A STUDY INVESTIGATING THE RELATIONSHIP BETWEEN NECK PAIN AND UPPER LIMB DISABILITY IN A PATIENT POPULATION

Abstract

Background: The purpose of this study was to investigate the relationship between neck pain and upper limb disability.

Methodology: This was a secondary analysis of neck pain patients participating in an RCT comparing usual physiotherapy with graded exercise treatment, to investigate the correlation between baseline neck pain and baseline upper limb disability. 151 neck pain patients from High Wycombe, Nottingham, Grimsby and Hull participated in the study. The measure used to assess baseline neck pain/disability was the Northwick Park Neck Pain Questionnaire (NPQ). The measure of baseline upper limb disability was the Disabilities of Arm, Shoulder, Hand (DASH). A range of variables were also measured at baseline as potential confounding variables. These included pain self efficacy, anxiety, depression, fear avoidance beliefs, coping strategies, age, gender, current smoking status, material and social deprivation and activity level. The measures were validated self administered questionnaires.

Results: Pair wise analysis revealed a strong positive correlation between NPQ score and DASH score (Pearsons’ r=0.799, p< 0.001 (2 tailed), n=142). Stepwise linear regression indicated that increased severity of upper limb disability was predicted by two baseline variables: higher NPQ scores (B=0.743) and lower pain self efficacy scores (B= – 0.489) {Adjusted R2=0.708; n=100, p< 0.001}. After adjusting for potential confounding variables there remains a strong positive association between NPQ score and DASH score.

Conclusions: Patients presenting with high levels of neck pain may also have high levels of upper limb disability. Upper limb disability may need to be assessed and addressed as part of the neck management process.