Frodel J L, Lee S
Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD, USA.
Arch Otolaryngol Head Neck Surg. 1998 Nov;124(11):1219-23. doi: 10.1001/archotol.124.11.1219.
To determine the usefulness of porous high-density polyethylene implants (Medpor) in a variety of facial skeletal deformities and subcutaneous defects, excluding those associated with acute maxillofacial trauma.
Case series.
Academic tertiary care referral center in Baltimore, Md.
Thirty-four patients (age range, 20-74 years) with facial deformities requiring skeletal defect reconstruction or augmentation (38 cases), treated between January 1, 1992, and January 1, 1997. Follow-up ranged from 6 months to 40 months.
Age, type and origin of the deformity treated, type of treatment, and complications.
Types of deformities and defects treated include 7 patients with orbital defects (secondary traumatic or oncologic deformities), 8 with temporal fossa defects, 8 with frontocranial defects, 4 with maxillary or malar defects, 7 with calvarial bone graft donor site defects, 2 with microtia, and 2 with chin deficiency. Forty implants were placed. Complications included implant exposure in 4 patients and inappropriate augmentation in 1 patient (chin implantation).
High-density polyethylene implants offer an excellent alternative to autogenous and other alloplastic materials in reconstruction of many facial defects and deformities. Advantages include its versatility and relatively ideal pore size that allows for excellent soft tissue ingrowth and coverage. Disadvantages include its rigid nature and difficulty in contouring to the surface of complex skeletal structures.
确定多孔高密度聚乙烯植入物（Medpor）在各种面部骨骼畸形和皮下缺损中的应用价值，不包括与急性颌面创伤相关的情况。
病例系列。
马里兰州巴尔的摩的学术三级医疗转诊中心。
34例患者（年龄范围20 - 74岁），患有需要进行骨骼缺损重建或增大的面部畸形（共38例），于1992年1月1日至1997年1月1日接受治疗。随访时间为6个月至40个月。
年龄、所治疗畸形的类型和起源、治疗类型及并发症。
所治疗的畸形和缺损类型包括7例眼眶缺损（继发性创伤或肿瘤性畸形）、8例颞窝缺损、8例额颅缺损、4例上颌或颧骨缺损、7例颅骨骨移植供区缺损、2例小耳畸形和2例颏部凹陷。共植入40枚植入物。并发症包括4例患者出现植入物外露，1例患者（颏部植入）出现隆突不当。
在许多面部缺损和畸形的重建中，高密度聚乙烯植入物是自体材料和其他异体材料的极佳替代物。优点包括其多功能性以及相对理想的孔径，可实现良好的软组织向内生长和覆盖。缺点包括其质地坚硬，难以与复杂骨骼结构的表面轮廓贴合。
