The validity of the cervical rotation lateral flexion test in predicting benefit after manipulation treatment to the first and second rib.

STUDY DESIGN

Prospective cohort study.

BACKGROUND

The cervical rotation lateral flexion (CRLF) test is frequently used in clinical practice to determine whether a thrust manipulation targeting the first rib should be performed.

OBJECTIVES

To evaluate the predictive validity of the CRLF test and manual examination in determining whether patients with neck pain are likely to benefit from manipulative treatment to the first and second rib.

METHODS

A physical examination incorporating the CRLF test was performed on 50 participants with neck pain followed by manipulation treatment to the first and second ribs. Clinical improvement was assessed immediately and one week after treatment. Participants who experienced at least a 30% improvement in their Neck Disability Index (NDI) score were considered "improved." Predictive validity was assessed by calculating sensitivity, specificity, and negative and positive likelihood ratios.

RESULTS

Neither the CRLF test nor manual examination were predictive of clinical improvement after manipulative treatment to the first and second rib. However, being male, of older age, and exhibiting T1 and/or T2 restricted end-feel were associated with improved neck related-disability at one-week follow-up.

CONCLUSION

The CRLF test does not appear to be helpful in determining whether patients with neck pain are likely to benefit from manipulative treatment to the first and second rib. Other factors from the history and clinical examination may be more helpful when selecting manipulative treatment including age and gender and possibly the presence of T1/T2 restricted end-feel.