Table 3 Karlstrom criteria for functional assessment after management of floating knee injuries
From: The floating knee: epidemiology, prognostic indicators & outcome following surgical management
CRITERION | EXCELLENT | GOOD | ACCEPTABLE | POOR |
|---|---|---|---|---|
Subjective symptoms from thigh or leg | none | Intermittent slight symptoms | More severe symptom impairing function | Considerable functional impairment: pain at rest |
Subjective symptoms from knee or ankle joint | none | Same as above | Same as above | Same as above |
Walking ability | Unimpaired | Same as above | Walking distance restricted | Uses cane, crutch or other support |
Work and sports | Same as before the accident | Given up some sport; work same as before accident | Change to less strenuous work | Permanent disability |
Angulation, rotational deformity or both | 0 | <10 degrees | 10 – 20 degrees | > 20 degrees |
Shortening | 0 | < 1 centimetre | 1 – 3 centimetres | > 3 centimetres |
Restricted joint mobility | 0 | <10 degrees at ankle; <20 degrees at hip, knee or both | 10 – 20 degrees at ankle; 20 – 40 at hip, knee or both | >20 degrees at ankle; >40 degrees at hip, knee or both |