Stair ascent and descent in assessing donor site morbidity following osteocutaneous free fibula transfer : a preliminary study

Purpose: We wanted to investigate the gait kinematic parameters during stairs ascent and descent after a fibula free flap (FFF) removal for facial reconstruction. Methods: Eight patients who underwent facial reconstruction with FFF ascended and descended three standard steps. Their movements were recorded by a motion analyzer; gait kinematic parameters were obtained and compared to those calculated in eight control subjects. Results: Stride time, percentage of swing and support phases did not differ among healthy or operated limb, and control subjects (Kruskal Wallis, p>0.05). No significant differences were found for hip and knee movements, pelvis rotation and tilt, and body center of mass displacements. During stair descent, the patients had a significantly larger pelvis inclination than the control subjects (p<0.05). Conclusion: No functional limitations during stair performance were found. The only significant difference could indicate a minor control of the pelvis, and should be used to define specific rehabilitative interventions.