Objective This scoping review analyzed various quantitative sensory testing methodologies used in the assessment of sensitization and how sensitization is defined in people with knee osteoarthritis. Design A scoping review. Setting All clinical and research settings. Subjects Non-surgical adults with knee osteoarthritis. Methods This scoping review was guided by existing scoping review methodologies. Relevant studies were extracted from the following electronic databases: Medical Literature Analysis and Retrieval System Online, Excerpta Medica Database, Allied and Complementary Medicine Database and the Cumulative Index to Nursing Allied Health Literature. Abstract and full article screening and data extraction were performed in pairs. Information on quantitative sensory testing techniques and parameters was extracted and summarized in tables. General and technique specific definitions of sensitization were extracted from included texts. Results Our search yielded 4199 articles, of which 50 were included in our review. The most common quantitative sensory test was pressure pain threshold. In total 28 unique testing sites were found speaking to the high degree of variability between studies. Sensitization was poorly defined with only 8 studies fully operationalizing it, 22 partially, and the remainder did not provide sufficient information to meet our criteria. Conclusion This scoping review has provided an overview of the most common methods of quantitative sensory testing being implemented in the assessment of nervous system sensitization to nociceptive signaling in people with knee osteoarthritis. This study provides a foundation for future development of quantitative sensory testing methodology for research and clinical practice in the osteoarthritis population.
Background: Quantitative sensory testing (QST) methods have become widely used for the assessment of nervous system sensitization to nociceptive signalling in studies of people with knee osteoarthritis (OA). However, few standardised QST protocols have been developed. Variability in their execution may lead to differences in their interpretation. Objective: The proposed scoping review will seek to identify the various QST methodologies being used in the assessment of sensitization and how sensitization is being defined in people with knee OA. Methods and Analysis: This scoping review will be guided by existing scoping review methodologies. Relevant studies will be extracted from the following electronic databases: Medical Literature Analysis and Retrieval System Online, ExcerptaMedica Database, Allied and Complementary Medicine Database and the Cumulative Index to Nursing Allied Health Literature. Independent screening of the abstracts and full articles and data extraction will be performed in pairs. Information extracted will focus on qualitative and quantitative data relevant to the content of the protocols from included studies. Data will be summarised in order to draw conclusions on the common elements used in QST protocols and definitions of sensitization for knee OA. Conclusion: This scoping review will provide insight into the most common methods of QST being implemented in the assessment of nervous system sensitization to nociceptive signalling in people with knee OA. This will potentially identify areas where a systematic review or other primary research may be required in order to develop fixed evidence-based protocols for QST in patients with knee OA.
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