Table 3 Assessment of gap balance comparing the anticipated gap, measured gap, and predicted gap in reference to the corresponding femoral bony resection (mm)
Specimen number | 1 left | 2 left | 2 right | 3 left | 3 right | 4 left | 4 right | Mean | SD | |
|---|---|---|---|---|---|---|---|---|---|---|
Medial extension gap | Anticipated gap | 18.0 | 20.0 | 21.0 | 17.0 | 20.0 | 19.0 | 18.0 | 19.00 | 1.41 |
Measured gap | 19.0 | 19.0 | 19.0 | 19.0 | 21.0 | 20.0 | 19.0 | 19.43 | 0.79 | |
Accuracy | −1 | 1 | 2 | −2 | −1 | −1 | −1 | −0.43 | 1.40 | |
Actual gap versus predicted gap (20 mm) | −1 | −1 | −1 | −1 | 1 | 0 | −1 | −0.57 | 0.79 | |
Lateral extension gap | Anticipated gap | 17.0 | 19.0 | 21.0 | 17.0 | 19.0 | 19.0 | 18.0 | 18.57 | 1.40 |
Measured gap | 19.0 | 19.0 | 19.0 | 19.0 | 21.0 | 20.0 | 19.0 | 19.43 | 0.79 | |
Accuracy | −2 | 0 | 2 | −2 | −2 | −1 | −1 | −0.86 | 1.46 | |
Actual gap versus predicted gap (20 mm) | −1 | −1 | −1 | −1 | 1 | 0 | −1 | −0.57 | 0.79 | |
Medial flexion gap | Anticipated gap | 18.0 | 20.0 | 19.0 | 19.0 | 20.0 | 18.0 | 18.0 | 18.86 | 0.90 |
Measured gap | 20.0 | 19.0 | 19.0 | 19.0 | 21.0 | 20.0 | 21.0 | 19.86 | 0.90 | |
Accuracy | −2 | 1 | 0 | 0 | −1 | −2 | −3 | −1.00 | 1.41 | |
Actual gap versus predicted gap (20 mm) | 0 | −1 | −1 | −1 | 1 | 0 | 1 | −0.14 | 0.90 | |
Lateral flexion gap | Anticipated gap | 18.0 | 20.0 | 20.0 | 18.0 | 20.0 | 18.0 | 19.0 | 19.00 | 1.00 |
Measured gap | 20.0 | 19.0 | 23.0 | 21.0 | 23.0 | 24.0 | 21.0 | 21.57 | 1.81 | |
Accuracy | −2 | 1 | −3 | −3 | −3 | −6 | −2 | −2.57 | 2.07 | |
Actual gap versus predicted gap (22 mm) | −2 | −3 | 1 | −1 | 1 | 2 | −1 | −0.43 | 1.81 | |