Knee Scoring Scale I of Kettelkamp and Thompson

pain with activity

none

26

with unusually heavy activity

22

at the end of the day and not limiting

18

at the end of the day and limiting

14

after few hours or walking a few blocks

10

after less than 1 hour or walking 1 block

6

with every step

3

constant

0

shoes and socks

no trouble

6

difficult

4

can do sock but not shoe

2

cannot do either sock or shoe

0

stairs

no trouble

22

slow with alternating steps

14

one at a time

6

cannot handle stairs

0

gait

no limp

2

limp, 1 cane or 1 crutch

1

2 canes or 2 crutches

0

synovial thickening

none

4

mild

2

moderate

1

severe

0

flexion contracture

0 degrees

8

1 to 5 degrees

6

6 to 10 degrees

4

11 to 15 degrees

2

16 to 20 degrees

1

> 20 degrees

0

flexion in degrees

> 100°

2

75 to 99°

1

< 75°

0

anterior drawer

negative

6

slightly positive

4

moderately positive

2

markedly positive

0

rotational instability

none

6

mild

4

moderate

2

severe

0

lateral collateral ligament stability

intact

8

mildly loose

6

moderately loose

4

markedly loose

0

pain with flexion and extension

no

6

on flexion or extension

3

on both flexion and extension

0

pain on rotation

no

8

either external or internal

4

on both external and internal

0

varus-valgus

< 5°

0

5 to 9° valgus

1

> 9°

0