Correlation analysis between degenerative spondylolisthesis and T2WI hyperintensity on MRI of interspinous ligament / 中国骨伤

OBJECTIVE@#To explore the relationship between lumbar degenerative spondylolisthesis and T2WI high signal in the interspinous ligament in MRI in order to improve the understanding of the signal changes of the interspinous ligament.@*METHODS@#The clinical data of 43 patients with clinically diagnosed lumbar degenerative spondylolisthesis were collected from March 2018 to March 2020, there were 19 males and 24 females, aged 50 to 92 years with an average of 69 years old. Using picture archiving and communication systems (PACS) to access images and record the distribution and incidence of T2WI high signal in the interspinous ligament between the slipped and non-slipped segments. Using Spearman correlation analysis to explore the relationshipbetween the T2WI high signal of the interspinous ligament and the degree of lumbar spondylolisthesis.@*RESULTS@#Except for 8 ligaments that were not included in the statistical results due to poor image quality, 43 patients with a total of 207 lumbar vertebrae and interspinous ligaments were included in the study. According to the Meyerding classification method, 43 patients had a total of 48 segments with spondylolisthesis, 41 segments in grade Ⅰ and 7 segments in grade Ⅱ. There were 30 cases of MRI T2WI high signal in the interspinous ligament corresponding to spondylolisthesis segment, including 3 cases on L@*CONCLUSION@#In patients with degenerative lumbar spondylolisthesis, the MRI T2WI hyperintensity is more common in the interspinous ligament. The occurrence of T2WI high signal is positively correlated with the degree of spondylolisthesis, which should be payed enough attention in imaging diagnosis.

Posterior L5-S1 transdiscal screws for high grade spondylolisthesis - a systematic review

SUMMARY OBJECTIVE: The surgical management of high-grade lumbar spondylolisthesis (HGLS) is complex and aims to achieve both a solid fusion that is able to support the high shear forces of the lumbosacral junction, as well as neural decompression. We performed a systematic literature review of the safety and efficacy of posterior transdiscal (PTD) screw fixation from L5S1 for HGLS and its variations. METHODS: A systematic literature review following the PRISMA guidelines was performed in the PubMed database of the studies describing the use of PTD screw fixation for HGLS. Clinical and radiological data were extracted and discussed. Study quality was assessed with the Oxford Centre for Evidence-Based Medicine Levels of Evidence. RESULTS: Seven studies were included and reviewed; all of them were level IV of evidence. Two of them had large case series comparing different surgical techniques: one concluded that PTD was associated with better clinical outcomes when compared with standard screw fixation techniques and the other suggesting that the clinical and radiological outcomes of PTD were similar to those when an interbody fusion (TLIF) technique was performed, but PTD was technically less challenging. The remaining five studies included small case series and case reports. All of them reported the successful useful of PTD with or without technical variations. CONCLUSIONS: Our review concludes, with limited level of evidence that PTD fixation is a safe and efficient technique for treating HGLS patients. It is technically less demanding than a circumferential fusion, even though proper screw insertion is more demanding than conventional pedicle screw fixation.

RESUMO OBJETIVOS: O tratamento cirúrgico das listeses de alto grau da coluna lombar (LAGCL) é complexo, objetivando alcançar uma fusão sólida capaz de suportar o estresse biomecânico da junção lombo-sacra, bem como descompressão do tecido neural. Realizamos revisão sistemática da literatura para avaliar a segurança e a eficácia da fixação transdiscal (FTD) L5S1 em LAGCL e suas variações. MÉTODOS: Realizamos revisão sistemática conforme metodologia Prisma na base de dados PubMed dos estudos que utilizaram FTD no tratamento das LAGCL e suas variações. Dados clínicos e radiológicos foram extraídos dos trabalhos e discutidos. A qualidade dos estudos foi avaliada segundo o Oxford Centre for Evidence-Based Medicine Levels of Evidence. RESULTADOS: Sete estudos foram incluídos e analisados, todos com nível IV de evidência. Dois estudos tinham séries de casos maiores, comparando diferentes técnicas cirúrgicas: um concluiu que a FTD foi associada a melhor prognóstico clínico quando comparada à fixação pedicular tradicional, e o outro sugeriu que os resultados clínicos e radiológicos com a FTD foram semelhantes à fusão intersomática, porém com menor demanda técnica na FTD. Os demais cinco estudos eram pequenas séries ou relatos de casos. Todos reportaram o uso da FTD com sucesso, com e sem variações da técnica. CONCLUSÃO: Concluímos que, embora com evidências limitadas, a FTD é segura e efetiva no tratamento das LAGCL. É tecnicamente mais simples do que a fusão circunferencial (intersomática), porém com maior complexidade que a fixação pedicular convencional.

