Jeyaraj Priya
Department of Oral and Maxillofacial Surgery, Military Dental Centre, Secunderabad, Telangana, India.
Ann Maxillofac Surg. 2021 Jan-Jun;11(1):195-213. doi: 10.4103/ams.ams_275_20. Epub 2021 Nov 6.
Extreme forces directed towards the centre of the facial region can produce devastating injuries, with disruption of the mandible, maxilla and naso-orbito-ethmoid complex, with or without frontal bone involvement. The magnitude and trajectory of the force and nature of the impacting object, dictate the degree of displacement and comminution of the craniomaxillofacial skeletal components, as well as the extent of soft tissue loss sustained.
DIAGNOSIS & CHALLENGES: To elucidate various challenges faced in the management of four cases of extreme craniomaxillofacial injuries, caused by centrally directed forces of rather unusual etiologies, namely, a traversing bullet, a bamboo rod, a heavy iron cattle tethering peg and a metal electrical pole. In each of the cases, the force of impact resulted in splitting and splaying apart of the facial skeleton, with a resultant increase in its transverse width, and an ensuing severe facial deformity and functional debility.
RATIONALE & INTERVENTIONS: A ߢBottom-up, Outside-in' surgical sequence was employed to carry out reduction, fixation and reconstruction of the deranged maxillofacial skeletal architecture and restoration of the soft tissue morphology.
OUTCOMES & LESSONS: The transverse dimensions of the flared out facial frames could be re-established and restored to their pre-trauma status successfully in all the cases, thereby achieving excellent esthetic and functional outcomes. Despite the extensive and serious nature of the injuries sustained, gross residual craniofacial defects, deformities and asymmetries, as well as debilitating functional deficits, could be effectively and successfully averted.
指向面部区域中心的极端外力可造成毁灭性损伤,导致下颌骨、上颌骨及鼻眶筛复合体断裂,伴或不伴有额骨受累。外力的大小、轨迹以及撞击物体的性质,决定了颅颌面骨骼成分的移位和粉碎程度,以及软组织损伤的范围。
阐述在处理4例由非常规病因的中心性外力导致的极端颅颌面损伤时所面临的各种挑战,这些病因分别为一枚贯穿子弹、一根竹竿、一根沉重的铁制牛拴桩和一根金属电线杆。在每一例中,撞击力均导致面部骨骼裂开并向外展开,致使其横向宽度增加,进而造成严重的面部畸形和功能障碍。
采用“自下而上、由外向内”的手术顺序,对紊乱的颌面骨骼结构进行复位、固定和重建,并恢复软组织形态。
在所有病例中,均成功地重新建立并恢复了向外扩张的面部框架的横向尺寸,使其恢复到创伤前状态,从而取得了极佳的美学和功能效果。尽管所受损伤广泛且严重,但仍有效且成功地避免了明显的残余颅面缺损、畸形和不对称,以及使人衰弱的功能缺陷。