. 2013 Oct 27;22(6):1415–1423. doi: 10.1007/s00167-013-2735-1

Table 5.

Radiographic outcome of HTO surgery

Outcomes	Study group (n = 20) Mean ± SD	Control group (n = 20) Mean ± SD	p value^a
Pre-operative FTA (°)	168.7 ± 2.2	170.7 ± 2.6	n.s.
Post-operative FTA (°)	181.8 ± 1.9	182.2 ± 2.5	n.s.
Correction angle^a (°)	12.45 ± 1.50	11.75 ± 1.3	n.s.
Union rate^b (%)	100 %	100 %	n.s.

FTA femorotibial angle

^aCorrection angle = post-operative FTA − pre-operative FTA

^bUnion rate = evidence of a radiographic bridging callus or trabeculae between fragments at 1 year post-operatively