injury, it has become something that I have endeavoured to find out more about and so in this article I will try to briefly explain the injury as well as the rehabilitation process I am currently undergoing.

A shoulder dislocation occurs when the shoulder is wrenched upward and backward for example, while under great pressure from an external force. The force can be such as a fall or collision (as I experienced) with enough strength to displace the shoulder. The anatomy of the shoulder means that approximately 95% of shoulder dislocations occur at the lower front of the joint. There are two main parts to the shoulder; the socket of the scapula (the shoulder blade) and the humerus (the ball attached to the arm). Because of the shallowness of the socket, it makes the shoulder particularly vulnerable. For this reason the scapula is “extended” by an area of cartilage and is supported by ligaments called the joint capsule. Furthermore a group of four tendons collectively called the rotator cuff, reinforcing the shoulder joint from above in front and behind.  When the arm is moved away from the body and rotated in a certain position, the joint gives way and the humeral head is ripped away from the scapula socket. The stress on other features of the shoulder, such as ligaments in the rotator cuff, the ring of supportive cartilage and the joint capsule are torn.
Upon getting to A&E I was given medication to reduce the pain such as codeine. I was also greatly thankful for the Nitrus Oxide which was the only thing that seemed to moderately reduce the pain before morphine was administered! The dislocation is then confirmed on X-Ray in order to make sure the diagnosis is correct, while also checking for any other breaks in the neighbouring bones. The shoulder is then moved into a number of different positions, while being put under different pressures in order to relocate it. This is not a pleasant experience!

The shoulder is then usually placed in a sling which immobilizes the joint and greatly reduces the amount of movement experienced by the entire shoulder. This helps to reduce the risk of recurrent dislocations. After a number of weeks, the range of motion is then gradually increased, with strength exercises added in order to return the joint to normal function. Recurrent dislocations are common due to the damage done to the tendons and ligaments after the initial dislocation. Having suffered from two dislocations in recent past I am now awaiting shoulder surgery which will help to repair damage to the scapula joint and restore normal function.

It’s not all bad however. The injury has left me with a desire to perhaps pursue a career in orthopaedics somewhere in the future!

Sam



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