Snoeker et al reported a clinical prediction rule for the diagnosis of a meniscal tear in an adult. The authors are from the University of Amsterdam.
Patient selection: adult from 18 to 65 years of age with knee complain
Parameters:
(1) sex
(2) age in years
(3) weight-bearing
(4) performance sport (soccer, rugby, etc)
(5) effusion
(6) warmth
(7) discolouration (red, blue)
(8) deep squat test
Parameter
Finding
Points
sex
female
0
male
84
age in years
18 to 28
29 to 38
30
39 to 48
60
49 to 58
90
59 to 65
108
weight-bearing
no
yes
49
performance sport
15
effusion
warmth
4
discolouration
deep squat test
negative
positive
3
total score =
= SUM(points for all 8 parameters)
Interpretation:
• minimum score: 0
• maximum score: 353
Total Score
Probability of Meniscal Tear
< 15
< 10%
15 to 310
(0.00035172 * ((score)^2)) + (0.13516 * (score)) + 5.9432
> 310
> 79%
X =
= (0.012 * (score)) - 2.5
probability of meniscal tear =
= 1 / (1 + EXP((-1) * X)
Performance:
• The area under the ROC curve is 0.76.
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Specialty: Surgery, orthopedic, Surgery, general
