Which statement correctly compares OCD grade I and grade II lesions?

Prepare for the Tissue Injury, Healing, and Pain Test. Utilize flashcards and multiple-choice questions with hints and explanations. Ensure you're ready for the exam!

Understanding how OCD lesions are graded depends on the stability of the fragment and whether the articular surface stays continuous. A grade I lesion is stable with the articular surface intact—the underlying subchondral bone may be involved, but no fragment has detached. A grade II lesion is more advanced, showing partial discontinuity or fissuring of the surface, yet the piece remains attached and does not become a loose body, so it is still considered stable. This is why describing grade I as stable with surface continuity and grade II as stable with partial discontinuity best fits how these lesions are classified. The other statements imply instability, a fully displaced fragment, subchondral fracture as a defining feature, or focus on symptoms rather than surface integrity, which does not line up with the grading criteria. Clinically, stability informs management: stable lesions often respond to nonoperative approaches, while unstable or detached fragments may require intervention.