SPM Differences in Gait Pattern of Women After Total Hip Replacement: A Longitudinal Study

Area of Science:

• Orthopedics
• Rehabilitation Medicine
• Biomechanics

Background:

• Total Hip Replacement (THR) is a common surgery for hip osteoarthritis.
• Post-surgical gait recovery and its influencing factors require further investigation.
• Understanding gait adaptations after THR is crucial for optimizing patient outcomes.

Purpose of the Study:

• To analyze gait pattern changes in women following unilateral THR.
• To evaluate the effectiveness of monitored rehabilitation programs.
• To identify critical time points for gait recovery using Statistical Parametric Mapping (SPM).

Main Methods:

• Longitudinal study of 32 women post-cementless THR.
• Gait analysis preoperatively and at 6 weeks, 3, 6, and 12 months post-surgery.
• Statistical Parametric Mapping (SPM{t}) applied to repeated measures ANOVA for kinematic and spatio-temporal data.

Main Results:

• Significant improvements in spatio-temporal parameters including velocity, stride length, and step length (p < 0.05).
• Reduced cycle time indicating enhanced gait efficiency.
• SPM{t} revealed significant kinematic changes in hip, knee, and pelvic motion, particularly between 6 weeks and 3 months post-THR.

Conclusions:

• Gait parameters show substantial improvement within the first year after THR.
• The initial six months are critical for significant gait recovery.
• SPM analysis offers a valuable tool for assessing subtle gait adaptations and refining rehabilitation protocols.