Traumatic lumbar espondylolisthesis: a case report / Espondilolistesis lumbar traumática: un informe de caso / Espondilolistese lombar traumática: um relato de caso

We present a case of traumatic espondylolisthesis L5 S1 A0 53 B3.3 ASIA B in a young patient after a high energy car accident. This entity is a rare injury that requires immediate attention. Treatment should be prompt in order to provide the best prognosis since this is an unstable and severe lesion that presents with neurological deficit in half of the patients. Computed tomography and magnetic resonance imaging have shown to be extremely valuable for the diagnosis and are mandatory for this kind of injuries. In this case it is noteworthy that the intervertebral disk was intact. It is reported that if surgery is performed 24 to 48 hours after the accident, the improvement of neurological deficit is very feasible. In this case posterolateral fusion with autologous bone graft and multiplanar transpedicular posterior instrumentation and decompression were performed 52 hours after the accident. The patient presents one year after surgery with improvement in movement and sphincter control and with radiographic evidence of a complete fusion.

Apresentamos um caso de espondilolistese traumática L5 S1 A0 53 B3.3 ASIA B em paciente jovem, após acidente de carro de alta energia. Essa entidade é uma lesão rara, que exige atenção imediata. O tratamento deve ser rápido, a fim de proporcionar o melhor prognóstico, uma vez que é uma lesão instável e grave que se apresenta com déficit neurológico em metade dos pacientes. A tomografia computadorizada e a ressonância magnética foram extremamente valiosas para o diagnóstico e são obrigatórias para esse tipo de lesão. Neste caso, deve-se salientar que o disco intervertebral estava intacto. Relata-se que se a cirurgia for realizada de 24 a 48 horas após o acidente, a melhora do déficit neurológico é bastante viável. Neste caso a fusão posterolateral com enxerto ósseo autólogo e instrumentação multiplanar posterior transpedicular, assim como a descompressão foram realizadas 52 horas após o acidente. O paciente apresenta-se um ano após a cirurgia com melhora motora e controle esfincteriano, além de evidências radiográficas de fusão completa.

Presentamos un caso de espondilolistesis traumática L5 S1 AO 53 B3.3 ASIA B en un paciente joven tras un accidente de alta energía en automóvil. Es una lesión rara que requiere atención médica inmediata. El tratamiento debe ser lo más rápido posible para mejorar el pronóstico ya es una lesión inestable y severa que se presenta con déficit neurológico en la mitad de los pacientes. La tomografía compuarizada y la resonancia magnética son obligatorias en estos casos pues han demostrado ser invaluables para el diagnóstico y manejo. En este caso hay que destacar que el disco intervertebral estaba intacto. Se ha informado de que si la cirugía se lleva a cabo 24 a 48 horas después del accidente, la mejora del déficit neurológico es muy probable. En este caso se realizaron la fusión posterolateral con injerto óseo autólogo e instrumentación multiplanar transpedicular posterior, así como una descompresión del segmento, 52 horas después del accidente. El paciente se presenta un año después de la cirugía con mejoría motora y de control de los esfínteres además de evidencia radiográfica que demuestra fusión completa.

Fractura del ahorcado: antecedentes históricos / Hangmen's fracture: historical background

La fractura del ahorcado es la lesión traumática del arco neural del axis. El entendimiento de esta afección comenzó a desarrollarse a principios de este siglo, aunque el proceder del ahorcamiento judicial se utilizaba desde cientos de años con anterioridad. Este trabajo se propone revisar los antecedentes históricos hasta el momento actual en el conocimiento de dicha afección, su presentación natural, el diagnóstico imagenológico y las alternativas del tratamiento(AU)

Hangmans fracture is the traumatic injury of the neural arch of the axis. This affection started to be understood at the beginning of the last century, though the procedure of the judicial hanging had been used hundreds of years before. The objective of this paper is to review the historical antecedents of the knowledge of this affection, its natural presentation, the imaging diagnosis and the treatment alternatives up to now(AU)

Comparison between Posterolateral Fusion with Pedicle Screw Fixation and Anterior Interbody Fusion with Pedicle Screw Fixation in Adult Spondylolytic Spondylolisthesis

There have been many reports regarding various operative methods for spondylolytic spondylolisthesis. However, there have been no reports regarding the comparison between posterolateral fusion (PLF) with pedicle screw fixation (PSF) and anterior lumbar interbody fusion (ALIF) with PSF. The purpose of the current study was to compare the clinical outcomes of PLF with PSF and ALIF with PSF, and to help in the selection of treatment options. Fifty-six patients with spondylolytic spondylolisthesis who underwent PLF with PSF (group 1, 35 patients) or who underwent ALIF with PSF (group 2, 21 patients) were studied. Minimum follow-up was 2 years. Demographic variables and disease state were similar for the two groups. We studied operating time, amount of blood loss, duration of hospital stay, clinical outcomes, complications, time at which fusion was complete, fusion rate, and radiological measurements. There were no significant differences between the two groups in terms of the amount of blood loss, duration of hospital stay, back pain, radiating pain, fusion rate, or complication rate. However, in group 2, the operation time and the time at which fusion became complete was longer, and in group 1 there was significant radiological reduction loss. In conclusion, PLF with PSF was just as effective as ALIF with PSF in terms of clinical outcomes, but ALIF with PSF was superior to PLF with PSF in terms of the prevention of reduction loss. Anterior support would be helpful for preventing reduction loss in cases of spondylolytic spondylolisthesis of the lumbar spine.