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Table.3 Clinical characteristics of the patients involved in the study (n = 70)

From: Characteristics of intramedullary nail breakage in pertrochanteric femur fractures: a summary of 70 cases

Parameter

Value

Age (years) (mean, min–max)

72.3 (35–94)

 < 65 (n, %)

16 (22.9%)

 ≥ 65 (n, %)

54 (77.1%)

Sex (n, %)

 

 Female

36 (51.4%)

 Male

25 (35.7%)

 Unknown

9 (12.9%)

Initial trauma (n, %)

 

 Low energy (simple fall)

57 (81.4%)

 High energy

13 (18.6%)

AO/OTA classification (n, %)

 

 31 A1

2 (2.9%)

 31 A2

24 (34.3%)

 31 A3

44 (62.9%)

Broken nails (n, %)

 

 Short

47 (67.1%)

 Long

23 (32.9%)

Time from surgery to breakage (months) (mean, min–max)

9.4 (1–84)

 ≤ 3 (n, %)

9 (12.9%)

 3–6 (n, %)

23 (32.9%)

 > 6 (n, %)

38 (54.3%)

Mechanism of nail breakage (n, %)

 

 Atraumatic

61 (87.1%)

 Traumatic

5 (7.1%)

 Iatrogenic

4 (5.7%)

Site (n, %)

 

 Proximal aperture

61 (87.1%)

 Distal aperture

7 (10.0%)

 Proximal and distal apertures

2 (2.9%)

Fracture healing when breakage (n, %)

 

 Non-union/delayed union

65 (92.9%)

 Infected non-union

1 (1.4%)

 Union

4 (5.7%)

Self-dynamism before breakage (n, %)

 

 Yes

12 (17.1%)

 No

58 (82.9%)

Management (n, %)

 

 Osteosynthesis revision

46 (65.7%)

 Arthroplasty

17 (24.3%)

 Implant removal

4 (5.7%)

 Conservation

3 (4.3%)