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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