Table 3 The main results of the research

Total complications

25

50

Patients affected

18 (16.4 %)

39 (34.8 %)

0.002

 Medical complications

7

8

 Patients affected

6 (5.5 %)

6 (5.4 %)

0.974

  Pressure sore

2

3

  Pulmonary infection

1

1

  Urinary tract infection

1

1

  Deep venous thrombosis

1

1

  Atrial fibrillation

1

1

  Acute renal failure

0

0

  Other

1

1

 Orthopaedic complications

18

42

 Patients affected

12 (10.9 %)

33 (29.5 %)

0.001

  Periprosthetic fracture

1

5

  Femur shaft fracture after implant removed

3

10

0.049

  Prosthetic instability

1

4

  limb length discrepancy (>2.5 cm)

1

1

  Malunion

1

2

  Nonunion

2

4

  Cutout

1

3

  Abductor tendon deficiency

3

2

  Heterotopic ossification

1

2

  Intraoperative nerve injury

1

3

  Implant failure

1

1

  Aseptic loosening

0

1

  Periprosthetic infection

1

2

  Osteolysis with well-fixed implants

0

1

  Wound infection

1

1

Reoperation required in one year follow-up

0(0.0 %)

6(5.4 %)

0.029

Reoperation required in two years follow-up

1(0.9 %)

4(8.9 %)

0.035

Reoperation required in three years follow-up

1(1.8 %)

2(10.7 %)

0.006

Reoperation required in four years follow-up

3(4.5 %)

2(12.5 %)

0.034

Reoperation required at last follow-up

2(6.4 %)

1(13.4 %)

0.080