Table 6.
Time trends in Physician examination findings of Index Knee Joint from 1993 to 2005 in patients undergoing primary TKA
| 1993–1995 | 1996–1998 | 1999–2001 | 2002–2005 | P-value | |
|---|---|---|---|---|---|
| Knee Joint Effusion | 0.001 | ||||
| None | 44.1 | 43.3 | 43.1 | 38.3 | |
| Slight | 40.9 | 41.6 | 44.5 | 47.9 | |
| Moderate | 11.7 | 12.0 | 9.3 | 11.3 | |
| Severe | 0.8 | 0.8 | 0.8 | 0.6 | |
| Synovitis | <0.001 | ||||
| None | 53.6 | 58.8 | 60.1 | 57.0 | |
| Slight | 31.3 | 25.8 | 25.9 | 29.5 | |
| Moderate | 7.4 | 6.0 | 4.6 | 5.6 | |
| Severe | 0.7 | 0.5 | 0.1 | 0.2 | |
| Knee Instability, anterior-posterior | <0.001 | ||||
| <5 mm | 85.5 | 89.6 | 88.5 | 91.0 | |
| 5–10 mm | 7.2 | 4.0 | 5.2 | 4.9 | |
| >10 mm | 0.4 | 0.4 | 0.6 | 0.4 | |
| Knee Instability, medial-lateral | <0.001 | ||||
| <5 degrees | 59.3 | 62.9 | 63.6 | 76.4 | |
| 5–10 degrees | 33.4 | 29.3 | 29.6 | 19.3 | |
| >10 degrees | 1.9 | 2.2 | 2.0 | 1.2 | |
| Limp | <0.001 | ||||
| None | 10.4 | 11.7 | 13.5 | 8.2 | |
| Slight | 40.6 | 43.8 | 44.4 | 44.6 | |
| Moderate | 21.1 | 20.7 | 20.0 | 38.2 | |
| Severe | 12.3 | 11.8 | 9.8 | 8.2 | |
| Unable to walk | 1.5 | 0.5 | 0.9 | 0.5 | |
| Muscle strength | <0.001 | ||||
| Good | 75.2 | 77.9 | 83.1 | 85.2 | |
| Fair | 16.4 | 14.2 | 11.7 | 10.9 | |
| Poor | 1.5 | 2.0 | 1.1 | 1.0 | |
| Peripheral pulses | <0.001 | ||||
| Normal | 65.2 | 71.9 | 73.4 | 77.7 | |
| Diminished | 20.3 | 16.3 | 17.5 | 16.0 | |
| Absent | 2.6 | 1.4 | 1.5 | 1.3 | |
| Active Knee Range of motion* | <0.001 | ||||
| ≤90 degrees | 24.4 | 29.7 | 19.1 | 16.3 | |
| 91–100 degrees | 17.6 | 15.4 | 16.5 | 15.9 | |
| 101–110 degrees | 18.6 | 19.0 | 23.9 | 22.9 | |
| 111–120 degrees | 19.0 | 19.7 | 22.0 | 26.9 | |
| >120 degrees | 20.3 | 16.3 | 18.4 | 18.0 |
*
Due to missingness of measurements, data were available only for 4,840 patients for the active range of motion of the index knee