Frozen Shoulder: The Three Phases Nobody Explains Up Front | Form & Function MD
ORTHO / UPPER EXTREMITY

Frozen Shoulder: The Three Phases Nobody Explains Up Front

Form & Function MD · Dr. Ben, MD

Dr. Ben, MD · Orthopaedic Hand & Upper Extremity Surgeon

Adhesive capsulitis — frozen shoulder — is unusual among orthopaedic conditions in having a genuinely predictable natural history. Explaining that timeline up front, before a patient spends months anxious that something more serious is being missed, is one of the most useful things I do in that first visit.

The three phases

The freezing phase is dominated by increasing pain, often worse at night, with motion becoming progressively more limited — typically lasting two to nine months. The frozen phase is where stiffness becomes the primary problem while pain often improves — four to twelve months. The thawing phase is the gradual, often slow return of motion — five months to two years. Total course: commonly twelve to twenty-four months, sometimes longer.

The pain improving in the frozen phase isn't recovery. It's a different phase of the same process.

Who gets it, and why that matters clinically

Diabetics are affected at meaningfully higher rates and tend to have a longer, stiffer course — a pattern tied to how glucose affects collagen cross-linking in the joint capsule. Thyroid disease, prior shoulder immobilization (after surgery or a fracture), and being in the 40–60 age range are the other major risk factors. Roughly 10–20% of patients who get it in one shoulder eventually develop it in the other.

The treatment ladder
  • Physical therapy focused on gentle, consistent range-of-motion work — aggressive stretching in the freezing phase tends to backfire
  • Corticosteroid injection, most useful for pain control during the freezing phase
  • Hydrodilatation (capsular distension) for select patients plateauing in the frozen phase
  • Manipulation under anesthesia or arthroscopic capsular release for cases that plateau without adequate improvement — not a failure of conservative care, just the next appropriate step for a subset of patients

What I tell patients at diagnosis

The single most valuable thing I can offer at that first visit isn't a treatment — it's the timeline. Patients who understand they're in a defined freezing phase, and that the stiffness that follows is expected rather than a sign of worsening disease, cope with the process differently than patients left to wonder if something is being missed.

When to move faster than "wait it out"
If motion loss is severe enough to interfere with basic function — dressing, reaching a seatbelt, sleeping — or if you're diabetic with risk factors for a longer course, an earlier and more structured intervention plan is reasonable rather than a pure watch-and-wait approach.
  • Neviaser AS, Hannafin JA. Adhesive capsulitis: a review of current treatment. Am J Sports Med. 2010.
  • Kelley MJ, et al. Frozen shoulder: evidence and a proposed model guiding rehabilitation. J Orthop Sports Phys Ther. 2013.