French experience of spinal surgery in patients with type II SMA

Researchers at the Centre de Référence des maladies neuromusculaires at Trousseau Hospital in Paris have studied data from patients with SMN1 type II-related proximal spinal muscular atrophy operated on for spinal deformity:

  • the study included 25 patients operated on between 2009 and 2022 and divided into two groups,
  • receiving either magnetic growth rods (MCGR type) (17/25) or posterior spinal arthrodesis (AVP) (9/25),
  • surgery was performed on average slightly earlier in the MCGR group (9.7 years versus 12.6 years),
  • correction of spinal deformity was slightly better with arthrodesis (55% vs. 44%),
  • surgery was well tolerated (no need for blood transfusions, and identical impact on vital capacity pre- and post-operatively).

The authors emphasise the value of fixation in combating pelvic obliquity.

 

Growth-friendly Technique or Posterior Spinal Fusion With T-construct Pelvic Fixation in Nonambulatory Spinal Muscular Atrophy With Severe Scoliosis. Gaume M, Denamur S, Aubertin G et al. J Pediatr Orthop. 2025 May