Table 2 Main findings of time distance parameters in the included studies

Mayr 2009 [16]

At 6 weeks postoperatively, the rate of single support of the operated limb increased in the DAA group and at 12 weeks postoperatively, the cadence, stride time and length, and walking speed increased significantly. However, no increase was observed in the ALA group at 6 and 12 weeks after surgery.

Klausmeier 2010 [8]

At 6 weeks postoperatively, single limb support time symmetry improved in the DAA group, but not in the ALA group. Gait velocity and step width were not different between the two groups. At 16 weeks postoperatively, both groups showed improved single limb support time symmetry and gait velocity. The degree of improvement was higher in the DAA group and the step length symmetry in the DAA group also improved

Queen 2011 [1]

There was no statistically significant difference in stance time and swing time between the two groups.

Pospischill 2010 [18]

There was no difference in the time-distance parameters between the two groups at 10 and 12 weeks postoperatively.

Paliery 2011 [22]

The swing phase of the affected limb was significantly longer in the DAA group at 30 days postoperatively, but the other time-distance parameters did not differ between the two groups.

Muller 2012 [19]

There was no difference in gait velocity, cadence, step length, and stance duration between two groups at 3 months postoperatively.

Varin 2013 [24]

At 10 months postoperatively, no differences were found in the time-distance parameters between the two groups compared with the control group.

Martin 2011 [20]

No statistically significant difference was found in cadence and gait velocity between the two groups at 1 year after surgery.

Kiss 2012 [21]

No difference in time-distance parameters was found between the two groups at 1 year postoperatively

Queen 2014 [12]

No difference in stance time, swing time, and step length was detected between two groups at 1 year after surgery.