Influence of surgery involving tendons around the knee joint on ankle motion during gait in patients with cerebral palsy

Table 3 Linear mixed model describing estimated and fixed effects on ankle kinematics after surgery involving tendons around the knee

Effect	Peak ankle dorsiflexion at IC			Peak ankle dorsiflexion during stance			Peak ankle dorsiflexion during swing			Dynamic ankle ROM
Effect	Estimate	CI	P-value	Estimate	CI	P -value	Estimate	CI	P -value	Estimate	CI	P -value
Intercept	13.8	−2.4– 30.1	0.091	25.6	8.4–42.7	0.005	8.0	−1.4–17.5	0.094	31.7	11.8–51.6	0.003
Age	−0.3	−0.9 – 0.3	0.314	−0.1	−0.7 – 0.5	0.749	− 0.3	− 0.6 – 0.1	0.119	− 0.2	− 0.9 – 0.5	0.583
Laterality (Right)	1.5	−4.0 – 6.9	0.594	1.2	−4.5 – 7.0	0.669	−1.0	−4.2 – 2.1	0.519	0.6	−6.1 – 7.3	0.862
DHL only	6.2	0.5–11.8	0.032	6.8	0.9–12.7	0.025	−1.0	−4.3 – 2.3	0.540	8.2	1.3–15.1	0.020
^aKnee flexion at IC	0.2	−0.6 – 1.1	0.603	−0.5	−1.4 – 0.4	0.287	−0.7	−1.8 – 0.3	0.179	−0.4	−0.9 – 0.1	0.152
^aPeak knee flexion during swing	0.0	−0.4 – 0.4	0.906	0.3	−0.1 – 0.7	0.132	0.0	−0.5 – 0.5	0.952	0.4	0.2–0.6	< 0.001
^aTotal knee ROM	−0.4	− 0.7 – − 0.1	0.016	−0.6	−1.0 – − 0.3	< 0.001	−0.5	− 1.0 – − 0.2	0.006	-0.2	−0.4 – 0.0	0.038
^aKnee flexion in terminal swing	−0.2	−1.0 – 0.6	0.618	0.3	−0.6 – 1.1	0.515	0.6	−0.4 – 1.5	0.230	0.2	−0.2 – 0.7	0.289