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Structural Joints: Synovial Joints

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Spinal Nerves: Plexus II

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Related Experiment Video

Updated: May 15, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
05:44

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach

Published on: October 20, 2023

Lumbar synovial cysts.

Andreas F Mavrogenis1, Panayiotis J Papagelopoulos, George S Sapkas

  • 1First Department of Orthopaedics, Athens University Medical School, Athens, Greece.

Journal of Surgical Orthopaedic Advances
|January 19, 2013
PubMed
Summary

Lumbar synovial cysts, often at L4-L5, can be treated with cyst excision and spinal fusion. This surgical approach yielded good or excellent results in 83% of patients, with fusion recommended to prevent recurrence.

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Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability
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Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability

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Last Updated: May 15, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
05:44

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach

Published on: October 20, 2023

Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability
11:30

Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability

Published on: July 25, 2025

Area of Science:

  • Neurosurgery
  • Orthopedic Surgery
  • Spinal Imaging

Background:

  • Synovial spinal cysts commonly occur in the lumbar spine, particularly at the L4-L5 level.
  • Magnetic resonance imaging (MRI) is the preferred diagnostic tool for suspected synovial cysts.

Purpose of the Study:

  • To evaluate the efficacy of surgical treatment for lumbar synovial cysts.
  • To assess outcomes and complications associated with cyst excision and spinal fusion.

Main Methods:

  • A cohort of 24 patients with lumbar synovial cysts underwent cyst excision with nerve root decompression via facetectomy.
  • Primary posterolateral spinal fusion was performed in conjunction with cyst excision.
  • Histological analysis confirmed synovial tissue in 18 of the excised cysts.

Main Results:

  • The most frequent cyst location was the L4-L5 segment.
  • At a mean 12-month follow-up, 83% of patients reported excellent or good outcomes.
  • Minor complications included dural tear (2 patients) and wound dehiscence (1 patient).

Conclusions:

  • Surgical excision combined with facetectomy is necessary to prevent synovial cyst recurrence.
  • Primary spinal fusion is recommended due to facet joint disruption and instability associated with synovial cysts.