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. 2021 Aug 4;16:477. doi: 10.1186/s13018-021-02622-z

Table 3.

Impaction and shortening at 3 and 6 months

Characteristics Modality All (n = 63) TS (n = 32) DHS (n = 16) FNS (n = 15) P value
Impaction
 3 months Mean (sd) 5.2 (4.8) 5 (4.5) 5.4 (6) 5.5 (4.4)
Median (IQR) 4.9 (1.7–7.2) 4.9 (2.5–6.6) 2.6 (1.4–7.7) 5.4 (1.8–9.4)
Range 0–21.1 0–18 0.2–21.1 0.2–13.1
Missing 15 10 3 2
 6 months Mean (sd) 5.4 (5.2) 5.4 (4.8) 5.6 (5.9) 5 (6.7)
Median (IQR) 4.7 (2.6–6.9) 4.7 (3.2–5.9) 4.5 (2–8.1) 7.3 (3.4–8.9)
Range − 4.8–19.6 0–19.6 − 2.9–18.7 − 4.8–10.1
Missing 30 13 6 11
 Global 0.872
 Δ 3–6 months 0.979
Shortening
 3 months Mean (sd) 8.6 (8.2) 8.4 (7.0) 8.3 (11.9) 9.3 (6.0)
Median (IQR) 8.3 (2.4–12.1) 8.6 (4.3–12.6) 8.4 (0.3–11.4) 8.3 (5.7–13.3)
Range − 6.2–42 − 6.2–22.3 − 4.1–42 1.1–22
Missing 15 10 3 2
 6 months Mean (sd) 7.0 (9.0) 8.1 (10.3) 4.9 (7.9) 6.7 (4.0)
Median (IQR) 6 (1.2–10.5) 5 (2.5–11.4) 6.7 (− 2.3–12.4) 7.8 (4.9–9.6)
Range − 5.8–38.9 − 3.9–38.9 − 5.8–13.6 1.2–10.1
Missing 30 13 6 11
 Global 0.982
 Δ 3–6 months 0.218

TS triple screw, DHS dynamic hip screw system, FNS femoral neck system