Execution:
- Patient is in supine-lying with the affected knee extended and the quadriceps relaxed
- The examiner pushes his web space of the thumb against the base of the patella and applies downward pressure on the patella
- The examiner then asks the patient to contract his quadriceps as if they were to extend the leg, while keeping the pressure on the patella
Positive Outcome: Reproduction of pain during the movement of patella or the inability to complete the test by the patient
| Study |
Reliability |
Sn | Sp | LR+ |
LR- |
| Cook et al. (2012) |
NA |
39-49 | 67 -95 | 0.9-7.4 |
0.7-1.1 |
| Nijs et al. (2006) |
NA |
NA | NA | 1.94 |
0.69 |
