Table 1. Prognostic Factors (★★★★ unless otherwise specified)
Positive: Negative: Varying Effects:
• Preoperative Range of
Motion Preoperative
Strength
• High BMI
• Depression
• Greater Degree of Comorbidity
• Tobacco Use (★)
• Lack of Support System (★)
• Diabetes
• Sex
Table 2. Knee Injury and Osteoarthritis Outcomes Score for Joint
Replacement (KOOS JR) Survey
a
Score
None
(+0)
Mild
(+1)
Moderate
(+2)
Severe
(+3)
Extreme
(+4)
Stiffness: "How severe is your knee stiffness after first waking in the morning?
Pain: "What amount of knee pain have you experienced the last week during the
following activities?"
Twisting/pivoting on your
knee
Straightening knee fully
Going up or down stairs
Standing upright
Function/daily living: "For each of the following activities, please indicate the
degree of difficulty you have experienced in the last week due to your knee."
Rising from sitting
Bending to the floor/pick up
an object
Number of checks
Raw scores (0-28)
Raw
Score
Interval
Score
Raw
Score
Interval
Score
Raw
Score
Interval
Score
Raw
Score
Interval
Score
Raw
Score
Interval
Score
0 100.000 6 70.704 12 57.140 18 42.281 24 24.875
1 91.975 7 68.284 13 54.840 19 39.625 25 20.941
2 84.600 8 65.994 14 52.465 20 36.931 26 15.939
3 79.914 9 63.776 15 50.012 21 34.174 27 8.291
4 76.332 10 61.583 16 47.487 22 31.307 28 0.000
5 73.342 11 59.381 17 44.905 23 28.251
a
https://www.hss.edu/hoos-jr-koos-jr-outcomes-surveys.asp
© Hospital for Special Surgery
