Hello and welcome to the Zero to Finals podcast.

My name is Tom and in this episode I'm going to be talking to you about shoulder dislocation.

And you can find written notes on this topic at zero to finals.com slash shoulder dislocation

or in the orthopaedic section of the zero to finals surgery book.

So let's get straight into it.

Shoulder dislocation is where the ball of the shoulder or the head of the humorous comes

entirely out of the socket, which is the glenoid cavity of the scapula.

Subluxation refers to a partial dislocation of the shoulder.

The ball does not fully come out of the socket and naturally returns back into place shortly afterwards.

More than 90% of shoulder dislocations are anterior dislocations.

This is where the head of the humorous moves anteriorly or forward in relation to the glenoid cavity.

This can occur when the arm is forced backwards or posteriorly whilst the shoulder is abducted and extended.

Picture somebody reaching out and trying to grab a heavy rock as it's travelling towards them.

Posterior dislocations are typically associated with electric shocks and seizures.

A time tip for you, exam questions might challenge you to distinguish between anterior

and posterior dislocations. The answer is almost certainly an anterior dislocation unless the

patient has had a seizure or an electric shock. Let's talk about the damage that can be associated with

a dislocated shoulder.

The glenoid labrum surrounds the glenoid cavity.

The labrum is a rim of cartilage that creates a deeper socket for the head of the humerus to fit into.

When the shoulder dislocates, the labrum can tear along one of the edges.

Bancart lesions are tears to the anterior portion of the labrum.

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