Watchful waiting is as medically appropriate as physical therapy (PT) for patients with shoulder adhesive capsulitis but carries substantial cost savings, according to a study presented at the 2024 annual meeting of the American Academy of Orthopaedic Surgeons.
, said Scott D. Martin, MD, orthopedic surgeon and associate professor of orthopedic surgery at Harvard Medical School in Boston, Massachusetts, and lead author of the study.
“When you tell them [patients], ‘you’re going to have to go to therapy two times a week, and it’s going to be for a very extended period of time,’ they just look at you and you know that they don’t have money for the copay, that they’re not going to go,” Dr. Martin said.
The 31 patients who were randomly assigned to watchful waiting and the 30 who received PT in the prospective controlled trial reported similar reductions in symptoms over a year-long period. But those who received PT spent 10 times more on healthcare costs than did those in the other group.
“The findings are compelling,” said Jonathan L. Tueting, MD, an orthopedic surgeon at Rush University in Chicago. “Anytime we can save on healthcare costs for patients, it’s an advantage, as long as the outcomes are the same or better.”
Dr. Tueting typically advises both watchful waiting and PT for his patients for a 6-month period before recommending surgery unless a patient has a severely stuck shoulder.
The study took place between 2014 and 2022 at the Massachusetts General Hospital Sports Medicine Clinic. Researchers assessed the effectiveness of the two approaches using patient questionnaires, including one that asked about shoulder mobility and levels of pain.
Assessments were collected at 6 weeks, and at the 3- , 6- , and 12-month marks.
Patients in the PT group received treatment twice a week and were also given a home exercise program. Meanwhile, those in the watchful waiting group were told to use their affected shoulder as tolerated for daily activities.
Patients in both groups received a corticosteroid injection at the start of the study plus another in 6 months if they still had extremely limited shoulder movement and were encouraged to take nonsteroidal anti-inflammatory drugs for pain control.
By the end of the year, patients in both groups recovered their shoulder function almost completely and with limited pain.
Measures of pain and mobility as reported by patients improved incrementally throughout the year, with no significant differences between the two groups at any point (P > .05). No significant difference in satisfaction with their treatment regimen and outcomes was observed between the groups (P = .51), according to the researchers.
To calculate treatment value, researchers considered a wide range of costs associated with treatment, including parking fees, gas, copays, childcare, lost work time, and insurance. Watchful waiting proved to be a much better value proposition than did PT.
“Patients with frozen shoulder need to go to physical therapy a lot, if that’s what they choose, because there’s not much progress,” Dr. Martin said. “So the economic burden is huge, and that cost gets passed on to the insured.
Dr. Martin and his team are continuing to follow study participants for another year and will publish outcomes at the 2-year mark. Dr. Tueting said he looks forward to seeing those data because sometimes, the condition can take over a year to resolve.
The study was funded by the Conine Family Fund for Joint Preservation. The authors report no disclosures.
A version of this article appeared on Medscape.com.