Bosworth's 1941 fluoroscopic survey of 6,061 white-collar workers established the foundational epidemiology of calcific tendinopathy of the shoulder. It determined which tendons are affected, what factors drive deposition, and which treatments reliably resolve symptoms. This remains the primary reference for prevalence, bilateral involvement, and the natural history of shoulder calcium deposits.
A patient in their 40s presents with acute, disabling shoulder pain waking them at night — you see a large calcific deposit on imaging. Before Bosworth, there was no epidemiologic foundation for this diagnosis and no data-driven treatment rationale.
This paper is why we excise rather than bake. Bosworth showed that heat was unreliable, sometimes precipitated acute attacks, and in some shoulders required 60-80 treatments over months with no durable result. Excision gave immediate, complete, permanent relief with full motion at 3 weeks.
For incidentally found large deposits, counsel patients that symptoms are not a matter of if. Only when. Bosworth's data show every large deposit becomes symptomatic before resolving. One rule to carry into every encounter: never immobilize the shoulder. Bosworth condemned it explicitly for adhesion risk, a principle that runs directly through modern calcific tendinopathy rehab protocols.
Bosworth's 1941 fluoroscopic survey of 6,061 white-collar workers established the foundational epidemiology of calcific tendinopathy of the shoulder. It determined which tendons are affected, what factors drive deposition, and which treatments reliably resolve symptoms. This remains the primary reference for prevalence, bilateral involvement, and the natural history of shoulder calcium deposits.
A patient in their 40s presents with acute, disabling shoulder pain waking them at night — you see a large calcific deposit on imaging. Before Bosworth, there was no epidemiologic foundation for this diagnosis and no data-driven treatment rationale.
This paper is why we excise rather than bake. Bosworth showed that heat was unreliable, sometimes precipitated acute attacks, and in some shoulders required 60-80 treatments over months with no durable result. Excision gave immediate, complete, permanent relief with full motion at 3 weeks.
For incidentally found large deposits, counsel patients that symptoms are not a matter of if. Only when. Bosworth's data show every large deposit becomes symptomatic before resolving. One rule to carry into every encounter: never immobilize the shoulder. Bosworth condemned it explicitly for adhesion risk, a principle that runs directly through modern calcific tendinopathy rehab protocols.