RESUMO
Objective To explore the clinical experience and surgical method of the repairment of frontal plantar tissue defects by using "tennis racket"-like flap with the medial plantar retrograde,and to study the reliability in the clinical application of the medial plantar retrograde flap.Methods From June 2011 to June 2016,"tennis racket"-like flap with the medial plantar retrograde was used to repair the frontal plantar tissue defects in 10 cases.The cutting range of flap was from 3.5 cm × 2.0 cm to 8.0 cm x 4.0 cm in size;in all patients the donor area was covered by skin grafts.Results All flaps survived and wounds healed by first intention.In 10 patients the donor sites healed primarily with a straight scar,and the appearance and texture of the flaps were satisfactory.All patients were followed up from 6 to 24 months (mean 12 months).According to the Chinese foot function evaluation standard trial evaluation,the outcomes were excellent in 9 cases,good in 7 cases,and medium in 2 cases.Conclusions "Tennis racket"-like flap with the medial plantar retrograde is less anatomic variation with reliable blood supply,and sensory recovery is quick;the donor site is a small crater and cicatrial contractures are light;the cost is low.All patients are treated on one session and therefore it is an ideal method for the repairment of frontal plantar tissue defects.
RESUMO
Objective To investigate the expression of phosphorylated mammalian target of rapamycin (p-mTOR) and phosphorylated eukaryotic translation initiation factor 4E binding protein 1 (p-4EBP1) in pathologic scar,and comprehend its role and significance in the pathologic scar formation.Methods SP immunohistochemical method was used to detect the expression of p-mTOR and p-4EBP1 in 20 cases of keloid,20 cases of hypertrophic scar,20 cases of non-pathologic scar and 20 cases of normal skin tissue.The positive rates of expression in different tissues were analyzed,and the relationship in pathological scar was explored.Results The positive rates of p-mTOR and p-4EBP1 in keloidand hypertrophic scar were 75.0％ (15/20),60.0％ (12/20) and 60.0％ (12/20),50.0％ (10/20),nom-pathologic scars were 20％ (4/20),10％ (2/20);normal skin tissue were 10％ (2/20),5％ (1/20),which were higher respectively compared with the two control groups (P＜ 0.05);there was a highly positive correlation between p-mTOR and p-4EBP1 expression in pathologic scar (r=0.323,P＜0.05).Conclusions p-mTOR and p-4EBP1 might be involved and cooperated in promoting the progress of pathologic scars.