An exploratory study of provocation testing with padded wedges: can prone blocking demonstrate a directional...

Area of Science:

• Chiropractic research
• Spinal biomechanics
• Pain assessment

Background:

• Traditional chiropractic methods for identifying spinal listings lack clear guidance for low back pain (LBP) treatment decisions.
• A reliable examination method to guide manipulative vectors is needed for LBP patients.
• Developing such an examination could significantly benefit clinicians and patients.

Purpose of the Study:

• To investigate two protocols for provocation testing and directional preference assessment using padded wedges.
• To evaluate the efficacy of padded wedges in identifying directional preference in LBP patients.

Main Methods:

• Two groups of 20 subjects were tested using padded wedges in prone positions.
• Group 1: Pain pressure threshold (PPT) measured at 4 anatomical points.
• Group 2: Tenderness measured at 1 anatomical point.

Main Results:

• Measuring tenderness at 1 point yielded a directional response in 70% of subjects, with minimal increase in baseline tenderness.
• Measuring PPT at 4 points showed a directional response in 40% of subjects, but 12 experienced decreased PPT.
• Tenderness measurement at a single point demonstrated a more reliable directional preference response.

Conclusions:

• Assessing changes in tenderness at one anatomical point using padded wedge patterns is a promising examination technique.
• This method shows potential for determining directional preference in LBP patients.
• Further research is warranted to validate this approach for clinical application.