Background: Frozen shoulder is often associated with other diseases like hypothyroidism. However, this relationship remains uncertain. Our aim in this study is to assess the prevalence of hypothyroidism in frozen shoulder patients.
Methodology: In this retrospective study, we reviewed the medical records of patients diagnosed with frozen shoulder from 1/1/2017 to 1/1/2020 in the hospital and documented any patient who met the imaging criteria, lab results, and physical examination note.
Results: A total of 91 confirmed frozen shoulder cases were included in this study (prevalence rate, 13.2%). Fifty-one cases (56.0%) were male. Among hypothyroid cases, the commonest age group was 5160 years, and 41.7% cases were from this age group. Female gender was significantly associated with hypothyroidism among frozen shoulder cases (p-value 0.020). As predicted, a significantly higher Thyroid stimulating hormone (TSH) level was observed among hypothyroid cases than their counterparts (p-value < 0.001).
Conclusion: Frozen shoulder is a permanent severe limitation of the range of motion. It may occur more with people with a certain health condition such as thyroid diseases or following an injury or immobilization of the shoulder joint. Hereafter, we confirmed that hypothyroidism is significantly associated with frozen shoulder patients.
Key words: Frozen shoulder, adhesive capsulitis, shoulder, hypothyroidism, thyroid diseases
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