Abstract
Purpose
This study was carried out to examine the relationship between rest, activity, and nighttime pain and grip and isokinetic muscle strength of the wrist muscles in individuals with lateral epicondylitis.
Methods
Fifty-six sedentary individuals aged between 18 and 65 years diagnosed with unilateral lateral epicondylitis volunteered to participate in the study. The level of rest, activity, and nighttime pain was evaluated with visual analog scale (VAS). The grip strengths of both arms were evaluated by averaging a maximum of three grip strength measurements using a hand dynamometer. The strength of both wrist flexor and extensor muscles were evaluated with isokinetic dynamometer at angular velocities of 60 and 180°/s with five and 15 concentric repetitions respectively.
Results
There was no significant relationship found between the affected side’s grip strength and isokinetic muscle strength with rest, activity and nighttime pain (all P > 0.05). However, there was a difference observed between the affected and unaffected side in grip strength and isokinetic strength measurements of all wrist muscles (all P < 0.05); the unaffected side values were found to be higher.
Conclusion
The result of this study found no correlation between the stated level of pain and the true muscle strength in the affected hand. In line with these findings, we think that assessments involving strength can be made in other musculoskeletal problems where pain is present. However, the findings may not reflect the true muscle strength which will tend to be underrated.
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Data availability
The datasets analyzed for the current study are available upon reasonable request.
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All authors contributed to the research strategy, evaluations, research question design, and data analysis strategy. All authors read and approved the final manuscript.
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All procedures of the study comply with the principles of the Helsinki Declaration (2008), approval for this study was obtained from Ankara Yıldırım Beyazıt University Social and Humanities Ethics Committee (2023/06–260).
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Informed consent was obtained from all participants included in the study.
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Akınoğlu, B., Shehu, S.U., Yılmaz, A.E. et al. Investigating the relationship between pain level and grip and wrist muscles strength in individuals with lateral epicondylitis: is pain a barrier to strength assessment?. International Orthopaedics (SICOT) 48, 651–656 (2024). https://doi.org/10.1007/s00264-023-06068-2
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DOI: https://doi.org/10.1007/s00264-023-06068-2