Hill–Sachs lesion

When you do a REM massage, do you, since you're a very quantitative person and we talk about patellar instability, you love doing measurements.

Do you measure the Hill Sachs lesions or do you just kind of wing it?

I do.

I think, you know, a lot of the studies, they show that, you know, certain locations like that, you know, the randomized trial that you just brought up, you know, they found like certain locations seem to be worse.

It's the length of it that's also really important.

So when you do these measurements.

Have you been measuring either like the depth of the Hill Sachs lesion or how long it is kind of from north-south or do you still go east-west?

Um, more East West, but I think also location and like Albert Lynn from Pittsburgh, he's another, you know, shoulder instability research.

This is where the biomechanics become truly fascinating and where many historical failures can be explained.

For years, the orthopedic community treated a Hill-Sachs lesion as an isolated variable.

Just to clarify, the Hill-Sachs being the impaction fracture on the posterior superior aspect of the humeral head?

Right.

Caused when the head violently strikes the anterior glenoid rim during a dislocation.

They termed this the track.

Through their measurements, they calculated that the width of this intact glenoid track is approximately 83% of the total native glenoid width.

So if I'm a surgeon trying to calculate the glenoid track in a clinical setting, how do I actually use that 83%? How do I deduct the glenoid defect from the intact track width to assess the danger of a specific Hill-Sachs lesion?