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Table 2 Morphological variables of the selected section (mm)

From: Study on the morphological characteristics and rotational alignment axis of placement plane of the tibial component in total knee arthroplasty for hemophilia-related knee arthritis

Morphological variables HA group (n = 40)
Mean ± SD (range)
OA group (n = 42)
Mean ± SD (range)
t P
MPAP 45.26 ± 3.96 (36.94, 55.63) 49.78 ± 3.06 (42.74, 56.47) − 5.808 0.000
LPAP 41.39 ± 5.426 (31.29, 52.69) 47.62 ± 4.49 (40.15, 56.69) − 5.689 0.000
GTL 74.21 ± 5.22 (61.01, 86.54) 74.79 ± 5.90 (55.31, 82.19) − 0.474 0.636
APL 46.60 ± 5.00 (33.36, 54.39) 49.63 ± 3.41 (41.40,56.21) − 3.200 0.002
PTL 24.47 ± 3.58 (18.86, 36.00) 27.52 ± 2.68 (22.60, 32.78) − 4.391 0.000
TTL 24.40 ± 3.35 (15.87, 31.82) 23.22 ± 3.14 (16.13, 30.83) 1.652 0.102
M1 3.66 ± 3.98 (− 2.51b, 18.32) 7.59 ± 4.35 (− 3.07b, 14.51) − 4.269 0.000
M2 3.07 ± 4.01 (− 4.56b, 15.20) 4.90 ± 3.67 (− 0.81b, 16.90) − 2.154 0.034
  1. HA: Hemophiliac Arthritis, OA: Osteoarthritis, SD: Standard Deviation, MPAP: the anteroposterior diameter of the medial platform of the osteotomy plane, LPAP: the anteroposterior diameter of the lateral platform of the osteotomy plane, GTL: geometric transverse length of the osteotomy plane, APL: anteroposterior length of the osteotomy plane, PTL: patellar tendon length, TTL: tibial tubercle length, M1: width of patellar tendon on the medial side of 0°AP axis, M2: width of the tibial tubercle on the medial side of 0°AP axis
  2. bNegative values indicate the medial areas of the medial edge of the patellar tendon or tibial tubercle