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Table 2 Number of times the digitally templated (columns) and demographically calculated (rows) predicted an exact match (“Perfect”), within 1 size (“Close”), and > 1 size (“Off”) from the implanted total knee arthroplasty component. The demographically calculated size was first calculated according to femoral anterior-posterior (AP), femoral medial-lateral (ML), tibial anterior-posterior, and tibial medial-lateral dimensions (in descending order) and subsequently converted to the respective implant size

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

Femoral AP dimension
  Templated
Perfect (0) Close (1) Off (≥ 2)
Calculated Perfect (0) 33 35 11
Close (1) 26 46 12
Off (2) 5 11 2
Femoral ML dimension
  Templated
Perfect (0) Close (1) Off (≥ 2)
Calculated Perfect (0) 32 32 11
Close (1) 27 50 13
Off (2) 5 10 1
Tibial AP dimension
  Templated
Perfect (0) Close (1) Off (≥ 2)
Calculated Perfect (0) 26 41 12
Close (1) 36 44 15
Off (2) 4 3 0
Tibial ML dimension
  Templated
Perfect (0) Close (1) Off (≥ 2)
Calculated Perfect (0) 27 40 12
Close (1) 34 45 15
Off (2) 5 3 0