The Health June 2023 | Page 17

Ligaments and muscles around the shoulder also contribute significantly towards keeping the shoulder in place

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JUNE , 2023 | THE HEALTH

17

Letting hang loose

Ligaments and muscles around the shoulder also contribute significantly towards keeping the shoulder in place

ball being the arm bone and the tee being the glenoid ( part of the scapula , aka shoulder blade ). That ’ s how unstable the joint can be .
BONE TO PICK

LET ’ S all stand up . Now , take a look at your body . With gravity at work , body parts will gravitate towards the ground . No , not that ( sic !). What I am referring to is the upper limb .

The upper limb is a fancy way of referring to the body parts from the shoulder to the fingers . The scapula or the shoulder blade , connects the arm to the body . This connection occurs via the shoulder joint .
This connection ( or lack of ) between the upper limb and the torso is a double-edged sword . On the one hand , it offers a fantastic shoulder joint range of motion . It makes the shoulder joint perhaps the most mobile in all different planes and directions .
On the other side of the sword , these features make the shoulder joint potentially unstable and the most dislocated joint in the body . The shoulder most commonly dislocates anteriorly ( to the front ) but can also dislocate backwards and downwards .
In one of my earlier articles ( doing the Macarena ), I spoke in depth about the anatomy of the shoulder joint . I will describe it briefly this time . The shoulder is a ball and socket joint . Imagine a golf ball sitting on a tee , the
DIAGNOSING SHOULDER DISLOCATIONS
However , that ’ s just the bony part . Ligaments and muscles around the shoulder also contribute significantly towards keeping the shoulder in place . Traumatic shoulder dislocation tends to occur in patients around the age of 20 , usually due to a sporting injury or an accident . The younger the patient is at the time of the first dislocation , the worst the prognosis is , as these dislocations will tend to recur . The more times it happens , the easier it will become for the dislocation to occur .
Some patients even become “ used to ” their shoulders popping out that they can even pop it right back in .
During each episode of dislocation , there will be an injury to the bony structures or soft tissue , stabilising the joint . So , the more times it happens , the more damage occurs , too , thus weakening the structures that once kept the shoulder stable . It leads to the shoulder joint popping in and out more easily in cases of recurrent dislocation .
Shoulder dislocations can be diagnosed just by assessing a patient . X-rays are still routinely done to confirm the diagnosis . Once a dislocated shoulder is detected , prompt reduction of the joint is of utmost importance . Further imaging studies like MRI and CT scans may be necessary , especially in athletes and those with multiple dislocations .
These further imaging will give the treating doctor important information on possible injury to the bony structures of the shoulder as well as the soft tissue like the labrum ( which is a piece of tissue connected to the glenoid ), ligaments and tendons .
DETERMINING THE TYPE OF SURGERY
Surgical treatment may be necessary for athletes , especially those involved in contact and collision sports and patients with multiple dislocations .
As mentioned above , bony or soft tissue components to the shoulder
could occur after a dislocation . The type of surgery your doctor recommends will be determined by this and the level of sporting activity .
In patients with an injury to the labrum , the labrum peels away from where it ’ s supposed to be on the face of the glenoid . Patients can be treated with arthroscopic ( keyhole ) surgery in such cases .
In this procedure , the labrum will be anchored back to its original position . It will recreate the “ bump ” effect that will help in preventing the shoulder from dislocating .
When significant bony injury is present , the surgery has to involve
bony work as well . Often , open surgery is needed to address these skeletal defects . A piece of bone is taken from elsewhere in the body to patch up the flaw . It will , in turn , lead to better joint stability as there will be better bone contact between the humerus head and the glenoid .
So , the next time you stroll down the park and notice your hands swinging by your sides , take a second to appreciate the joint that holds it all in place . Because if it ’ s not for the structures in the shoulder joint keeping everything tight in its place , many things might be left to hang loose . – The Health
Dr Jonas Fernandez is an Orthopaedic Surgeon at Putrajaya Hospital . He is also a member of the Malaysian Arthroscopy Society ( MAS ).