Clinical Study

Outcome of Fetuses with Diagnosis of Isolated Short Femur in the Second Half of Pregnancy

Table 1

Outcome of fetuses and relative risk according to the femur length Z-score.

𝑁 >2 SD (Control)
637
(Group 1)
114
(Group 2)
27
(Group 3)
15

Outcome

SGA (183)
IUGR (105)
AUD (78)
122 (19.1%)
63 (9.9%)
49 (7.7%)
44 (38.6%)
30 (26.3%)
17 (14.9%)
11 (40.7%)
7 (25.9%)
7 (25.9%)
6 (40.0%)
5 (33.3%)
5 (33.3%)

Relative risk

SGA
IUGR
AUD
RR = 1
RR = 1
RR = 1
RR = 2.0
RR = 2.6
RR = 1.9
RR = 2.1
RR = 2.6
RR = 3.4
RR = 2.1
RR = 3.4
RR = 4.3

SGA: small for gestational age, IUGR: intrauterine growth restriction, AUD: abnormal umbilical Doppler, DS: Down’s syndrome, SKD: skeletal dysplasia, and SD: standard deviation.Number of fetuses with DS or SKD in any group was 0. Relative risk close to 1.