Hurdle

KOOS (Knee Injury and Osteoarthritis Outcome Score)

screening

Digital administration of KOOS (Knee Injury and Osteoarthritis Outcome Score) to collect structured patient inputs for validated score calculation and clinical follow-up.

KOOS (Knee Injury and Osteoarthritis Outcome Score)

Clinical intent

The Knee Injury and Osteoarthritis Outcome Score (KOOS) is a comprehensive questionnaire designed to assess both short and long-term patient-relevant outcomes following knee injury. The KOOS is self-administered and assesses five separate patient-relevant dimensions:

  1. Pain (9 items),
  2. Symptoms (7 items),
  3. Activities of Daily Living (ADL) Function (17 items),
  4. Sport and Recreation Function (5 items),
  5. Knee-related Quality of Life (4 items).

The questionnaire takes approximately 10 minutes to complete [1].

Calculation

Each subscale score is calculated independently. Calculate the mean score of the individual items of each subscale and divide by 4 (the highest possible score for a single answer option).

Traditionally in orthopedics, 100 indicates no problems and 0 indicates extreme problems. The normalized score is transformed to meet this standard.

Formula: 100-meanSubscaleScore/4*100

Clinical interpretation

0 represents extreme knee problems and 100 represents no knee problems.

References

[1] Roos EM, Roos HP, Lohmander LS, Ekdahl C, Beynnon BD. Knee Injury and Osteoarthritis Outcome Score (KOOS)--development of a self-administered outcome measure. J Orthop Sports Phys Ther. 1998 Aug;28(2):88-96.

Pathway

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Form preview

Interactive preview of the questionnaire. Not for clinical use. Responses are not stored.

KOOS (Knee Injury and Osteoarthritis Outcome Score) Questionnaire
Please complete this questionnaire. Your responses help your clinical team assess your symptoms and monitor progress over time.
How often do you experience knee pain?
What amount of pain have you experienced the last week when twisting/pivoting on your knee?
What amount of pain have you experienced the last week when straightening the knee fully?
What amount of pain have you experienced the last week when bending the knee fully?
What amount of pain have you experienced the last week when walking on a flat surface?
What amount of pain have you experienced the last week when going up or down stairs?
What amount of pain have you experienced the last week at night while in bed?
What amount of pain have you experienced the last week when sitting or lying?
What amount of pain have you experienced the last week when standing upright?
How severe was your knee stiffness during the last week after first wakening in the morning?
How severe was your knee stiffness during the last week after sitting, lying, or resting later in the day?
Did you have swelling in your knee during the last week?
Did you feel grinding, hear clicking or any other type of noise when your knee moved during the last week?
Did your knee catch or hang up when moving during the last week?
Could you straighten your knee fully during the last week?
Could you bend your knee fully during the last week?
What difficulty have you experienced during the last week when descending stairs?
What difficulty have you experienced during the last week when ascending stairs?
What difficulty have you experienced during the last week when rising from sitting?
What difficulty have you experienced during the last week when standing?
What difficulty have you experienced during the last week when bending to floor/picking up an object?
What difficulty have you experienced during the last week when walking on flat surface?
What difficulty have you experienced during the last week when getting in/out of car?
What difficulty have you experienced during the last week when going shopping?
What difficulty have you experienced during the last week when putting on socks/stockings?
What difficulty have you experienced during the last week when rising from bed?
What difficulty have you experienced during the last week when taking off socks/stockings?
What difficulty have you experienced during the last week when lying in bed (turning over, maintaining knee position)?
What difficulty have you experienced during the last week when getting in/out of bath?
What difficulty have you experienced during the last week when sitting?
What difficulty have you experienced during the last week when getting on/off the toilet?
What difficulty have you experienced during the last week when doing heavy domestic duties (shovelling, scrubbing floors, moving heavy boxes, etc)?
What difficulty have you experienced during the last week when doing light domestic duties (cooking, dusting, etc)?
What difficulty have you experienced during the last week when squatting?
What difficulty have you experienced during the last week when running?
What difficulty have you experienced during the last week when jumping?
What difficulty have you experienced during the last week when turning/twisting on your injured knee?
What difficulty have you experienced during the last week when kneeling?
How often are you aware of your knee problems?
Have you modified your lifestyle to avoid potentially damaging activities to your knee?
How troubled are you with lack of confidence in your knee?
In general, how much difficulty do you have with your knee?