The Type III Wrisberg-type discoid lateral meniscus is characterized by:
- Lack of popliteomeniscal fascicles and meniscotibial coronary ligament attachments.
- Sole stabilization by the Wrisberg meniscofemoral ligament for the posterior horn.
- Arthroscopically proven prevalence of less than 0.2%.
- Generally normal or slightly thickened posterior horn morphology.
- Increased likelihood of meniscal instability symptoms, such as snapping or locking, due to hypermobility and instability.
- The condition often presents with a snapping knee during extension, with potential subluxation of the discoid lateral meniscus posterior horn into the joint.
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