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題 名 | Reconstruction of Large Orbital Fractures with High-Density Porous Polyethylene Channel Implants=以高密度多孔性聚乙烯管道性植入物(High-Density Porous Polyethylane Channel Implant)重建大範圍的眼窩骨折 |
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作 者 | 賴昱宏; 張丞賢; 王惠珠; | 書刊名 | 中華民國眼科醫學會雜誌 |
卷 期 | 38:1 1999.03[民88.03] |
頁 次 | 頁18-25 |
分類號 | 416.75 |
關鍵詞 | 植入物; 眼窩骨折; Blowout fracture; Orbital floor and medial fractures; Porous polyethylene; Orbital reconstruction; |
語 文 | 英文(English) |
中文摘要 | 包含眼窩骨底板與內側壁(orbital floor and medial wall)的大範圍的眼窩骨 折不易以如矽橡膠 (Silastic plates) 等較軟材質的植入物加以矯正。 因此我們需要一個 較硬但又具有延展性的植入物。 高密度多孔性聚乙烯管道性植入物 ( highdensity porous polyethylene channel implants; HDPE channel implants) 具有平行管道的構造,可置入 小接骨板 (miniplates) 藉以固定。 HDPE 具有羥磷灰石 (hydroxyapatite) 的特性,可容 血管與組織長入。 我們使用 HDPE channel implants 來重建四位有眼窩骨底板與內側壁骨 折的病人。這四位均是男性,年齡分別是 28、41、44 與 74 歲。手術是藉由結膜切開術與 外皆切開術 (con]unctival incision & lateral cantholysis)。把疝脫出的組織拉回復位 之後,依照眼眶骨缺損的形狀把 HDPE channel implant 加以塑造成形。當植入物放至適當 位置,再拍置入 channel 中的 miniplate 固定到下眼眶緣 (inferior orbital rim)。 平 均追�j的時間為 6.25 個月。沒有感染、植入物移位、植入物凸出或視力喪失等併發症。三 個病人在術前有眼球凹陷 (enopntnalmos) 的情形,在術後均得到了改善。四位病人其眼球 轉動的限制 (eyeball duction limitation) 在術後也都得到改善。術後在視野中心 30 度 的範圍內 (central 300 visual field) 都沒有複影的情形。雖然我們需要更長的追�j期與 更多的病例數來藉以評估 HDPE channel implant 在重建眼窩骨折應用上的效度,本文確也 顯示出其潛力。 |
英文摘要 | Large orbital fractures involving floors and medial walls are difficult to correct with soft implants, such as thin Silastic plates, instead, a rigid but malleable implant has to be used. The high-density porous polyethylene (HDPE) is constructed with parallel channels that accept miniplates or microplates for fixation. The HDPE has the characteristics of hydroxyapatite, allowing rapid vascularization and tissue ingrowth. We used the implant to reconstruct 4 cases of large orbital fractures, involving floor and medial fractures. All 4 patients were male, aged 28, 41, 44, and 74 years old, respectively. All 4 cases were approached by a conjunctival incision with lateral cantholysis. After hemiated tissue being pulled back from the sinuses, the HDPE channel implants were shaped and contoured to fit the bony defect of floor and medial wall. After the implant being properly positioned, the miniplate inserted in the channel was fixed to the inferior orbital rim. In an average follow-up of 6.25 months, no complication such as visual loss, infection, migration, or extrusion occurred. Three patients had preoperative enophthalmos, and postoperatively, enophthalmos resolved in 2 cases and improved in another one. Eyeball duction limitation improved in all four cases. No binocular diplopia existed in central 30-degrees of visual field. Although a longer follow-up and larger number of cases are required to evaluate the efficacy of the HDPE channel implant to reconstruct large orbital fractures, this series has shown its potential. |
本系統中英文摘要資訊取自各篇刊載內容。