End-play zone reflects the first barrier to further motion created by capsuloligamentous structures around the joint. When you apply gentle overpressure near the end of the passive range, the joint resists movement with a firm quality that still has a slight give—a springy rebound as the ligaments and joint capsule stretch elastically before the true end feel. That firm but springy sensation is the hallmark of the end-play zone. Soft and pliable would feel more like excess tissue give before any meaningful joint resistance. No resistance suggests laxity or excessive joint play rather than a defined end-play. Sharp pain before resistance points to a painful, possibly pathological end feel rather than normal joint mechanics.