Abstract：Objective To report the clinical results of the coverage of a large sacral pressure sores with the butterfly flap.Methods Between March 2006 and October 2010，6 cases a large sacral pressure sores(5 men，1 women)were reconstructed with the technique.They ranged in age from 22 to 58 years(mean 38).Of the 6 cases，3 cases were complete spinal cord injury.Two were burn injury.One was cerebral infarction.All of the patients had stage Ⅳ decubitus ulcers that extended to the bone.The pressure sores ranged in size from 12 cm×14 cm to 13 cm×18 cm.Each flap was pedicled on the fourth lumbar artery perforators，The flaps designed with the axis obique to the anterior superior iliac spine.The configuration of the flaps resembles a butterfly.Donor sites defect were closed primarily.Results One case sustained superficial infection postoperative and the gradual wound healed by daily wound dressings.All patients were followed-up from 26 to 52 months(mean，38 months).All flaps survived；hematoma，or wound dehiscence was not observed.No recurrence of the sacral pressure sores occurred with satisfactory clinical results.Conclusion The butterfly flap technique is a reliable surgical method for sacral pressure sores reconstruction.When used in appropriate cases，there is minimal morbidity and the outcome is highly successful.
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