Communication board in locked-in syndrome: a practical interaction method with the patient / Prancha de comunicação na síndrome do encarceramento: um método prático de interação com o paciente

ABSTRACT Locked-in syndrome is a neurological condition characterized by tetraplegia, mutism, preservation of vertical eye movement, superior eyelid movement, and intact consciousness, making it impossible for the patient to communicate properly. We herein describe a case to analyze the practice of developing a method of communication for a patient with locked-in syndrome. Two communication boards were created, adapted to the Portuguese language, as well as a shortcut to inquire about the physical and emotional patient's well-being. We had difficulty with the initial communication board, due to the patient's low education level, so we adapted a new one to the patient's social context, including a shortcut to inquire about physical and emotional well-being. The communication board had a positive impact on treatment development and the patient's life.

RESUMO A síndrome do encarceramento é uma condição neurológica caracterizada por tetraplegia, mutismo, preservação do movimento vertical dos olhos, movimento palpebral superior e consciência intacta, impossibilitando a comunicação adequada do paciente. Descrevemos um caso para analisar a prática de criação de um método de comunicação em um paciente com síndrome do encarceramento. Foram criadas duas pranchas de comunicação, adaptadas à língua portuguesa, e um atalho para indagar sobre o bem-estar físico e emocional do paciente. Tivemos dificuldade com a prancha de comunicação inicial em razão da baixa escolaridade do paciente, então criamos uma nova prancha de comunicação adaptada ao seu contexto social. A nova prancha tinha um atalho para indagar sobre o bem-estar físico e emocional do paciente. A prancha de comunicação teve impacto positivo no desenvolvimento do tratamento e na vida do paciente.

A comparative analysis of distal locked and unlocked long proximal femoral nail antirotation (PFNA-II) in the fixation of stable intertrochanteric fractures / 中华创伤杂志(英文版)

PURPOSE@#Long proximal femoral nail anti-rotation (PFNA-II) is a preferred implant in recent years for fixation of pertrochanteric fractures, especially in osteoporotic patients. The purpose of this study is to prospectively investigate the effect of distal locking in long PFNA-II fixation of stable intertrochanteric fractures.@*METHODS@#A total of 58 patients with isolated stable intertrochanteric fractures and treated in our hospital during the study period of 2017-2019 by distal locked or unlocked long PFNA-II fixation were included in this study. Patients who had multiple injuries or open fractures were excluded. There were 40 female and 18 male patients, with 33 affecting the left side and 25 the right side. Of them, 31 belonged to the distal locked group (group A) and 27 to the unlocked group (group B). Surgical procedures and implants used in both groups were similar except for the distal locking of the nails. General data (age, gender, fracture side, etc.) showed no significant difference between two groups (all p > 0.05). The intraoperative parameters like operative time, radiation exposure and follow-up parameters like functional and radiological outcomes were recorded and compared. Statistical tests like the independent samples t-test Fischer's exact and Chi-square test were used to analyze association.@*RESULTS@#The distribution of the fractures according to AO/OTA classification and 31A1.2 type of intertrochanteric fractures were most common in our study. All the included fractures united and the average functional outcome in both groups were good and comparable at the end of one year. The operative time (mL, 107.1 ± 12.6 vs. 77.0 ± 12.0, p < 0.001) and radiation exposure (s, 78.6 ± 11.0 vs. 40.3 ± 9.3, p < 0.001) were significantly less among the patients in group B. Fracture consolidation, three months after the operative procedures, was seen in a significantly greater proportion of patients in group B (92.6% vs. 67.7%, p = 0.025). Hardware irritation because of distal locking bolt was exclusively seen in group A, however this was not statistically significant (p = 0.241).@*CONCLUSION@#We conclude that, in fixation of stable intertrochanteric fractures by long PFNA-II nail, distal locking not only increases the operative time and radiation exposure but also delays the fracture consolidation and increases the chances of hardware irritation, and hence is not required.

Locked-in syndrome after traumatic atlantoaxial subluxation: a case report / Síndrome do encarceramento decorrente de subluxação atlantoaxial traumática: relato de caso / Síndrome de enclaustramiento por subluxación atlantoaxoidea traumática: informe de caso

ABSTRACT Traumatic atlanto-axial subluxation is a rare and underdiagnosed condition due to its high rate - reported to be between 60 and 80% - of early mortality. Its diagnosis takes into account the trauma mechanism, precise analyses of the imaging tests and the clinical presentation of the patient. This article describes a rare presentation of atlanto-axial subluxation associated with craniocervical dislocation as a case of locked-in syndrome. Level of evidence V; Retrospective observational study - Case report.

