撞击力的中心超过眶外环时,可引起颧骨额突和蝶骨眶板的骨折和错位,这两个组成眶外侧壁的主要部分,可分别或整个插入眼眶后部引起眼球或视神经的严重损伤,试图用标准的眶周切口处理碎骨的方法,可使视神经损伤加重,一个安全的进路是通过半冠切口暴露颧骨眶外侧区,这样在直视下处理碎骨,眼球不承受回缩压力。半冠切口是从耳轮沿发际内弧形切至额部中线,颞线上深达骨膜,颞线下达颞线筋膜,骨膜下分离从额骨至眶上缘,筋膜下分离从颞肌到颧弓和眶外缘,这时额颞皮瓣的 The center of the impact force over the orbital ring, can cause the front of the cheekbones and fossa orbital plate fracture and dislocation, the two components of the orbital wall of the main part, respectively, or the entire orbital insertion of the eye or optic nerve Severe damage, try to use standard periorbital incision bone fragments can make the optic nerve injury, a safe way is to expose the lateral crest of the zygomatic bone through the half-crown incision, so that the treatment of bone fragments under direct vision, the eye is not To withstand the pressure of retraction. Half-notch incision from the helix along the hairline cut to the forehead midline, the temporal line up to the periosteum, the temporal line issued temporal fascia, subperiosteal separation from the frontal bone to the superior orbital margin, subfascial separation from the temporal Muscles to the zygomatic arch and orbital rim, when the frontotemporal flaps