Risk factors for infections after arthroscopic rotator cuff repair / 中国骨伤

OBJECTIVE@#To explore risk factors for infections after arthroscopic rotator cuff repair, and improve the under standing for reducing infection.@*METHODS@#Clinical data of 2 591 patients who underwent arthroscopic rotator cuff repair from January 2019 to January 2022 were retrospectively analyzed, including 1 265 males and 1 326 females, aged from 25 to 82 years old with an average age of (51.5±15.6) years old. They were divided into infection group(n=18) and uninfected group(n=2 573) according to whether or not patients had postoperative infection. Gender, age, smoking, diabetes, body mass index, local closure within 1 month before operation, operation time, preventive use of antibiotics, and internal fixation implantation between two groups were recorded. Univariate Logistic regression analysis screened factors associated with infections after arthroscopic rotator cuff repair. Theresultswere entered into the multivariate logistic regression analysis, screening the high risk factors for infections after arthroscopic rotator cuff repair.@*RESULTS@#In 2 591 patients, 18 patients were infected after operation, infection rate was 0.69%. Univariate Logistic regression analysis showed that gender, age, operation time, antibiotic prophylaxis, internal fixation implantation were risk factors for infections after arthroscopic rotator cuff repair. Multivariate Logistic regression analysis showed male(OR=14.227), age≥65 years(OR=34.313), operation time≥2 h (OR=15.616), without antibiotic prophylaxis(OR=4.891), and internal fixation implantation(OR=5.103) were major risk factors for infection after arthroscopic rotator cuff repair(P<0.05).@*CONCLUSION@#Male, age≥65 years, operation time≥2 h, without antibiotic prophylaxis and internal fixation implantation were independent risk factors for infection after arthroscopic rotator cuff repair. Early diagnosis and timely treatment should be carried out to reduce the incidence of infection.

Spinal cord ischemia as intraoperatory complication in shoulder surgery positioned in beach chair: case report

Abstract Spinal cord infarction is an uncommon phenomenon, which can be caused by different etiologies, constituting a real diagnostic challenge which can lead to devastating consequences. General anesthesia in beach chair positioning with intraoperative hypotension in order to avoid surgical bleeding are associated with hypoperfusion and potential neurological ischemia-related complications. We present a case of spinal cord ischemia in the context of shoulder surgery in a beach chair position.

Rol de la artroscopía en fracturas de platillo tibial: revisión bibliográfica / Role of arthroscopy in tibial plateau fractures: bibliographic review / Papel da artroscopia nas fraturas do planalto tibial: revisão bibliográfica

Objetivo: El objetivo del presente estudio es explorar y describir resultados y experiencias en el tratamiento de las fracturas de platillo tibial Schatzker1 I-IV con asistencia artroscópica para obtener reducción como parte de la técnica de fijación interna (ARIF). Metodología: Se realizó una búsqueda sistematizada en diferentes motores de búsqueda como Pubmed y Lilacs. Se buscó con la misma metodología por 2 revisores independientes utilizando términos MESH "Tibial Fracture", "Arthroscopic". Se incluyeron artículos publicados en los últimos 5 años (2014 a Setiembre 2020), que muestren resultados clínicos de los procedimientos, en inglés o español, en humanos y mayores de 18 años. Resultados: Siguiendo los criterios de inclusión se identificaron 114 títulos, y finalmente 9 artículos fueron incluidos en nuestra revisión sistematizada. De los 9 artículos revisados 5 corresponden a series de casos con un nivel de evidencia IV, 3 corresponden a estudios comparativos retrospectivos entre técnicas de reducción abierta y fijación interna (ORIF) y ARIF con nivel de evidencia III y un estudio corresponde a un nivel de evidencia I. Un total de 217 pacientes fueron intervenidos mediante ARIF en nuestra revisión, el tiempo promedio de seguimiento fue de 24.9 meses (12-90 m), en cuanto al tipo de fractura las más frecuentes fueron las fracturas de platillo tibial Schatzker II y III, la lesión asociada más frecuente fue la lesión meniscal seguida de la rotura del ligamento cruzado anterior. En cuanto al porcentaje total de resultados obtenidos independientemente de cada score utilizado, el 98% aproximadamente obtuvo resultados buenos o excelentes. El porcentaje de complicaciones operadas con asistencia artroscópica resultó ser aproximadamente del 6.5%, siendo la complicación más frecuente la trombosis venosa profunda con 6 casos. Conclusiones: De nuestra revisión podemos concluir que la asistencia artroscópica es útil en el tratamiento de las fracturas de platillo tibial Schatzker I-IV, siendo una técnica que provee resultados funcionales satisfactorios, sin incrementar el número de complicaciones y permite tratar lesiones asociadas en el mismo acto.