RESUMO Subluxação atlantoaxial traumática é uma condição de diagnóstico raro e subestimado, devido a sua alta taxa - descrita entre 60% e 80% - de mortalidade precoce. Seu diagnóstico leva em conta o mecanismo do trauma, as análises precisas dos exames de imagem e a apresentação clínica do paciente. Este artigo relata um quadro raro de subluxação atlantoaxial associada à luxação craniocervical como um caso de síndrome do encarceramento. Nível de evidência V; Estudo observacional retrospectivo - Relato de caso.

RESUMEN La subluxación atlantoaxoidea traumática es una afección rara y subdiagnosticada debido a su alta tasa - descrita entre el 60 y el 80%-de mortalidad temprana. Su diagnóstico tiene en cuenta el mecanismo del traumatismo, los análisis de imagen precisos y la presentación clínica del paciente. Este artículo informa de una rara condición de subluxación atloaxoidea asociada a una dislocación craniocervical como un caso de síndrome de enclaustramiento. Nivel de evidencia V; Estudio observacional retrospectivo - Informe de caso.

Acute Post-Traumatic Locked Knee - An Unmasking of a Rare Knee Disorder

@#Locked knees are commonly caused by meniscal tears, floating osteochondral bodies, ruptured anterior cruciate ligament (ACL) stump, or other mechanical origins in the knee. Some locked knees occur spontaneously, while in most cases, by a preceding knee trauma. Locked knees are rarely caused by a pathological growth in the knee. More unusually is the occurrence of locked knee caused by a pre-existing pathological entity after a traumatic event. We report a rare case of locking in the knee by a pre-existing knee condition presented only after trauma to the knee. This case emphasizes that locking in the knee can be caused by a pathology that may be asymptomatic until it is revealed by a traumatic event.

Brain functional connectivity in lower limb amputees / 中国康复理论与实践

@#Objective To investigate the changes of functional brain connectivity over multiple frequency bands in resting-state electroencephalography (EEG) for lower limb amputation patients. Methods Resting-state EEG was collected from 18 lower limb amputees and 22 healthy controls from November, 2020 to June, 2021. Functional connectivity matrix was constructed with phase-locked values (PLV), and compared between groups. Results The functional connectivity was weaker in the amputees than in the controls on α band (t = 3.433, P = 0.001) and β band (t = 3.806, P = 0.001), and there was no significant difference on δ band (t = 1.429, P = 0.161) and θ band (t = 1.211, P = 0.233). Conclusion EEG functional connectivity weakens in lower limb amputees in on the α and β band, which results in neuroplasticity of multiple brain regions, not only for limb-respond cortex, but also for frontal, temporal and occipital cortices.

Probable first report of a motor deafferentation syndrome in the Paraguayan War / Provável primeiro relato de uma síndrome de desaferentação motora na Guerra do Paraguai

ABSTRACT The Paraguayan War ended 150 years ago. Back then, there were outbreaks of combatants' limb weakness and tingling related to "palustrian cachexia", not clearly funded at the time on nutritional deficiency, the use of native flora to feed troops, and alcoholism. We report a case of a soldier with ascending paralysis, mental confusion and finally tetraplegia with preserved oculomotricity. This would probably be a case of locked-in syndrome (LIS) due to Gayet-Wernicke's encephalopathy consequent to thiamine deficiency. The role of thiamine in the peripheral or central nervous system expression was shown decades later to be related to poor diet, or use of foods containing thiaminase or thiamine antagonists, worsened by the fact that the bodily stores of thiamine are restricted, and deficits may grow fast.

RESUMO A Guerra do Paraguai terminou há 150 anos. Houve surtos de fraqueza dos membros dos combatentes e parestesias relacionadas à "caquexia palustre", não claramente fundamentados na época sobre deficiência nutricional, o uso da flora nativa para alimentar as tropas e o alcoolismo. Referimo-nos a um caso de um militar com paralisia ascendente, confusão mental e finalmente tetraplegia com oculomotricidade preservada. Esse relato seria provavelmente devido a um caso de "síndrome do encarceramento" secundário à encefalopatia de Gayet-Wernicke consequente à deficiência de tiamina. O papel da tiamina na expressão periférica ou do SNC foi previsto décadas mais tarde em relação a uma dieta pobre, ou ao uso de alimentos contendo tiamina ou antagonistas da tiamina, agravado pelo fato de que as reservas corporais de tiamina são restritas, e os déficits podem se manifestar rapidamente.

