Table 4 Causes of the first reoperations or readmission after surgery for hip fracture stratified by fracture type

Fracture type^a

Total

Cervical

Troch

Total

Cervical

Troch

Total

Cervical

Troch

Total

Cervical

Troch

Total

Cervical

Troch

Total

Cervical

Troch

Total

Cervical

Troch

N^b

328

184

144

509

263

246

634

317

317

818

397

421

1027

477

550

1253

576

677

1295

596

699

Conversion to/revision arthroplasty^c

17.38%

21.74%

11.81%

26.13%

26.24%

26.02%

32.49%

33.12%

31.86%

35.45%

37.03%

33.97%

37.39%

40.46%

34.73%

36.63%

41.15%

32.79%

36.37%

41.11%

32.33%

Infection

37.20%

45.65%

26.39%

31.24%

38.40%

23.58%

28.55%

33.75%

23.34%

24.69%

29.22%

20.43%

21.52%

26.00%

17.64%

19.07%

22.05%

16.54%

18.61%

21.31%

16.31%

Removal of implant

11.89%

7.61%

17.36%

22.79%

12.93%

33.33%

25.87%

12.93%

38.80%

25.92%

14.86%

36.34%

23.66%

13.84%

32.18%

21.07%

12.33%

28.51%

20.62%

12.08%

27.90%

Mechanical complication^d

23.17%

23.37%

22.92%

33.20%

29.28%

37.40%

33.12%

26.50%

39.75%

30.81%

25.19%

36.10%

26.97%

22.64%

30.73%

23.46%

19.44%

26.88%

23.09%

19.46%

26.18%

Dislocation

13.11%

20.65%

3.47%

12.38%

21.29%

2.85%

10.25%

17.98%

2.52%

8.31%

14.86%

2.14%

6.62%

12.37%

1.64%

5.43%

10.24%

1.33%

5.25%

9.90%

1.29%

Avascular necrosis

3.96%

1.63%

6.94%

2.55%

1.14%

4.07%

2.05%

0.95%

3.15%

1.59%

0.76%

2.38%

1.27%

0.63%

1.82%

1.04%

0.52%

1.48%

1.00%

0.50%

1.43%

Second hip fracture

30.18%

22.83%

39.58%

33.01%

29.28%

36.99%

37.54%

37.22%

37.85%

45.35%

44.58%

46.08%

53.16%

51.99%

54.18%

59.46%

59.20%

59.68%

60.46%

60.23%

60.66%

Malunion

0.00%

0.00%

0.00%

0.00%

0.00%

0.00%

0.00%

0.00%

0.00%

0.00%

0.00%

0.00%

0.10%

0.00%

0.18%

0.16%

0.00%

0.30%

0.15%

0.00%

0.29%

Nonunion

0.61%

0.00%

1.39%

2.16%

1.14%

3.25%

3.31%

2.21%

4.42%

4.77%

3.53%

5.94%

4.28%

2.94%

5.45%

3.91%

2.60%

5.02%

3.78%

2.52%

4.86%

Fracture type^a

Total

Cervical

Troch

Total

Cervical

Troch

N^a

2109

806

1303

2694

1008

1686

Stroke

6.83%

7.32%

6.52%

7.94%

8.33%

7.71%

Acute myocardial infarction

3.18%

3.47%

2.99%

3.19%

3.67%

2.91%

Pulmonary embolism

1.38%

1.12%

1.53%

1.19%

0.89%

1.36%

Deep vein thrombosis

1.28%

0.74%

1.61%

1.37%

0.99%

1.60%

Acute renal failure

10.05%

10.42%

9.82%

11.47%

12.60%

10.79%

Acute respiratory failure

25.27%

22.33%

27.09%

30.59%

26.39%

33.10%

Pneumonia

37.08%

36.72%

37.30%

43.50%

41.27%

44.84%

Exacerbation of COPD

52.82%

52.61%

52.95%

48.37%

48.21%

48.46%