J Korean Soc Spine Surg.  2009 Sep;16(3):215-221. 10.4184/jkss.2009.16.3.215.

Spinal Arachnoid Cyst: Treated with Pars Osteotomy and Recapping Laminoplasty: Report of 5 Cases

• Park WW
• Ahn SJ
• Ku JG
• Song MH
• Yoo SH
• Kang SW

• KMID: 2003117
• DOI: http://doi.org/10.4184/jkss.2009.16.3.215

Abstract

Spinal arachnoid cysts are a rare disease with an unknown origin. Because of their broad base, a total laminectomy with or without fusion has been the treatment of the choice. We encountered 5 patients with a spinal arachnoid cyst who were treated by recapping laminoplasty after pars osteotomy. This procedure has not been reported in Korea. All patients showed neurological recovery with no recurrence of the cyst. The findings on the stressed plain film confirmed bony union and stability of the posterior element.

Keyword

Arachnoid cyst; Pars osteotomy; Recapping laminoplasty

MeSH Terms

Arachnoid
Arachnoid Cysts
Humans
Korea
Laminectomy
Osteotomy
Rare Diseases
Recurrence

Figure

• 

  Fig. 1. (A) Preoperative MRI and plain X-ray shows type III arachoid cyst from L2 to L5 in the 43-year-old female patient. (B) Intraoperative photograph. we try to remain distal supraspinous ligament attached distal part and complete removal of cyst 9cm in length. (C) Postoperative-6-month X-ray shows good union of pars after recapping and interosseous wiring and pars fixation using screw.

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  Fig. 2. (A) Preoperative MRI shows type I arachnoid cyst from T9 to L2 in the 44-year-old female patient. (B) Intraoperative photograph shows remaing distal supraspinous ligament and wire fixation. (C) Postoperative MRI and X-ray shows complete removal of cyst. (D) Postoperative 3 year after recapping laminoplasty shows complete union at the osteotmy levels and shows no instability.

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  Fig. 3. Schematic diagram of recapping laminoplasty.

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