Jahi McMath, a New Disorder of Consciousness / Jahi McMath, un nuevo trastorno de la conciencia / Jahi McMath, um novo transtorno da consciencia

Abstract: In this paper, I review the case of Jahi McMath, who was diagnosed with brain death (BD). Nonetheless, ancillary tests performed nine months after the initial brain insult showed conservation of intracranial structures, EEG activity, and autonomic reactivity to the "Mother Talks" stimulus. She was clinically in an unarousable and unresponsive state, without evidence of self-awareness or awareness of the environment. However, the total absence of brainstem reflexes and partial responsiveness rejected the possibility of a coma. Jahi did not have UWS because she was not in a wakefulness state and showed partial responsiveness. She could not be classified as a LIS patient either because LIS patients are wakeful and aware, and although quadriplegic, they fully or partially preserve brainstem reflexes, vertical eye movements or blinking, and respire on their own. She was not in an MCS because she did not preserve arousal and preserved awareness only partially. The CRS-R resulted in a very low score, incompatible with MCS patients. MCS patients fully or partially preserve brainstem reflexes and usually breathe on their own. MCS has always been described as a transitional state between a coma and UWS but never reported in a patient with all clinical BD findings. This case does not contradict the concept of BD but brings again the need to use ancillary tests in BD up for discussion. I concluded that Jahi represented a new disorder of consciousness, non-previously described, which I have termed "reponsive unawakefulness syndrome" (RUS).

Resumen: En este artículo, revisó el caso de Jahi McMath, quién fue diagnosticada con muerte encefálica (ME). No obstante, exámenes complementarios realizados nueve meses después de la lesión cerebral inicial mostraron conservación de las estructuras intracraneales, actividad en electroencefalografía EEG, y reactividad autonómica a estímulos llamados "Conversación de Madre". Ella estaba clínicamente en un estado sin respuesta a los estímulos, sin evidencia de autoconciencia o conciencia del ambiente. Sin embargo, la ausencia total de reflejos del tronco encefálico y la capacidad de respuesta parcial rechazaron la posibilidad de un coma. Jahi no tenía síndrome de vigilia sin respuesta SVSR porque no estaba en un estado de vigilia y mostró una capacidad de respuesta parcial. Tampoco pudo ser clasificada como paciente LIS porque los pacientes LIS están despiertos y conscientes, y aunque tetrapléjicos, conservan total o parcialmente los reflejos del tronco encefálico, los movimientos oculares verticales u el parpadeo, y respiran por sí mismos. Ella no estaba en un EMC porque no preservaba la excitación y preservaba la conciencia solo parcialmente. La CRS-R dio una puntuación muy baja, incompatible con pacientes de EMC. Los pacientes de EMC preservan total o parcialmente los reflejos del tronco encefálico y, por lo general, respirar por sí solos. El EMC siempre se ha descrito como un estado de transición entre un coma y SVSR pero nunca se ha reportado en paciente con todos los hallazgos clínicos de ME. Este caso no contradice el concepto de ME pero vuelve a plantear la discusión acerca de la necesidad de utilizar exámenes complementarios en ME. Llegué a la conclusión de que Jahi representaba un nuevo trastorno de la conciencia, no descrito anteriormente, que he denominado "síndrome de no despertar con respuesta" (SNDR).

