Synovial folds, also known as synovial plicae, are remnant folds or duplications of the synovial membrane that form during embryonic development within a joint.
In more detail:
- Origin: They are congenital, meaning they are present from birth, originating as residual tissue from the development of the joint during the embryonic stage.
- Location: While they can occur in various joints, they are most commonly observed and described in the knee, elbow, and hip. They may also be found in other joints.
- Composition: Synovial folds consist of synovium, the soft tissue lining the joint capsule.
- Clinical Significance: In many cases, synovial folds are asymptomatic and cause no issues. However, they can become symptomatic (plica syndrome) if they become inflamed, thickened, or injured, leading to pain, clicking, or limited range of motion. This is most commonly seen in the knee.
