What is the role of sensitization in carpal tunnel syndrome where pain impacts functional capacity?

Abstract

Aims: Expression of carpal tunnel syndrome (CTS) caused by the entrapped median nerve includes pain, paraesthesia and numbness. Extra median spread of pain can furthermore be seen as a clinical requirement defined by neuro inflammation. Central sensitization (CS) constructs a similar mechanism. This study aims to evaluate sensitization in patients diagnosed with CTS. Methods: A total number of 152 patients diagnosed with CTS were evaluated, prospectively. Patients data such as gender, age, body mass index (BMI), disease duration, pain severity (NRS), painDETECT questionnaire, Boston CTS symptom severity scale (SSS) and functional status scale (FSS), CS scale, electroneuromyography results have been collected by the author and then the patients are divided into three groups. Results: Regarding the age, BMI and CS rate, there was no statistical difference between the three patient groups (p>0.05). However, a statistically significant difference was found between these groups in disease duration, day-time and night-time NRS, Boston SSS, FSS, and pain DETECT scores (p<0.05). A statistically significant correlation between age, BMI, NRS daytime scores, Boston SSS, FSS, and CS existence was not found (p>0.05). Yet, statistically significant differences were found in a comparison of the patients with and without CS, in disease duration, NRS night scores, and painDETECT scores (p<0.05). Conclusion: We conclude that the rate of CS is often undervalued in patients with CTS. CS should be considered in CTS patients with extra-median spread of pain.

Keywords

• Carpal tunnel syndrome
• functional capacity
• central sensitization

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