Resumo: Neste artigo, foi revisado o caso Jahi McMath, que foi diagnosticada com morte encefálica (ME). Contudo, exames complementares realizados nove meses depois da lesão cerebral inicial mostraram conservação das estruturas intracranianas, atividade em eletroencefalografia (EEG) e reatividade autonômica a estímulos chamados "Conversación de Madre". Ela estava clinicamente em um estado sem resposta aos estímulos, sem evidência de autoconsciência ou consciência do ambiente. Contudo, a ausência total de reflexos do tronco encefálico e a capacidade de resposta parcial rejeitaram a possibilidade de um coma. Jahi não tinha síndrome de vigia sem resposta (SVSR), porque não estava em um estado de vigia e mostrou uma capacidade de resposta parcial. Também nao pode ser classificada como paciente LIS, porque estes estão acordados e conscientes, e ainda que tetraplégicos, conservam total ou parcialmente os reflexos do tronco encefálicos, os movimentos oculares verticais ou cintilação, e respiram por si próprios. Ela não estava em um EMC porque não preservava a excitação e preservava a consciencia somente parcialmente. A CRS-R deu uma pontuação muito baixa, incompatível com pacientes de EMC. Os pacientes de EMC preservam total ou parcialmente os reflexos do tronco encefálico e, em geral, respirar por si só. O EMC sempre foi descrito como um estado de transição entre coma e SVSR, mas nunca foi relatado em paciente com todos os achados clínicos de ME. Esse caso não contradiz o conceito de ME, mas volta a colocar a discussão sobre a necessidade de utilizar exames complementares em ME. Cheguei a conclusão de que Jahi representava um novo transtorno da consciencia, nao descrito anteriormente, que denominei "síndrome de resposta sem vigília" (SRSV)

Successful results obtained in the treatment of adolescent forearm fractures with locked intramedullary nailing / 中华创伤杂志(英文版)

PURPOSE@#In the surgical treatment of paediatric forearm fractures, plate-screw and titanium elastic nails are used. During the transformation of ligamento-osseous structures from adolescence form into adult form, more stable fixation is required. The aim of this study was to evaluate the results of locked intramedullary nail fixation in adolescent forearm fractures.@*METHODS@#A retrospective examination was made on 36 adolescent patients who underwent surgery with locked intramedullary nail fixation due to a forearm fracture. The included patients were in the adolescent age group (12-17 years), did not meet conservative follow-up criteria and had unstable fractures (>10° angulation and 18 years or 15 years had prolonged time to union ([11.1 ± 1.8] weeks). There were no non-unions, re-fractures or infections. No complications were observed during implant removal. None of the patients had sensorial radial nerve injury or tendon damage.@*CONCLUSION@#The locked intramedullary nailing technique, which is minimally invasive and provides biological fixation, was found to be successful and safe in the treatment of adolescent forearm fractures.

Speech language characteristics and intervention approaches in lockedin syndrome post snake envenomation

The present case study illustrates hypoxic-ischemic encephalopathy as a result of neuroparalytic snake envenomation in an 11 year old male patient. Detailed speech assessment was done which revealed diverged oral structures and language loss. The study aims to document speech and language characteristics as well as rehabilitation in terms of speech therapy. The study enlightens the role of speech language pathologist in assessment and intervention of locked in syndrome. Study shows the swapped roles of traditional therapy approaches and the importance of augmentative and alternative communication as compassion and a beneficial technique in an intricate incident like hypoxic-ischemic encephalopathy as a result of neuroparalytic snake envenomation.

Toma de decisiones en ética clínica y su aplicación a un caso de síndromede enclaustramiento / Decision making in clinical ethics and its application to a locked-in case

La ética clínica, como parte de la bioética, tiene como función ayudar al personal sanitario, al paciente o a la familia en la toma de de-cisiones cuando estas abordan cuestiones éticas de difícil solución. En algunos problemas, esta toma de decisiones se enfrenta no solo a posturas clínicas diversas, sino que también a apremios por parte de familiares -o del mismo equipo médico- que claman por una solución ante casos que entran en el área gris del debate ético. Nuestra respuesta frente a estos problemas ingentes es la aplicación de un método de análisis clínico, el cual, mediante una metodología propia y replicable, pueda orientar la discusión sobre principios comunes y, a la vez, poder evaluar las decisiones clínicas emanadas.Más allá de las respuestas clínicas que se puedan dar frente a casos diversos, no debemos olvidar los fundamentos que la antropología cristiana nos presenta a la hora de ver al ser humano como totalidad unificada. Este criterio debe ser la base que guíe una reflexión que no solo busque criterios de calidad, sino que además valore la inviolabilidad de la vida y con ella la dignidad de cada persona, en especial, en aquellas condiciones de fragilidad como el síndrome de enclaustramiento.

