Table 3 Type of fractures, intra- or postoperative occurrence and distribution according to the Vancouver Classification for pre-matched and post-matched cohort
Pre-matched cohort | Post-matched cohort | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Straight stem (n = 95) | Short stem (n = 39) | P value | Straight stem (n = 63) | Short stem (n = 37) | P value | |||||
Occurence of PFF | 0.171 | 0.132 | ||||||||
Intraoperative | 40 | 42.1% | 11 | 28.2% | 25 | 39.7% | 9 | 24.3% | ||
Postoperative | 55 | 57.9% | 28 | 71.8% | 38 | 60.3% | 28 | 75.7% | ||
Vancouver Classification | ||||||||||
Intraoperative | ||||||||||
Vancouver A | 33 | 34.7% | 6 | 15.4% | 0.035 | 20 | 31.7% | 5 | 13.5% | 0.056 |
A1 | 1 | 1.1% | 0 | 0.0% | 1 | 1.6% | 0 | 0.0% | ||
A2 LT | 1 | 1.1% | 4 | 10.3% | 0 | 0.0% | 4 | 10.8% | ||
A2 GT | 28 | 29.3% | 2 | 5.1% | 18 | 28.6% | 1 | 1 2.7% | ||
A3 LT | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | ||
A3 GT | 3 | 3.2% | 0 | 0.0% | 1 | 1.6% | 0 | 0.0% | ||
Vancouver B | 6 | 6.3% | 5 | 12.8% | 0.297 | 4 | 6.3% | 4 | 10.8% | 0.463 |
B1 | 2 | 2.1% | 0 | 0.0% | 2 | 3.2% | 0 | 0.0% | ||
B2 | 4 | 4.2% | 5 | 12.8% | 2 | 3.2% | 4 | 10.8% | ||
B3 | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | ||
Vancouver C | 1 | 1.1% | 0 | 0.0% | 1.000 | 1 | 1.6% | 0 | 0.0% | 1.000 |
C1 | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | ||
C2 | 1 | 1.1% | 0 | 0.0% | 1 | 1.6% | 0 | 0.0% | ||
C3 | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | ||
Postoperative PFFs | ||||||||||
Vancouver A | 46 | 48.4% | 7 | 17.9% | < 0.001 | 32 | 50.8% | 7 | 18.9% | 0.001 |
AG | 46 | 48.4% | 7 | 17.9% | 32 | 50.8% | 7 | 18.9% | ||
Vancouver B | 7 | 7.4% | 21 | 53.8% | < 0.001 | 5 | 7.9% | 21 | 56.8% | < 0.001 |
B1 | 1 | 1.1% | 1 | 2.6% | 1 | 1.6% | 1 | 2.7% | ||
B2 | 5 | 5.2% | 20 | 51.2% | 3 | 4.8% | 20 | 54.1% | ||
B3 | 1 | 1.1% | 0 | 0.0% | 1 | 1.6% | 0 | 0.0% | ||
Vancouver C | 2 | 2.1% | 0 | 0.0% | 1.000 | 1 | 1.6% | 0 | 0.0% | 1.000 |
Revision | < 0.001 | < 0.001 | ||||||||
Yes | 10 | 10.5% | 21 | 53.8% | 7 | 11.1% | 20 | 54.1% | ||
No | 85 | 89.5% | 18 | 46.2% | 56 | 88.9% | 17 | 45.9% | ||