Skip to main content

Table 3 Number and frequency the demographically calculated and digitally templated sizes differed from the sizes implanted. Calc FemAP represents the demographically calculated size from the femur in the anterior-posterior dimension, while Calc TibAP represents that for the tibia. Calc FemML represents the demographically calculated size from the tibia in the medial-lateral dimension, while Calc TibML represents that for the tibia

From: Demographic data is more predictive of component size than digital radiographic templating in total knee arthroplasty

Sizes away from implanted Exact match (0) ± 1 ± 2 ± 3 ± 4
Templated femur 64 (35.36%) 92 (50.83%) 21 (11.6%) 3 (1.66%) 1 (0.55%)
Templated tibia 66 (36.46%) 88 (48.62%) 23 (12.71%) 3 (1.66%) 1 (0.55%)
Calc FemAP 79 (43.65%) 84 (46.41%) 18 (9.94%) 0 (0%) 0 (0%)
Calc FemML 75 (41.44%) 90 (49.72%) 16 (8.84%) 0 (0%) 0 (0%)
Calc TibAP 79 (43.65%) 95 (52.49%) 7 (3.87%) 0 (0%) 0 (0%)
Calc TibML 79 (43.65%) 94 (51.93%) 8 (4.42%) 0 (0%) 0 (0%)