1. Displaced disc material that is not contained by uninterrupted outer anulus.

2. (Non-Standard) [A disc in which a substantial portion of the displaced portion of the disc is outside of disc tissues.]

3. (NonStandard) [A disc in which a displaced portion is wholly outside of disc tissues].

4. (Non-Standard) [A disc in which a displaced fragment is not contained within disc tissues, ligament, or membrane].