MCKENZIE MECHANICAL SYNDROMES COINCIDE WITH BIOPSYCHOSOCIAL INFLUENCES, INCLUDING CENTRAL SENSITIZATION: A DESCRIPTIVE STUDY OF INDIVIDUALS WITH CHRONIC NECK PAIN

BACKGROUND & OBJECTIVE

McKenzie mechanical diagnostic principles aim to categorize impairments and to provide a framework for treatment. This study was designed to classify mechanical diagnosis and therapy (MDT) along with biopsychosocial influences (BPS) in patients presenting with chronic cervical pain. The investigators had three goals:

1. Determine the percentage of participants categorized into each MDT subgroup.
2. Characterize the BPS contributions including central sensitization (CS) and cognitive-emotional influences.
3. Assess for associations between derangement (DER) and biopsychosocial influences.

METHODS

This is a cross-sectional observational study with a mix of convenience sample and recruitment. MDT trained therapists across Canada were asked to participate in the study. These therapists completed a "routine MDT evaluation" and classified the patients into MDT subgroups: derangement, dysfunction, postural, or other.

Participants also completed a battery of online assessments to determine clinical characteristics associated with their pain: numeric pain scale, body map, Central Sensitization Inventory (CSI), Pain Catastrophizing Scale (PCS), Tampa Scale of Kinesiophobia (TSK), along with standard demographic information.

RESULTS

84 participants met the inclusion criteria and completed the demographic data and pain location forms. 82 patients were classified into subgroups. 75.6% of these were classified as DER. 21 participants did not complete all of the online forms, leaving discrepancies

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