Patient-Rated Ulnar Nerve Evaluation (PRUNE)
What It Measures
The Patient-Rated Ulnar Nerve Evaluation (PRUNE) is a questionnaire for people with ulnar nerve compression at the elbow, often called cubital tunnel syndrome. Its 20 questions cover the past week in four groups: six about pain, four about nerve symptoms such as numbness, tingling, and hand weakness, six about specific tasks like carrying a heavy object, and four about usual activities, including personal care, household work, job, and recreation.
Each item is rated from 0 (none or no difficulty) to 10 (worst possible or completely unable). Subscale scores are added into a total scaled 0 to 100, with symptoms and function weighted equally. The minimal detectable change is about seven points. Hand therapists use it to track recovery after conservative care or nerve transposition surgery.
Further Reading
Additional Notes
Licensing Notes: The developer and copyright owner, provides the PRUNE for free use. The full instrument is available in the 2013 validation paper, which is published under a Creative Commons Attribution license. Questions about use go to [email protected]
