Purpose: Identify patients presenting with patellofemoral pain syndrome who will likely respond favorably to patellar taping.
Rule:
1. Tibial angulation greater than 5 degrees
2. Positive patellar tilt test
| Item | 2 variable |
| SN | – |
| SP | – |
| +LR | 4.4 |
| -LR | – |
| POS | ~83% |
| NPV |
SN = sensitivity – ‘SnOut’ helps rule out a disease (higher number is better – >0.9 is excellent)
SP = Specificity – ‘SpIn’ helps rule in a disease (higher number is better – greater than 0.90 is excellent))
+LR = positive likelihood ratio – ratio of positive test results in a patients with the pathology (true positives) higher number is better (> 10 is excellent)
-LR = negative likelihood ratio – ratio of negative test results in a patients with the pathology (false negatives) lower number is better (< 0.1 is excellent)
POS = Probability of success – positive treatment outcome
References:
1. Lesher JD, et al. Development of a clinical prediction rule for classifying patients with patellofemoral pain syndrome who respond to patellar taping. J Orthop Sports Phys Ther. 2006; 36(11): 854-66.
