If there is definite visible damage on your MRI, or your doctor strongly suspects labral pathology, then you ought to consider arthroscopic surgery. Painful lesions of the labrum will usually persist in an athlete in overhand sports.

On the other hand, multidirectional instability can exist without a tear, and is usually managed adequately with rehab alone. Arthroscopic techniques exist to tighten a loose capsule, but the results are not as predictable as when you have a definite tear to repair.

Shoulder instability occurs in several ways; unidirectional anterior and posterior are the most common. Subtle asymptomatic multidirectional laxity is also common, meaning many have shoulders that are a little loose, but not a big problem. Multidirectional instability that is truly symptomatic, is not so common, in my opinion. It is often associated with generalized ligamentous laxity, as manifest by the ability to touch your thumb to your forearm, or hyperextend your fingers. Most surgeons wisely try not to operate on these conditions, as the results are unpredictable. Collagen fibres of loose ligaments tend to stretch out too easily after surgery, causing recurrence of the underlying instability, frequently with more pain.

Distinguishing between these conditions takes a well trained Orthopaedic Surgeon.

Take care, and best of luck...