Maciejczak A, Radek A, Kowalewski J, Palewicz A
Dept. of Neurosurgery and General Surgery, University Hospital of the Military Medical Academy, Lódz, Poland.
Acta Chir Hung. 1999;38(1):83-6.
Cervicothoracic junction and upper thoracic spine down to T4 can be reached through anterior approach via sternotomy. Transsternal approach is the best route to gain access to lesions localized within vertebral bodies of the upper thoracic spine allowing for their resection, interbody fusion and replacement with bone cement. Consecutive modifications of transsternal approach evolved towards less extensive osteotomy from full median sternotomy, through manubriotomy with clavicle resection to partial lateral manubriotomy. Less extensive modifications provide limited lateral exposure of the spine and are more demanding technically. We present two cases of the upper thoracic spine tumours operated on through full medial sternotomy. We believe that median sternotomy has several advantages over less extensive modifications: it is technically simple to perform approach for trained thoracic surgeon, safer as it provides better exposure of the mediastinum and thus sufficient control of great vessels including subclavian ones, gives better exposure of T3, T4 and even T5 vertebral bodies, allows perpendicular sight and attack to anterior surface of the upper thoracic spine and therefore good visualizing of the posterior longitudinal ligament and dura, do not destabilize shoulder girdle nor affect function of the upper limb. Additional caudal exposure of the thoracic spine as down as T5 can be obtained by dissecting a plane between the brachiocephalic vein, vena cava superior and ascending aorta.
通过胸骨切开术的前路可到达颈胸交界处及上胸椎直至T4。经胸骨入路是进入上胸椎椎体病变的最佳途径,便于对病变进行切除、椎体间融合及骨水泥置换。经胸骨入路的连续改良从全正中胸骨切开术逐渐发展为范围更小的截骨术,包括经锁骨切除的胸骨柄切开术,再到部分外侧胸骨柄切开术。范围更小的改良术式虽提供有限的脊柱外侧暴露,但技术要求更高。我们展示了两例通过全正中胸骨切开术治疗上胸椎肿瘤的病例。我们认为,正中胸骨切开术相较于范围更小的改良术式具有多个优势:对于训练有素的胸外科医生而言,该入路操作技术简单;更安全,因为它能更好地暴露纵隔,从而充分控制包括锁骨下血管在内的大血管;能更好地暴露T3、T4甚至T5椎体;允许垂直观察并对上胸椎前表面进行操作,因此能清晰看到后纵韧带和硬脊膜;不会使肩带失稳,也不影响上肢功能。通过在头臂静脉、上腔静脉和升主动脉之间解剖一个平面,可获得额外的向下至T5的胸椎尾侧暴露。