Donor site morbidity after vascularized fibula free flap: gait analysis during prolonged walk conditions

Publication date: March 2018
Source:International Journal of Oral and Maxillofacial Surgery, Volume 47, Issue 3
Author(s): N. Hadouiri, D. Feuvrier, J. Pauchot, P. Decavel, Y. Sagawa
The aim of this study was to determine the effect of vascularized fibula free flap (VFFF) harvest on gait variables during the six-minute walk test (6MWT). Eleven patients who had undergone VFFF harvest and 11 healthy peers participated in this case–control study. The main evaluation consisted of the collection of gait variables using the GAITRite system during three periods of the 6MWT: beginning (0–1min), middle (2:30–3:30min), and end (5–6min). The 6MWT was significantly shorter in the VFFF group than in the reference group (−31%, P<0.001). Most gait variables differed significantly between the groups for each period (P-value range 0.04–0.0004), including toe in/out on the operated side (P-value range 0.005–0.01). The increase in toe in/out on the operated side suggests a functional modification caused by an imbalance of the agonist–antagonist muscles. On comparison of the different periods, gait velocity decreased between the beginning and middle periods and increased between the middle and end periods in both groups. However, a significantly lower velocity between the beginning and end periods was found only for the VFFF group (P=0.026), suggesting an alteration in physical management. In conclusion, these results suggest that VFFF harvesting could alter gait and joint integrity.



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