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Patellar J Sign
From WikiSM
Other Names
- J-sign
- Patellar J-sign
- Inverted J sign
- J-sign test
Purpose
Demonstration of the normal patella J sign[1]
- Evaluate tracking of the Patella in the Patellofemoral Joint
Description
- Patient is seated with leg hanging off examination table
- Patient is asked to bring knee into full extension and then passively flex to 90° or more
- Abnormal
- Laterally tracking patella suddenly shifts medially as it engages the trochlear groove of the distal Femur
Pathology
Evidence
- Needs to be updated
See Also
References
- ↑ D’Ambrosi, Riccardo, et al. "Anterior knee pain: state of the art." Sports Medicine-Open 8.1 (2022): 98.
Created by:
John Kiel on 26 October 2020 00:01:54
Authors:
Last edited:
25 April 2023 15:10:39
Category: