The affect of L4-S1 Dynesys® dynamic stabilization versus fusion on lumbar movement and its relationship with lumbar degeneration: a retrospective examine.
J Orthop Surg Res. 2017 Jun 26;12(1):99
Authors: Zhang C, Wang L, Hou T, Luo L, Zhao C, Gan Y, Zhou Q, Li P
BACKGROUND: The goal of this examine is to guage the efficacy of Dynesys® posterior dynamic stabilization (PDS) within the therapy of L4-S1 degenerative ailments and to evaluate the affect of postoperative movement on lumbar degeneration.
METHODS: Included on this retrospective examine have been sufferers with L4-S1 degenerative illness who underwent fusion or PDS from September 2010 to September 2014. Medical outcomes have been assessed by preoperative and postoperative visible analog scale (VAS) and Oswestry Incapacity Index (ODI). Preoperative and postoperative X-rays assessed vary of movement (ROM) of the non-surgical and surgical ranges and complete lumbar. MRI assessed degeneration of non-surgical ranges.
RESULTS: A complete of 56 consecutive sufferers have been divided into two teams: group A, PDS, and group B, fusion. Affected person demographics and baseline traits have been comparable within the two teams. In each teams, there was a major distinction between preoperative and postoperative VAS and ODI scores (P?<?zero.05). Nonetheless, there was a major distinction in a 6-month follow-up ODI between the 2 teams (P?<?zero.05). X-rays confirmed PDS sufferers partially maintained surgical stage ROM and non-surgical stage ROM elevated lower than within the fusion group. MRI confirmed adjoining section degeneration (ASD) in each teams, and sufferers whose preoperative L3-Four Pfirrmann classification was greater than grade 2 had extra ASD than decrease than grade 2.
CONCLUSION: PDS can preserve surgical stage ROM and had much less affect on complete and non-surgical stage ROM. Following PDS, sufferers recovered sooner and had a greater lumbar operate. It could be a better option for multi-level lumbar degenerative ailments.
PMID: 28651616 [PubMed – indexed for MEDLINE]