It has been recently demonstrated that finding of locking and giving way do not delineate a cartilage tear:
September 9, 2018
Knee Meniscus Signs Do not Help in Diagnosis
To emphasize that they state ” clicking, giving way, and pseudolocking have been reported in approximately 50% of all patients who present with a painful medial plica irritation.”
This is one previously unidentified disorder that can cause recurrent painful locking.
Surgeon. 2018 Aug;16(4):195-201. doi: 10.1016/j.surge.2017.05.003.
A new anterior inferior coronal patellar plica.
Sadile F et al.
- 1% of knee arthoscopies
- not visible by MRI or CT
- over 1/2 will be torn
- “plica triggers shooting pain when the patient stands up from a sitting position, and painful snapping or locking of the knee.”
- it covers the knee coming up like a child’s bib
- excision relieves it.
Comment – I see more medial plicas than I would have thought and now there is another one