PMID- 24940393
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211021
IS  - 1792-0981 (Print)
IS  - 1792-1015 (Electronic)
IS  - 1792-0981 (Linking)
VI  - 7
IP  - 5
DP  - 2014 May
TI  - Biomechanical analysis of cervical myelopathy due to ossification of the 
      posterior longitudinal ligament: Effects of posterior decompression and kyphosis 
      following decompression.
PG  - 1095-1099
AB  - Cervical ossification of the posterior longitudinal ligament (OPLL) results in 
      myelopathy. Conservative treatment is usually ineffective, thus, surgical 
      treatment is required. One of the reasons for the poor surgical outcome following 
      laminoplasty for cervical OPLL is kyphosis. In the present study, a 3-dimensional 
      finite element method (3D-FEM) was used to analyze the stress distribution in 
      preoperative, posterior decompression and kyphosis models of OPLL. The 3D-FEM 
      spinal cord model established in this study consisted of gray and white matter, 
      as well as pia mater. For the preoperative model, 30% anterior static compression 
      was applied to OPLL. For the posterior decompression model, the lamina was 
      shifted backwards and for the kyphosis model, the spinal cord was studied at 10, 
      20, 30, 40 and 50 degrees  kyphosis. In the preoperative model, high stress distributions 
      were observed in the spinal cord. In the posterior decompression model, stresses 
      were lower than those observed in the preoperative model. In the kyphosis model, 
      an increase in the angle of kyphosis resulted in augmented stress on the spinal 
      cord. Therefore, the results of the present study indicated that posterior 
      decompression was effective, but stress distribution increased with the 
      progression of kyphosis. In cases where kyphosis progresses following surgery, 
      detailed follow-ups are required in case the symptoms worsen.
FAU - Nishida, Norihiro
AU  - Nishida N
AD  - Department of Orthopedic Surgery, Yamaguchi University Graduate School of 
      Medicine, Ube, Yamaguchi 755-8505, Japan.
FAU - Kanchiku, Tsukasa
AU  - Kanchiku T
AD  - Department of Orthopedic Surgery, Yamaguchi University Graduate School of 
      Medicine, Ube, Yamaguchi 755-8505, Japan.
FAU - Kato, Yoshihiko
AU  - Kato Y
AD  - Department of Orthopedic Surgery, Yamaguchi University Graduate School of 
      Medicine, Ube, Yamaguchi 755-8505, Japan.
FAU - Imajo, Yasuaki
AU  - Imajo Y
AD  - Department of Orthopedic Surgery, Yamaguchi University Graduate School of 
      Medicine, Ube, Yamaguchi 755-8505, Japan.
FAU - Yoshida, Yuichiro
AU  - Yoshida Y
AD  - Department of Orthopedic Surgery, Yamaguchi University Graduate School of 
      Medicine, Ube, Yamaguchi 755-8505, Japan.
FAU - Kawano, Syunichi
AU  - Kawano S
AD  - Department of Orthopedic Surgery, Yamaguchi University Graduate School of 
      Medicine, Ube, Yamaguchi 755-8505, Japan.
FAU - Taguchi, Toshihiko
AU  - Taguchi T
AD  - Department of Orthopedic Surgery, Yamaguchi University Graduate School of 
      Medicine, Ube, Yamaguchi 755-8505, Japan.
LA  - eng
PT  - Journal Article
DEP - 20140218
PL  - Greece
TA  - Exp Ther Med
JT  - Experimental and therapeutic medicine
JID - 101531947
PMC - PMC3991514
OTO - NOTNLM
OT  - cervical myelopathy
OT  - finite element method
OT  - ossification of the posterior longitudinal ligament
EDAT- 2014/06/19 06:00
MHDA- 2014/06/19 06:01
PMCR- 2014/02/18
CRDT- 2014/06/19 06:00
PHST- 2013/09/03 00:00 [received]
PHST- 2014/01/21 00:00 [accepted]
PHST- 2014/06/19 06:00 [entrez]
PHST- 2014/06/19 06:00 [pubmed]
PHST- 2014/06/19 06:01 [medline]
PHST- 2014/02/18 00:00 [pmc-release]
AID - etm-07-05-1095 [pii]
AID - 10.3892/etm.2014.1557 [doi]
PST - ppublish
SO  - Exp Ther Med. 2014 May;7(5):1095-1099. doi: 10.3892/etm.2014.1557. Epub 2014 Feb 
      18.