Hey mate! By reading that ChatGPT summary, it sounds like you’ve got a cracker of a supraspinatus tear. The supraspinatus’ friend and co-conspirator, the infraspinatus, is affected as well but to a lesser degree.
These are two of the most often injured muscles of the rotator cuff, and their actions are as follows:
- Supraspinatus: lifts the arms up, particularly for the first 30 degrees of motion
- Infraspinatus: externally rotates the shoulder, resists forward “sliding” (anterior shear) of the shoulder
Functionally, these muscles coordinate with all the other big and small muscles between the elbow and ribcage to help your shoulder move smooth and strong. The supraspinatus is particularly active whenever the shoulder is moving upwards and/or internally rotated. The infraspinatus is particularly active during pressing motions.
Regarding the injury itself:
You have a fairly large tear through the tendon of the supraspinatus that also affects the infraspinatus tendon. This is made possible through the unique anatomy of the rotator cuff. Unlike other muscles like the hamstrings, quads and pecs, the cuff muscles don’t really have distinct tendons. Instead, the tendons of all the rotator cuff muscles sort of fuse together into a “sock” which wraps around the entirety of the “ball” of the shoulder. This is how your supraspinatus tendon tear is also an infraspinatus tendon tear.
The “retraction” that report mentions can also be explained by the sock analogy. Once you put a hole in a sock, the tension through the fabric will start to widen the hole. A similar thing happens to the rotator cuff, particularly with older tears.
Regarding outcomes:
Because the structure of the rotator cuff tendons are very complex, expected recovery varies a lot, somewhat regardless to the size of the tear itself. For example, location of the tear relative to a structure called the “rotator cable” can be a predictive factor of recovery. Other considerations are the size of the tear (yours is large, but by no means the largest), the presence of retraction, your age, previous activity, current strength, occupational demands.
On a population level, outcomes between rehab and surgery are similar for rotator cuff tears. However, the problem with population data is that multiple people with different tears, anatomy, strength and demands all get lumped together. Unfortunately, without more information (and time) it can be pretty tricky to know whether or not you’re a surgical or non-surgical candidate.
Your best bet will be to follow the advice of your physio exactly, raise any and all questions with them wherever possible, and give conservative management an honest go for at least 3 months.
Hope that helps!
EDIT: Regarding clicking and popping - these symptoms (called “crepitus” in medical jargon) are expected with your style of injury. They don’t necessarily indicate worse injuries or outcomes, and are unlikely to get much better for a while (if at all, to be honest). The crepitus usually improves as the strength and control in your shoulders improve, but may “lag behind” improvements in strength and pain