الفهرس 
Quantitative assessment of shoulder proprioception in patients with chronic mechanical cervical pain
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Abstract
Background: chronic mechanical cervical pain is a common condition that affects physically active young adult and adolescents.There is a direct relation between cervical region and shoulder region coming from the muscular and neural connection. Shoulder joint problems are also found to be common in patient with chronic cervical pain.However, the effect of chronic cervical pain on shoulder proprioception is still under research. Objective:To compare shoulder proprioception in patients with chronic mechanical cervical pain to a matched normal group. Methods: This study included two groups, 40 subjects (mean age 32.28±6.586) with mechanical chronic cervical pain and 40 healthy subjects (mean age 33.43±9.021) representing the control group. The primary outcome measure was the shoulder proprioception test of both upper limbs during active repositioning (ARP) and quantified with angular displacement error (ADP).Test was applied using an Isokinetic Dynamometer device (IKD) at angle of 30{u00B0} for both shoulder internal and external rotation with an angular velocity of 30{u00B0}/sec. Results: Participants with chronic mechanical cervical pain showed a significant absolute reposition error compared with normal subjects in both of shoulder external (p=0.000) and internal rotation (p=0.000) angles. Conclusion: Shoulder proprioception was majorly affected by the presence of chronic mechanical cervical pain