Clinical ethics (as part of bioethics) has the function of helping health personnel, the patient, or the family in decision-making when they address ethical issues that are difficult to solve. In some problems, this decision-making is not only confronted with diverse clinical positions, but also by pressure from family members or the same medical team that clamour for a solution to cases that fall into the grey area of ethical debate. Our response to these enormous problems is the application of a method of clinical analysis which, through its own replicable methodology, can guide the discussion of common principles and, at the same time, be able to evaluate the clinical decisions that have been made.Beyond the clinical responses that can be given to diverse cases, we must not forget the foundations that Christian anthropology presents us when it comes to seeing man as a unified whole, this criterion must be the basis that guides a reflection that not only look for quality criteria but value the inviolability of life and with it the dignity of each person especially in those conditions of fragility, such as locked-in.

Removal of locked intramedullary nails with the aid of bolts

Background: Removal of an intramedullary nail would require the extraction system of the inserted nail to be available. Sometimes the system is not available, and an alternative system would have to be utilised. Aim of the study was to document the removal of interlocked nails using bolts in the absence of appropriate fitting extraction system.Methods: A prospective study of consecutive patients seen by the authors between September 2016 and September 2018 in private clinics in Port Harcourt where the authors were invited to remove intramedullary nails. Bolts fitted to the proximal tips of the nails were utilized. With the aid of plier applied to the bolts and mallet, the nails were extracted. The patients’ socio-demographic and information relevant to the injury were obtained. Data was analysed using SPSS version 23.Results: Fifteen patients were seen. Ages ranged from 29 to 72 years, consisting of 10 males and five females. The tibia was affected in six and the femur in nine. There were five united tibial fractures and one non-united tibial fracture, six united femoral fractures and three non-united femoral fractures. Indication for removal was mostly patients’ request. Duration of surgery ranged from 1 to 4 hours. All the nails were extracted. Complications included broken nail, heterotopic calcification, bony overgrowth/ ingrowth/ongrowth around the nail and interlocking screws. There was no mortality.Conclusions: In the absence of conventional intramedullary nail extraction system, appropriate size bolts can be applied to the threaded proximal tip of nails and used for nail extraction.

Abordaje fonoaudiológico de la deglución en el Síndrome de Enclaustramiento / Intervention approach for speech -language pathologists to swallowing in Locked-in Syndrome

n el Síndrome de Enclaustramiento las manifestaciones clínicas son preponderantemente de orden motor, situación que requiere la intervención del Fonoaudiólogo, dado el compromiso comunicativo y de la biomecánica deglutoria. La disfagia en este síndrome está dada por la desconexión sensorio-motriz de las estructuras anatómicas de la deglución, alterando la secuencia neuromotora y sensitiva del proceso deglutorio debido a la desconexión pontina. El texto presenta el caso de una paciente femenina de 27 años quien es diagnosticada con Síndrome de Eclaustramiento posterior a accidente cerebrovascular de Arteria Basilar Derecha, acto que compromete sus habilidades motoras de forma generalizada. A partir de su diagnóstico y dadas las características multicéntricas de la deglución, se objetiva comenzar intervención fonoaudiológica oportuna, estableciendo como eje fundamental la secuencialidad de los procesos neurofisiológicos de la deglución; adoptando como estrategia el manejo de consistencias, fortaleciendo sensorial y motrizmente la deglución. Al intervenir las necesidades sensoriomotoras orales en pro de la alimentación, y usando como estrategias terapéuticas la modificación de consistencias, manejo de volumen, postura, aditamento para suministro de alimento y tiempos de ingesta, se minimizan los riesgos en el proceso de alimentación y se puedo llegar a mantener un estado nutricional y de hidratación óptimo para la recuperación física general, permitiendo el aumento de la ingesta en una proporción inicial de 30% vía oral - 70% vía enteral a un 100% incluyendo a la dieta el nivel 4-puré, según la IDDSI y desarrollando paralelamente procesos de interacción familiar, impactando su calidad de vida.

he clinical manifestations of Locked-In Syndrome are predominantly motor in order, a situation that requires the intervention of the speech therapist, given the communicative disorder and biomechanics of swallowing. The dysphagia in this syndrome is produced by the sensibly-motor disconnection of the anatomical structures of swallowing, altering the neuromotor and sensitive sequence of the swallowing process because of the pontine disconnection. The text presents the case of a 27-year-old female who is diagnosed with Locked-In Syndrome after suffering a cerebrovascular accident in the Basilar Right Artery, which compromises her motor skills. From her diagnosis and given the characteristics of swallowing, it is necessary to begin speech therapy intervention, focusing the sequences of the neurophysiological processes of swallowing; using as a strategy the management of consistency, strengthening sensory and motor swallowing. After intervening the oral sensory motor, improving nutrition, and using as therapeutic strategies the modification of consistency, volume, posture, food supply and intake times. The risks in the feeding process are minimized, the nutritional status and optimal hydration can be maintained for the overall physical recovery, allowing the increase of intake with an initial proportion of 30% orally - 70% through enteral to 100%, including the 4-Pureed level, according to the IDDSI and developing parallel processes of family interaction, impacting their quality of life.

