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Motor Weakness of Right Ankle Dorsiflexion Caused by Increasing Size of Sacroiliac Joint Cyst after Posterior Lumbar Interbody Fusion in a Patient with Spinal Stenosis - A Case Report -

  • Journal of Korean Society of Spine Surgery
  • Abbr : J Kor Spine Sur
  • 2015, 22(4), pp.178-182
  • Publisher : Korean Society Of Spine Surgery
  • Research Area : Medicine and Pharmacy > Orthopedic Surgery

Ji Eun Kwon 1 Young Joon Ahn 1 Bo Kyu Yang 1 이승림 1 Se Hyuk Im 1 Ye Hyun Lee 1 Hae Min Kim 1

1국립경찰병원

Accredited

ABSTRACT

Study Design: Case report Objectives: To report a case of motor weakness caused by the increasing size of a sacroiliac joint cyst after spinal fusion. Summary of Literature Review: There have been no reports on the increased size of a sacroiliac joint cyst and motor weakness after spinal fusion. Materials and Methods: A 63-year-old female was admitted with low back pain and right sciatica. Magnetic resonance imaging (MRI) findings showed the spinal canal narrowing at L4–5 and a cystic lesion on the right sacroiliac joint. After surgery, the symptoms were relieved. Results: One month after the operation, motor function had worsened to grade 4. Follow-up MRI revealed an increase in the size of the cystic lesion. Selective nerve root blocks were performed. There was gradual improvement, and the motor grade reached grade 5 seven months after the operation. Conclusions: We recommend that surgeons evaluate the adjacent segmental lesion by MRI before performing spinal fusion.

Citation status

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