A large Swedish clinical series characterizing primary and secondary frozen shoulder across clinical, radiographic, histologic, biochemical, and bone-metabolism methods. It asks what tissue is actually diseased in the frozen shoulder and whether manipulation under anesthesia changes the course.
When a middle-aged patient presents with a globally stiff, painful shoulder and passive elevation at or under 135° with normal radiographs, think capsular disease, not bursitis or cuff pathology. This series pinned the lesion to the fibrous capsule: fibrosis and fibroplasia on histology, retraction on arthrography and volumetry, and no intraarticular adhesions at surgery.
The practical treatment lesson is that manipulation speeds up return of motion but does not shorten the overall course, and its value is greatest in the stiffest shoulders. Reserve aggressive intervention for the truly frozen, and counsel patients that the disease is self-limiting.
The standout teaching point is post-manipulation rehab: relapse happens when the ruptured capsule heals back retracted, so intensive physiotherapy afterward is what actually shortens total duration. The near-doubled bone turnover and 50% humeral osteopenia, absent in painful-but-mobile shoulders, support a distinct active pathophysiology rather than simple disuse.
A large Swedish clinical series characterizing primary and secondary frozen shoulder across clinical, radiographic, histologic, biochemical, and bone-metabolism methods. It asks what tissue is actually diseased in the frozen shoulder and whether manipulation under anesthesia changes the course.
When a middle-aged patient presents with a globally stiff, painful shoulder and passive elevation at or under 135° with normal radiographs, think capsular disease, not bursitis or cuff pathology. This series pinned the lesion to the fibrous capsule: fibrosis and fibroplasia on histology, retraction on arthrography and volumetry, and no intraarticular adhesions at surgery.
The practical treatment lesson is that manipulation speeds up return of motion but does not shorten the overall course, and its value is greatest in the stiffest shoulders. Reserve aggressive intervention for the truly frozen, and counsel patients that the disease is self-limiting.
The standout teaching point is post-manipulation rehab: relapse happens when the ruptured capsule heals back retracted, so intensive physiotherapy afterward is what actually shortens total duration. The near-doubled bone turnover and 50% humeral osteopenia, absent in painful-but-mobile shoulders, support a distinct active pathophysiology rather than simple disuse.