Effect of length-width ratio on partial necrosis in distally based sural neurofasciocutaneous flap: 157 cases / 中南大学学报(医学版)

ABSTRACT

OBJECTIVE@#To explore the effect of length-width ratio (LWR)on partial necrosis in distally based sural neurofasciocutaneous flap.@*METHODS@#Clinical data and operative pictures of 157 distally based sural neurofasciocutaneous flaps were reviewed and analysed. LWR of the flaps ranged from 2.831 to 7.141. Based on the LWR of the flaps, the flaps were divided into 5 groups Group A(LWR≤31), Group B(310.05). Partial necrosis ratio was higher in Group D than that in Group C(P<0.05). It was lower in the LWR<51 group (Group A+Group B+Group C) (6.8%, 6/88) than that in the LWR≥51 group (Group D+Group E) (17.4%, 12/69) (P<0.05).@*CONCLUSION@#When LWR of the flap is less than 51, probability of partial necrosis occurring in distally based sural neurofasciocutaneous flaps is low, and the flap can survive more reliably. The maximum LWR of the surrival flaps can reach 6-71.