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1.
China Journal of Orthopaedics and Traumatology ; (12): 428-431, 2023.
Article in Chinese | WPRIM | ID: wpr-981709

ABSTRACT

OBJECTIVE@#To explore the effect of facet joint degeneration in adjacent segments on the incidence of adjacent segment disease (ASD) after lumbar fusion and fixation.@*METHODS@#A retrospective analysis was performed on 138 patients who underwent L5S1 posterior lumbar interbody fusion (PLIF) from June 2016 to June 2019. Patients were divided into a degeneration group (68 cases) and a non-degenerative group (70 cases) based on the presence or absence of L4,5 facet joint degeneration before surgery (graded using the Weishaupt standard). Age, gender, body mass index (BMI), follow-up time, and preoperative L4,5 intervertebral disc degeneration (graded using the Pfirrmann standard) were collected for both groups. Clinical outcomes were evaluated using the visual analogue scale (VAS) and Oswestry disability index (ODI) at 1 and 3 months after surgery. The incidence and time of ASD after surgery were analyzed.@*RESULTS@#There were no significant differences between the two groups in age, gender, BMI, follow-up time, or preoperative L4,5 intervertebral disc degeneration. Both groups showed significant improvement in VAS and ODI at 1 and 3 months after surgery (P<0.001), with no significant difference between the groups(P>0.05). However, there was a statistically significant difference in the incidence and timing of ASD between the groups (P<0.05). The degeneration group had 2 cases of ASD in gradeⅠdegeneration, 4 cases of ASD in gradeⅡdegeneration, and 7 cases of ASD in grade Ⅲ degeneration. There was a statistically significant difference between the number of patients with grade Ⅲ degeneration and those with gradesⅠandⅡASD (P<0.0167, Bonferroni correction).@*CONCLUSION@#Preoperative degeneration of adjacent articular processes will increase the risk of ASD after lumbar fusion fixation, whereas gradeⅢ degeneration will further increase the risk.


Subject(s)
Humans , Intervertebral Disc Degeneration/surgery , Zygapophyseal Joint/surgery , Retrospective Studies , Spinal Fusion/adverse effects , Lumbar Vertebrae/surgery , Spondylosis , Treatment Outcome
2.
Rev. bras. ortop ; 55(5): 642-648, Sept.-Oct. 2020. tab, graf
Article in English | LILACS | ID: biblio-1144215

ABSTRACT

Abstract Objective To verify whether, regardless of the screw placement technique, there is a safe distance or angle in relation to the facets that can prevent violation of the facet joint when the screws are placed. Methods Retrospective, single, comparative, non-randomized center. We evaluated by axial computed tomography: the angle of the screw/rod in relation to the midline, the angle of the center of the facets in relation to the midline, the distance between the head of the screw/rod to the midline, and the distance from the center of the facets to the midline; the violation of the facet joint will be evaluated in a gradation of 0 to 2. Also will be measured the difference between the angle os the facets and the angle of the screws (Δ Angle) and, the difference between the facet distance and the screw distance (Δ Distance). Results A total of 212 patients and 397 facets were analyzed (196 on the left and 201 on the right). Of these, 303 were not violated (grade 0), corresponding to 76,32%, and 94 suffered some type of violation (grade 1 and 2), corresponding to 23,68%. The mean of Δ angle was 9.87° +/− 4.66° (grade 0), and of 3.77° +/− 4.93° in facets (grade 1 and 2) (p< 0.001), and the Δ mean distance in cases in which there was no violation was 0.94 arbitrary units (a.u.) +/− 0.39 a.u., while the Δ distance in G1 and G2 cases was 0.56 a.u. +/− 0.25 a.u. (p< 0.001). Conclusion The measurements of angle and distance between facet and screw can help in the placement of screws. These parameters can be used as safety measures with the most frequent use of surgical navigation techniques.


Resumo Objetivo Verificar se, independente da técnica de colocação do parafuso, há uma distância ou angulação segura em relação as facetas para que os parafusos sejam colocados de modo a evitar a violação da articulação facetária. Métodos Estudo retrospectivo, comparativo, não randomizado, em centro único. Foram avaliados em tomografia computadorizada axial: o ângulo do parafuso/barra em relação a linha média, o ângulo do centro das facetas em relação a linha média, a distância entre a cabeça do parafuso/barra até a linha média, e a distância do centro das facetas até a linha média; a violação da articulação facetária será avaliada em uma gradação de 0 a 2. Serão também calculados a diferença entre o ângulo do parafuso e ângulo da faceta (Δ Ångulo) e também a diferença entre a distância da faceta e a distância do parafuso (Δ Distância). Resultados Um total de 212 pacientes e 397 facetas foram analisados (196 do lado esquerdo e 201 do lado direito). Destes, 303 foram não violados (grau 0), correspondendo a 76,32%, e 94 sofreram algum tipo de violação (grau 1 e 2), correspondendo a 23,68%. A média do Δ ângulo foi de 9,87° +/− 4,66° (grau 0) e de 3,77° +/− 4,93° em facetas (grau 1 e 2) (p< 0.001), e o Δ distância médio nos casos em que não houve violação foi de 0,94 unidades aleatórias (u.a.) +/− 0,39 u.a., enquanto o Δ distância de casos G1 e G2 foi de 0,56 u.a. +/− 0,25 u.a. (p< 0.001). Conclusão As medidas de ângulo e distância entre faceta e parafuso, podem auxiliar na colocação de parafusos. Esses parâmetros podem ser utilizados como medidas de segurança com o uso mais frequentes das técnicas de navegação cirúrgica.


