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Advanced interspinous ligament degeneration (ISLD) was more prevalent in patients with low back pain (LBP). This imaging study found a higher incidence of severe ISLD in LBP patients, often associated with more severe disc degeneration.

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Area of Science:

  • Radiology and Imaging
  • Orthopedics
  • Spine Degeneration

Background:

  • Low back pain (LBP) is a common condition with multifactorial causes.
  • Interspinous ligament degeneration (ISLD) is increasingly recognized as a potential contributor to LBP.
  • Imaging plays a crucial role in assessing spinal pathologies, including ligamentous changes.

Purpose of the Study:

  • To evaluate the imaging characteristics of interspinous ligament degeneration (ISLD) in patients experiencing low back pain (LBP).
  • To compare the prevalence and severity of ISLD between patients with and without LBP using MRI.
  • To investigate the association between ISLD and lumbar disc degeneration.

Main Methods:

  • Sixty patients with LBP (Group A) and 60 age- and sex-matched controls (Group B) were recruited.
  • An MRI-based grading system (Type A to D) was used to assess ISLD at multiple lumbar levels.
  • Lumbar disc degeneration was also graded at four lumbar levels for each subject.

Main Results:

  • While mild ISLD (Type A) was most common in both groups, severe ISLD (Type D) was significantly more frequent in patients with LBP (5.4% vs. 1.3%, p<0.05).
  • Patients with Type D ISLD in both groups were older, with significantly higher ages noted in Group A compared to milder ISLD types.
  • Advanced ISLD correlated with increased lumbar disc degeneration, particularly between Type D and Types A/B in the LBP group (p<0.05).

Conclusions:

  • More advanced grades of interspinous ligament degeneration are less common overall but show a higher incidence in patients with low back pain.
  • Severe ISLD is more frequently observed in individuals with LBP and is associated with more pronounced disc degeneration.
  • MRI assessment of ISLD provides valuable insights into spinal degeneration and its potential link to low back pain.