Table 2.

Nirschl tendonosis pain phases.

Phase 1: Mild pain after exercise activity, resolves within 24 hours

Phase 2: Pain after exercise activity, exceeds 48 hours, resolves with warm-up

Phase 3: Pain with exercise activity that does not alter activity

Phase 4: Pain with exercise activity that alters activity

Phase 5: Pain caused by heavy activities of daily living

Phase 6: Intermittent pain at rest that does not disturb sleep, pain caused by light activities of daily living

Phase 7: Constant rest pain (dull aching) and pain that disturbs sleep