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Tardy Spinal Cord Compression without Bone Cement Leakage after Kyphoplasty - A Report of 3 Cases -

  • Journal of Korean Society of Spine Surgery
  • Abbr : J Kor Spine Sur
  • 2010, 17(2), pp.104-110
  • Publisher : Korean Society Of Spine Surgery
  • Research Area : Medicine and Pharmacy > Orthopedic Surgery

안동기 1,  최대정 1,  박훈석 1,  유창욱 2

1서울성심병원
2서울성심병원 정형외과

Accredited

ABSTRACT

Study Design: This is a case report Objective: We report here on three cases of late spinal cord compression without bone cement leakage after kyphoplasty from the view point of the common characteristics, the suspected etiologies and the performed treatments, and we propose a technique to prevent this kind of complication. Summary of the Literature Review: Kyphoplasty is widely accepted as an effective and safe treatment for osteoporotic vertebral compression fracture (VCF). Complicated compression fractures and even bursting fractures with a compromised spinal canal are currently indicated for kyphoplasty. The wide spread application of kyphoplasty may be mainly due to reducing the complication rates associated with cement leakage and possible restoration, even though partially, of a vertebral kyphotic deformity. Materials and Methods: we experienced three cases of newly emerged complications that caused delayed neurologic compromise after uneventful kyphoplasty without any immediate neurologic deficits. MR imaging was done to find the pathologic regions and surgical treatment was performed. Results: Refracture of an augmented vertebra at the conus medullaris level can cause late occurring spinal cord compression without compromising the spinal canal. Posterior instrumentation and posterior fusion with posterior decompression were effective treatments. Conclusions: The anatomical peculiarity of the conus medullaris and the dynamic irritation of the spinal cord by a bone cement mass after refracture of an augmented vertebral body can be the causes of late spinal cord compression after kyphoplasty. The neurologic symptoms were treated by posterior decompression and fusion. This kind of complication can be prevented by injecting a sufficient amount of bone cement with a shape to support both endplates.

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