Patellar apprehension test (reversed dynamic version)
For: Lateral patellar instability
The kneecap slips partly or fully out of its groove towards the outside of the knee.
Treat with caution (see below)Caution: Case–control study: flatters accuracy.
What the numbers mean
- Positive result: see the caution above before relying on this result.
- Negative result: see the caution above before relying on this result.
Source
Zimmermann F, Liebensteiner MC, Balcarek P. The reversed dynamic patellar apprehension test mimics anatomical complexity in lateral patellar instability. Knee Surg Sports Traumatol Arthrosc. 2019;27(2):604–610. Journal article · single study
Figures as they will appear in Rule It In, Rule It Out (Trokos, forthcoming). If a newer or better study changes them, this page changes with the book. Figures last updated from the book on 2 October 2026.
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