Subject(s)
Humans , Spinal Fusion/methods , Zygapophyseal Joint/surgery , Pedicle Screws , Tomography, X-Ray Computed , Retrospective Studies , ROC Curve , Zygapophyseal Joint/diagnostic imaging , Pedicle Screws/adverse effects
3.
Arq. neuropsiquiatr ; 74(9): 745-749, Sept. 2016.
Article in English | LILACS | ID: lil-796053

ABSTRACT

ABSTRACT Surgical treatment is well accepted for patients with traumatic cervical facet joint dislocations (CFD), but there is uncertainty over which approach is better: anterior, posterior or combined. We performed a systematic literature review to evaluate the indications for anterior and posterior approaches in the management of CFD. Anterior approaches can restore cervical lordosis, and cause less postoperative pain and less wound problems. Posterior approaches are useful for direct reduction of locked facet joints and provide stronger fixation from a biomechanical point of view. Combined approaches can be used in more complex cases. Although both anterior and posterior approaches can be used interchangeably, there are some patients who may benefit from one of them over the other, as discussed in this review. Surgeons who treat cervical spine trauma should be able to perform both procedures as well as combined approaches to adequately manage CFD and improve patients’ final outcomes.


RESUMO O tratamento dos deslocamentos facetários cervicais traumáticos (DFC) é preferencialmente cirúrgico, conforme a literatura pertinente, mas há dúvidas quanto a melhor forma de abordagem da coluna: anterior, posterior ou combinada. Realizamos revisão sistemática para avaliar as indicações da abordagem anterior e da posterior nos DFC. A abordagem anterior permite restaurar a lordose cervical, com menor dor no pós-operatório e menos problemas relacionados a ferida cirúrgica. A abordagem posterior permite redução direta dos deslocamentos, bem como pode resultar em uma fixação biomecanicamente mais robusta. Acessos combinados são usados em casos complexos. Embora ambas possam ser usadas, há alguns pacientes que possivelmente se beneficiem preferencialmente de uma abordagem ao invés da outra, como discutido no presente manuscrito. Cirurgiões de coluna devem ser habilitados a realizar ambos os procedimentos para melhor os resultados do tratamento dos DFC.


Subject(s)
Humans , Cervical Vertebrae/injuries , Zygapophyseal Joint/surgery , Zygapophyseal Joint/injuries , Fracture Dislocation/surgery , Fracture Fixation/methods , Reproducibility of Results , Risk Factors , Spinal Fractures/surgery , Treatment Outcome , Decompression, Surgical/methods
4.
Arq. bras. neurocir ; 35(2): 111-117, jun.2016.
Article in English | LILACS | ID: biblio-837356

ABSTRACT

Objective The aim of this study was to carry out a systematic literature review on the facet syndrome and a meta-analysis of the outcomes of radiofrequency denervation in patients presenting with the syndrome. Methods A systematic literature review was performed based on 52 articles published from 1999 to 2013, available at Bireme, Scielo, PubMed, and MEDLINE databases. The meta-analysis comprises eight case-control studies, found during the literature review, totaling 440 patients. The heterogeneity of the collected data was assessed using the chi-square test (χ2). To estimate the effect of the proposed correlation, we combined the values of each study with the Mantel-Haensze test, which has fixed effects, using the BioEstat 5.0 software. Results The selected studies were statistically relevant when grouped, determining an effect in favor of the use of facet denervation as a technique capable of relieving chronic low back pain in pre-determined periods of follow-up (OR » 1.251; 95% CI: 1.028­1.524). Conclusion The results of the systematic literature review and meta-analysis herein presented may be used for the creation of diagnosis and management protocols for facet syndrome, and can also attract the interest of other researchers to conduct further studies on the theme.


Objetivo Este estudo teve como objetivo elaborar uma revisão sistematizada sobre síndrome facetária e umametanálise sobre os desfechos do tratamento neurocirúrgico com denervação por radiofrequência em pacientes acometidos por esta síndrome. Métodos A revisão sistematizada foi elaborada com base em 52 artigos publicados de 2000 a 2013, disponíveis nas bases de dados eletrônicos Bireme, Scielo, PubMed e MEDLINE. A metanálise foi composta por oito casos-controle, selecionados durante a revisão, totalizando 440 pacientes. Os dados coletados foram avaliados quanto à sua heterogeneidade pelo teste qui-quadrado (χ2). Para estimar o efeito da correlação proposta, os valores de cada estudo foram combinados com o teste de Mantel- Haensze, que tem efeitos fixos, utilizando o software BioEstat 5.0. Resultados Os estudos selecionados são estatisticamente relevantes quando agrupados, determinando um efeito a favor do uso da denervação facetária como técnica capaz de diminuir a lombalgia crônica em seguimentos pré-determinados, mostrando OR de 1,251 e IC95% entre 1,028 e 1,524. Conclusão Os resultados da revisão sistemática de literatura e da metanálise aqui apresentados podem servir de base para a criação de protocolos de diagnóstico e conduta da síndrome facetária, assim como despertar o interesse de outros pesquisadores para a condução de novos estudos sobre o tema.


Subject(s)
Low Back Pain , Zygapophyseal Joint , Zygapophyseal Joint/surgery , Denervation
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