Meyerding classification of spondylolisthesis classifies Grade IV as slippage of:
- A 76–100% slip ✓
- B 0–25% of the vertebral body width
- C 26–50% slip
- D 51–75% slip
Correct answer: A. 76–100% slip
Explanation
Meyerding classification grades spondylolisthesis by percentage of forward slippage of the upper vertebral body over the lower: Grade I = 0–25%, Grade II = 26–50%, Grade III = 51–75%, Grade IV = 76–100%, Grade V (spondyloptosis) = >100% (complete displacement). Grade IV represents 76–100% anterior translation. Isthmic spondylolisthesis (defect at pars interarticularis) at L5–S1 is the commonest type causing symptoms in young adults. High-grade slips (III/IV) with neurological symptoms require surgical spino-pelvic reconstruction and fusion.
Reference: Maheshwari Essential Orthopaedics, 6th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.