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Table 3 Mean absolute deviation from target

From: Patient-specific instrumentation improved three-dimensional accuracy in total knee arthroplasty: a comparative radiographic analysis of 1257 total knee arthroplasties

 

CVI group (n = 442)

PSI group (n = 815)

p value

HKA

2.3° (1.7)

1.7° (1.2)

< 0.001

FFC

1.8° (1.3)

1.3° (0.9)

< 0.001

FTC

1.5° (1.2)

1.3° (0.9)

< 0.001

LFC

0.9° (1.4)

0.7° (1.0)

0.011

LTC

0.6° (1.2)

0.4° (0.9)

0.003

FCRa

2.5° (1.4)

1.1° (0.6)

< 0.001

  1. Values are given as mean and standard deviation in parentheses
  2. CVI conventional instrumentation, FCR femoral component rotation, FFC frontal femoral component angle, FTC frontal tibial component angle, HKA hip-knee-ankle angle, LFC lateral femoral component angle, LTC lateral tibial component angle, PSI patient-specific instrumentation
  3. aCT scans for the evaluation of rotational component alignment were available for 44 cases of the CVI group, and for 94 case of the PSI group
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