胫骨远端Pilon骨折的切开复位内固定术
Open Reduction and Internal Fixation of Distal Tibial Pilon Fractures.
作者信息
Carter Thomas H, Duckworth Andrew D, Oliver William M, Molyneux Samuel G, Amin Anish K, White Timothy O
机构信息
Edinburgh Orthopaedic Trauma, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
出版信息
JBJS Essent Surg Tech. 2019 Sep 11;9(3):e29. doi: 10.2106/JBJS.ST.18.00093. eCollection 2019 Jul-Sep.
Intra-articular fractures of the distal end of the tibia, more commonly referred to as pilon fractures, account for approximately 5% to 7% of all tibial fractures. Type-C fractures present a unique surgical challenge: a total articular fracture contained within a vulnerable soft-tissue envelope. Treatment options include internal fixation, external fixation with or without limited internal fixation, and primary ankle arthrodesis. The management, and particularly the timing, of surgery is often dictated by the patient's general state of health, soft-tissue condition, and fracture comminution as well as the experience of the surgeon. The surgical goals are to reconstruct the articular surface of the plafond, restore limb alignment, and protect the soft-tissue envelope. Since the publication of the seminal paper by Sirkin et al. in 1999, it has become orthopaedic orthodoxy to stage the surgery of pilon fractures, adopting a so-called span, scan, and plan approach. We more commonly operate early, and in a recently published retrospective review of 102 type-C pilon fractures in 99 patients, 73 patients (73 fractures; 71.6%) underwent primary internal fixation. Outcomes were equivalent to the results of a staged protocol: 36 complications in 28 patients (28 fractures; 27.5%), with superficial (n = 9) and deep (n = 9) infection being the most common. Forty-one fractures (40.2%) required at least 1 additional operation, with removal of symptomatic metalwork being the primary indication (n = 30). No patient required an amputation. At a mean follow-up of 6 years, both the mean Foot and Ankle Disability Index (FADI) and mean Foot and Ankle Outcome Score (FAOS) were 76 (range, 0 to 100). Median patient satisfaction was 7 of 10. The results demonstrated a satisfactory outcome following primary internal fixation in appropriately selected patients. This instructional video outlines the surgical technique used. The key steps of the procedure are (1) preoperative planning with assessment of imaging and soft tissues; (2) application of a thigh tourniquet and placement of the patient predominantly in the supine position, unless the fracture configuration requires a prone position; (3) intraoperative use of a spanning external fixator; (4) careful exposure of the distal end of the tibia, dictated by the fracture configuration, with the anterolateral, anteromedial, and direct medial approaches most commonly used, elevating full-thickness tissue flaps wherever possible; (5) fracture reduction and fixation through a joint arthrotomy and fracture windows, allowing visualization of the articular margins, followed by initial Kirschner wire stabilization and definitive lag screw fixation; (6) application of a low-profile, locking or nonlocking plate in either buttress or bridging mode, joining the articular-metaphyseal block to the distal tibial diaphysis; (7) fixation of an associated fibular fracture, typically with intramedullary nailing and removal of the external fixator; (8) layered closure according to surgeon preference; and (9) postoperative protocol, consisting of a removable orthosis with a strict non-weight-bearing restriction for up to 3 months.
胫骨远端关节内骨折,更常被称为Pilon骨折,约占所有胫骨骨折的5%至7%。C型骨折带来了独特的手术挑战:整个关节面骨折包含在脆弱的软组织包膜内。治疗选择包括内固定、带或不带有限内固定的外固定以及一期踝关节融合术。手术的管理,尤其是手术时机,通常取决于患者的总体健康状况、软组织情况、骨折粉碎程度以及外科医生的经验。手术目标是重建踝关节面、恢复肢体对线并保护软组织包膜。自1999年Sirkin等人发表开创性论文以来,分期进行Pilon骨折手术已成为骨科的正统做法,采用所谓的跨度、扫描和计划方法。我们更常早期手术,在最近发表的对99例患者的102例C型Pilon骨折的回顾性研究中,73例患者(73处骨折;71.6%)接受了一期内固定。结果与分期方案的结果相当:28例患者(28处骨折;27.5%)出现36例并发症,最常见的是表浅感染(9例)和深部感染(9例)。41处骨折(40.2%)至少需要再进行1次手术,主要指征是取出有症状的金属植入物(30例)。没有患者需要截肢。平均随访6年时,足部和踝关节残疾指数(FADI)平均值和足部与踝关节结果评分(FAOS)平均值均为76(范围为0至100)。患者满意度中位数为10分中的7分。结果表明,在适当选择的患者中,一期内固定后结果令人满意。本教学视频概述了所使用的手术技术。该手术的关键步骤包括:(1)术前通过评估影像学和软组织进行规划;(2)应用大腿止血带,除非骨折形态需要俯卧位,患者主要置于仰卧位;(3)术中使用跨关节外固定架;(4)根据骨折形态仔细显露胫骨远端,最常用的是前外侧、前内侧和直接内侧入路,尽可能掀起全层组织瓣;(5)通过关节切开术和骨折窗口进行骨折复位和固定,以便观察关节边缘,随后先用克氏针临时固定,再用拉力螺钉进行确定性固定;(6)以支撑或桥接模式应用低轮廓锁定或非锁定钢板,将关节-干骺端骨块与胫骨远端骨干连接;(7)固定相关腓骨骨折,通常采用髓内钉固定并拆除外固定架;(8)根据外科医生的偏好分层缝合;(9)术后方案,包括使用可拆除支具,严格限制负重3个月。