It’s interesting that Kyrie is dealing with an impingement and potential labrum tear. That’s what IT had, although the injury is drastically different in the hip than shoulder.
Isaiah’s issue was more serious than an injury to the labrum. There was an underlying deformity of the hip socket that possibly - probably - led to the labral tear. Labrums are hard enough to heal without an ill-fitting joint.
The deformity was the femoral impingement. Kyrie has one in his shoulder, although that’s not necessarily due to anything structurally deformed in the shoulder. It does involve a lot of rubbing / friction / catching of the tendons on the bone.
Isaiah’s femur was impinging the labrum because of the socket deformity. You are saying that the deformity
was the impingement, which doesn’t make sense. The surgery that he got, iirc, included shaving bone to give the femoral head a better fit.
The official diagnosis was: “ ... right femoral-acetabular impingement with labral tear“. The acetabulum is the socket of the hip joint.
That’s a different kind of impingement than Kyrie’s. Kyrie has a subacromial impingement, which is where the supraspinatus muscle is crowded up against the acromion process of the scapula.
The labrum is inside the joint; Kyrie’s injury is above the joint.