Increase in facet joint loading after nucleotomy in the human lumbar spine
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Increase in facet joint loading after nucleotomy in the human lumbar spine. / Ivicsics, M F; Bishop, N E; Püschel, K; Morlock, M M; Huber, G.
in: J BIOMECH, Jahrgang 47, Nr. 7, 07.05.2014, S. 1712-7.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Increase in facet joint loading after nucleotomy in the human lumbar spine
AU - Ivicsics, M F
AU - Bishop, N E
AU - Püschel, K
AU - Morlock, M M
AU - Huber, G
N1 - Copyright © 2014 Elsevier Ltd. All rights reserved.
PY - 2014/5/7
Y1 - 2014/5/7
N2 - Low-back pain has been related to degenerative changes after nucleotomy. Although several etiologies for pain after nucleotomy have been proposed, there is evidence of pain arising in the facet joints in general, which may be related to changes in load transfer. This study addresses the effect of nucleotomy on facet joint loading. Nine human lumbar motion segments (age: 40-59 years) were loaded in axial compression and extension-flexion. Reaction forces were compared with soft tissue structures sequentially removed. After nucleotomy the facets supported significantly greater load, almost doubling from a median of 8.6% of the applied external force to 15.8%. Force transmission related to the capsular ligament increased significantly from an intact median of 1.2-5.1% after nucleotomy. No correlation was observed between force increase on the facets and the proportion of disc nucleus removed. Even a small quantity of nucleus removal (range: 0.7-1.7g) increased the forces transmitted over the facet joints, both with and without capsular ligaments. This suggests that the proportion of material removed might not be important clinically with regard to facet joint degeneration and pain.
AB - Low-back pain has been related to degenerative changes after nucleotomy. Although several etiologies for pain after nucleotomy have been proposed, there is evidence of pain arising in the facet joints in general, which may be related to changes in load transfer. This study addresses the effect of nucleotomy on facet joint loading. Nine human lumbar motion segments (age: 40-59 years) were loaded in axial compression and extension-flexion. Reaction forces were compared with soft tissue structures sequentially removed. After nucleotomy the facets supported significantly greater load, almost doubling from a median of 8.6% of the applied external force to 15.8%. Force transmission related to the capsular ligament increased significantly from an intact median of 1.2-5.1% after nucleotomy. No correlation was observed between force increase on the facets and the proportion of disc nucleus removed. Even a small quantity of nucleus removal (range: 0.7-1.7g) increased the forces transmitted over the facet joints, both with and without capsular ligaments. This suggests that the proportion of material removed might not be important clinically with regard to facet joint degeneration and pain.
KW - Adult
KW - Biomechanical Phenomena
KW - Diskectomy
KW - Humans
KW - Ligaments, Articular
KW - Low Back Pain
KW - Lumbar Vertebrae
KW - Male
KW - Middle Aged
KW - Spondylosis
KW - Zygapophyseal Joint
U2 - 10.1016/j.jbiomech.2014.02.021
DO - 10.1016/j.jbiomech.2014.02.021
M3 - SCORING: Journal article
C2 - 24661835
VL - 47
SP - 1712
EP - 1717
JO - J BIOMECH
JF - J BIOMECH
SN - 0021-9290
IS - 7
ER -