The unusual traumatic locked young knee

@#Locked knee is an orthopaedic condition requiring urgent treatment. Although the condition can be diagnosed via history, physical examination and imaging studies, the cause of the mechanical obstruction may only be apparent during arthroscopic examination of the knee joint. It is known that imaging plays a role in evaluating the integrity of intra-articular structures, however in some atypical cases, imaging cannot identify the definitive cause of locked knee. Here we report on two cases of locked knee, due to uncommon conditions which were unobservable via normal imaging studies.

Degenerative Osteophyte Causing Acute Locked Knee in a Young Man: A Case Report

Abstract@#Acute locked knee is usually caused by mechanical blockage. We report an unusual case of a locked knee due to tibial osteophyte in a young man following a sport injury. To the best of our knowledge, there has been no previous report describing the same etiology. This case report emphasizes the need for thorough history taking and careful assessment to aid us in the diagnosis. The findings made by arthroscopy confirmed our diagnosis.

Dilemma in Chronic Extrusion of Medial Meniscus with Unicompartmental Osteoarthritis in Middle Aged: A Case Report

Abstract@#Medial meniscus root tear (MMRT) is uncommon and is often associated with osteoarthritis during presentation. Whether it is a cause or effect, it is still debatable at this point of time. However, when a combination of injuries occurs in a middle age group patient, a careful examination before offering a treatment is advised. We herein report a case of a middle-aged gentleman suffering from both arthritis and MMRT.

Locked Plating in Elderly Patients with Distal Femur Fracture: How to Avoid Complications?

Distal femur fractures in elderly patients with osteoporosis are complicated because poor bone quality makes screw purchase and fixation less secure, presenting many clinical challenges to the orthopedic surgeon. Minimally invasive locked plating using an angularly stable locking compression plate has become an integral tool for achieving secure fixation in osteoporotic distal femur fractures with improved biomechanical performance. On the other hand, complications, such as implant failure and periplate fracture, have still occurred. This paper describes the principles of internal fixation in minimally invasive lateral locked plating in elderly patients with osteoporotic distal femur fractures as well as how to avoid complications.

Inhibition of hepatitis B virus S gene expression by anti-gene locked nucleic acid in vivo / 医学研究生学报

Objective There is still a lack of effective treatment for hepatitis B. The article aimed to investigate the inhibito-ry and antiviral effects of hepatitis B virus(HBV)S gene expression by anti-gene locked nucleic acid(LNA)in vivo in transgenic mice. Methods The HBV transgenic mice were divided into 5 groups by random number,6 in each group. They were blank group, irrelevant sequence group,lamivudine group,antisense locked nucleic acid group,and anti-gene locked nucleic acid group respective-ly. The lamivudine group was treated by oral gastric lavage,with 2mg/kg dose 2 times per day for continuous 7d,and the rest groups were injected with 500 mL by tail vein injection at 1,3,5 d after ad-ministration. HBV DNA was tested by real-time quantitative polymer-ase chain reaction(qPCR);HBsAg was tested by ELISA;mRNA of HBV S gene was detected by reverse transcription PCR(RT-PCR);the positive rate of HBsAg in liver cells was detected by immunohisto-chemistry. Results After the treatment of anti-gene locked nucleic acid on 3rd,5th,7thday,the inhibition rate of HBV DNA were 37.18%,50.27%,61.46%,and HBsAg were 30.17%,44%,57.76%. The inhibitory effect on 7thday was more obvious than those of the blank group,the unrelated sequence group,the lamivudine group and the antisense lock nucleic acid group,and the difference was statistically significant(P<0.05).The expression of mRNA S gene HBV(0.33)and liver cells HBsAg positive rate(31%)was signif-icantly reduced compared with control group(P<0.05).No abnormal change was found in the function of liver and kidney tests and tis-sue HE staining. Conclusion Anti-gene lock nucleic acid targeting to S gene has strong inhibitory effects on HBV replication and expression in transgenic mice,which provides theoretical and experimental knowledge for HBV gene therapy.

