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“An Impediment to Living Life”: Why and How Should We Measure Stiffness in Polymyalgia Rheumatica?

Fig 1

Final conceptual model of the patient experience of stiffness in PMR and aspects that may be relevant to measurement of stiffness.

This model reflects the major themes, derived from the data generated by participants with PMR, highlighting the importance of key symptoms and their impact on daily life: limiting function and a constant reminder. Pain and stiffness for many are inextricably linked, with one or other dominating their PMR experience or on occasion difficult to separate out. Outcome measures might address the intensity of symptoms and/or restriction of activities.

Fig 1

doi: https://doi.org/10.1371/journal.pone.0126758.g001