Frozen Shoulder
Introduction
- Poorly understood condition causing substantial pain and movement restriction.
- Can be differentiated into primary (idiopathic) and secondary onset.
- Secondary FS can be intrinsic, extrinsic, or systemic.
- Inflammation and capsular fibrosis are likely due to metabolic syndrome and chronic low-grade inflammation.
- The disease process progresses from inflammation to capsular fibrosis
Epidemiology
- Primary FS affects 2 to 5.3% of the general population.
- Secondary FS prevalence increases with diabetes mellitus and thyroid disease.
- Most cases occur between ages 40 and 65, slightly higher prevalence in women.
- Contralateral occurrence within five years was reported in 17% of cases.
- Non-dominant side may be affected more often.
Clinical Picture
- Shoulder pain radiating into the upper arm, severe and diffuse.
- Onset is sudden or gradual with progressive pain and stiffness.
- Pain is described as constant, severe, and exacerbated by movement.
Examination
- Equal loss of active and passive range of motion. External rotation loss of at least 50% of 30° and 25% loss in at least 2 other planes compared to the other side
- Medical history includes diabetes, cardiovascular disease, smoking, and high cholesterol.
- Active muscle guarding may contribute to loss of range of motion. Test Pseudo-Frozen Shoulder with the Coracoid Pain Test
Treatment
- Tailored physiotherapeutic treatment based on reactivity degree.
- Steroid injections are effective for pain, function, and self-reported success in the early stages.
- Hydro-distension injections provide short-term benefits in pain and range of motion.
- Manipulation under anesthesia and arthroscopic capsular release are last-resort options with limited evidence and potential complications.
References
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Vermeulen E, Schuitemaker R, Hekman K, van der Burg D, Struyf F. Fysiotherapie bij Frozen Shoulder: aanbevelingen vanuit SchouderNetwerken Nederland. FysioPraxis: vakinformatie voor de fysiotherapeut in de praktijk.-Houten, 1992, currens. 2017;26(7):13-7.
Xiao, R. C., Walley, K. C., DeAngelis, J. P., & Ramappa, A. J. (2017). Corticosteroid injections for adhesive capsulitis: a review. Clinical Journal of Sport Medicine, 27(3), 308-320.