Antiviral effect of hepatitis B virus S gene-specific anti-gene locked nucleic acid in transgenic mice / 中华肝脏病杂志

Objective@#To investigate the antiviral effect of hepatitis B virus (HBV) S gene-specific anti-gene locked nucleic acid (LNA) in transgenic mice.@*Methods@#A total of 30 HBV transgenic mice were randomly divided into blank control group (5% glucose + liposome), unrelated sequence control group, lamivudine control group, antisense LNA control group, and anti-gene LNA group, with 6 mice in each group. The mice in the lamivudine group were given lamivudine by gavage, and LNA was injected via the caudal vein. Quantitative real-time PCR was used to measure serum HBV DNA, ELISA was used to measure serum HBsAg, RT-PCR was used to measure HBV S mRNA level in the liver, and immunohistochemistry was used to measure the level of HBsAg in hepatocytes.@*Results@#At 3, 5, and 7 days after treatment, there were significant changes in the inhibition rates of HBV DNA (37.18%, 50.27%, and 61.46%, respectively) and HBsAg (30.17%, 44.00%, and 57.76%, respectively) achieved by anti-gene LNA (P < 0.01), and there were significant differences between the anti-gene LNA group and the other four control groups (P < 0.05). In the anti-gene LNA group, the relative mRNA expression of HBV S gene was 0.33 and the percentage of HBsAg-positive hepatocytes was 31%, which were significantly different from these two indices in the control groups (P < 0.05). There were no abnormal changes in liver/renal biochemical parameters and HE staining results.@*Conclusion@#Anti-gene LNA targeting at HBV S gene has a strong antiviral effect in transgenic mice, which provides theoretical and experimental bases for gene therapy for HBV.

LOCKED PUBIC SYMPHYSIS: A CASE REPORT AND REVIEW OF LITERATURE

@#Locked pubic symphysis is a rare form of pelvic injury that usually occurs after a lateral compression injury to the pelvis, where the intact pubis is trapped behind the contralateral pubis. To the best of our knowledge, there were 25 similar cases reported in the English literature since it was first described in 1952. We present a case of locked pubic symphysis with a left iliac wing fracture and a left femur shaft fracture requiring open reduction and internal fixation. We also reviewed previous reported cases of locked pubic symphysis and analysed the pattern of presentation and guide to management of such injuries. We propose a classification system for grading overlapping pubic symphysis that will provide a better guide to the management of such injuries

Mini locked-plate trans-carpometacarpal joint internal fixation for treating comminuted fracture of base of the fifth metacarpal / 中国修复重建外科杂志

Objective: To evaluate the effectiveness of open reduction and trans-carpometacarpal joint internal fixation with mini locked-plate for treatment of comminuted fracture of base of the fifth metacarpal. Methods: Between July 2015 and December 2017, 8 cases of comminuted fractures of base of the fifth metacarpals were treated with open reduction and trans-carpometacarpal joint internal fixation with mini locked-plate. There were 7 males and 1 female with an age of 19-45 years (mean, 32.5 years). The causes of injury included 2 cases of hitting hard objects while clenching fist, 6 cases of falling injury. There were 2 cases of subluxation of fifth carpal joints and 1 case of dislocation. The time from injury to operation was 1-5 days (mean, 3.5 days). The stability of fracture ends could not be maintained by preoperative evaluation without over articular fixation or short time over articular fixation. Postoperative complications and fracture healing were observed, and hand function was evaluated at last follow-up according to the total active motion (TAM) recommended by the Branch of Hand Surgery of Chinese Medicine Association. Results: All the incisions healed by first intention without complications such as wound infection, cutaneous necrosis, tendon or nerve injury. All the patients were followed up 6-18 months (mean, 12 months). All fractures healed with the healing time of 12-16 weeks (mean, 13 weeks). Within 4 months after operation, all patients were able to return to pre-injury job. At last follow-up, according to the TAM recommended by the Branch of Hand Surgery of Chinese Medicine Association, the results were excellent in 7 cases, good in 1 case, with the excellent and good rate of 100%. Conclusion: Applying of mini locked-plate for treatment of comminuted fractures of base of the fifth metacarpal, of which cannot obtain stable fixation through non-transarticular or short-time transarticular fixation, can achieve satisfactory functional results with very few complications through trans-carpometacarpal joint approach, thus the procedure can be used as an alternative operation scheme.