• Comprehensive assessment of knee-related function and quality of life.
• Long-term follow-up of ACL reconstruction, meniscus repairs, and articular cartilage surgeries.
• Monitoring progression of post-traumatic or degenerative osteoarthritis.
• Suitable for short-term and long-term recovery tracking.

• Symptoms: 7 items (Stiffness, clicking, grinding).
• Pain: 9 items (Relative to frequency and intensity).
• ADL: 17 items (Daily living activities like stairs, sitting, etc.).
• Sport/Rec: 5 items (Squatting, jumping, twisting, running).
• Quality of Life: 4 items (Awareness, lifestyle modification, confidence).

Each subscale is scored independently from 0 to 100. Higher scores = Better outcomes.

Active athletes often score 100 on ADLs but show deficits in "Sport/Rec" and "Quality of Life." This dissociation is critical for differentiating between "Functional Recovery" and "Psychological Impact."

• Missing data: At least 50% of the items in a subscale must be answered (e.g., 5 of 9 for Pain) for the score to be valid.
• Responsive: The "Sport/Rec" subscale is the most sensitive to outcome in sports medicine populations.
• Interpretation: A score of 0 represents extreme problems; 100 represents no problems.

• Identify Primary Deficit: If "Symptoms" (e.g., clicking/locking) is the low score, focus on mechanical integrity.
• QOL Focus: If "Quality of Life" is low despite good physical markers, address kinesiophobia (TSK-11).
• Serial Tracking: Monitor subscales independently to see which domains respond to specific PT interventions.