Objective: The objective of this study is to explore the experience and the results of Schatzker1 I-IV tibial plateau fractures internal fixation technique (ARIF) with arthroscopic assistance Methodology: A systematic review was carried out in different search engines such as Pubmed and Lilacs. The same methodology was applied by two independent reviewers using MESH terms "Tibial Fracture", "Arthroscopic". Articles published in the last 5 years (2014 to September 2020) were included, showing clinical results of the procedures, in English or Spanish, in humans and over 18 years of age. Results: Following the inclusion criteria, 114 titles were identified, and finally 9 articles were included in our systematic review. Of the 9 articles reviewed, 5 were case series (level of evidence IV), 3 retrospective comparative studies between open reduction and internal fixation techniques (ORIF) and ARIF with level of evidence III and one study was level of evidence I. A total of 217 patients underwent ARIF surgery in our review, the average follow-up time was 24.9 months (12-90 m), in terms of the type of fracture, the most frequent were Schatzker II tibial plateau fractures and III, the most frequent associated injury was meniscal injury followed by anterior cruciate ligament tear. Regarding the total percentage of results obtained independently of each score used, approximately 98% obtained good or excellent results. The percentage of complications with arthroscopic assistance turned out to be approximately 6.5%, the most frequent complication being deep vein thrombosis with 6 cases. Conclusions: From our review we can conclude that arthroscopic assistance is useful in the treatment of Schatzker I-IV tibial plateau fractures, since it provides satisfactory functional results, without increasing the number of complications and allows treating associated injuries simultaneously.

Objetivo: o objetivo deste estudo é explorar e descrever os resultados e experiências no tratamento das fraturas do planalto tibial de Schatzker1 I-IV com auxílio artroscópico para obter redução como parte da técnica de fixação interna (ARIF). Metodologia: : Foi realizada uma busca sistemática em diferentes motores de busca, como Pubmed e Lilacs. Foi pesquisado com a mesma metodologia por 2 revisores independentes usando os termos do MESH "Tibial Fracture", "Arthroscopic". Foram incluídos artigos publicados nos últimos 5 anos (2014 a setembro de 2020), mostrando resultados clínicos dos procedimentos, em inglês ou espanhol, em humanos e maiores de 18 anos. Resultados: Seguindo os critérios de inclusão, 114 títulos foram identificados e, finalmente, 9 artigos foram incluídos em nossa revisão sistemática. Dos 9 artigos revisados, 5 correspondem a séries de casos com nível de evidência IV, 3 correspondem a estudos comparativos retrospectivos entre técnicas de redução aberta e fixação interna (ORIF) e ARIF com nível de evidência III e um estudo corresponde a nível de evidência . evidências I. Um total de 217 pacientes foram submetidos a ARIF em nossa revisão, o tempo médio de acompanhamento foi de 24,9 meses (12-90 m), em termos do tipo de fratura, as mais frequentes foram as fraturas do planalto tibial de Schatzker II e III , a lesão associada mais frequente foi a lesão meniscal seguida de ruptura do ligamento cruzado anterior. Em relação ao percentual total de resultados obtidos independentemente de cada escore utilizado, aproximadamente 98% obtiveram resultados bons ou excelentes. O percentual de complicações operadas com assistência artroscópica revelou-se em torno de 6,5%, sendo a complicação mais frequente a trombose venosa profunda com 6 casos. Conclusões: Da nossa revisão podemos concluir que a assistência artroscópica é útil no tratamento das fraturas do planalto tibial de Schatzker I-IV, sendo uma técnica que fornece resultados funcionais satisfatórios, sem aumentar o número de complicações e permite tratar lesões associadas no mesmo ato.

Perineural dexamethasone in ultrasound-guided interscalene brachial plexus block with levobupivacaine for shoulder arthroscopic surgery in the outpatient setting: randomized controlled trial / Dexametasona perineural em bloqueio de plexo braquial interescalênico com levobupivacaína guiado por ultrassonografia para artroscopia de ombro em regime ambulatorial: ensaio clínico controlado e randomizado

Abstract Background and objectives: In shoulder arthroscopy, on an outpatient basis, the patient needs a good control of the postoperative pain that can be achieved through regional blocks. Perineural dexamethasone may prolong the effect of these blocks. The aim of this study was to evaluate the effect of perineural dexamethasone on the prolongation of the sensory block in the postoperative period for arthroscopic shoulder surgery in outpatient setting. Methods: After approval by the Research Ethics Committee and informed consent, patients undergoing arthroscopic shoulder surgery under general anesthesia and ultrasound-guided interscalene brachial plexus block were randomized into Group D - blockade performed with 30 mL of 0.5% levobupivacaine with vasoconstrictor and 6 mg (1.5 mL) of dexamethasone and Group C - 30 mL of 0.5% levobupivacaine with vasoconstrictor and 1.5 mL of 0.9% saline. The duration of the sensory block was evaluated in 4 postoperative moments (0, 4, 12 and 24 hours) as well as the need for rescue analgesia, nausea and vomiting incidence, and Visual Analog Pain Scale (VAS). Results: Seventy-four patients were recruited and 71 completed the study (Group C, n = 37; Group D, n = 34). Our findings showed a prolongation of the mean time of the sensitive blockade in Group D (1440 ± 0 min vs. 1267 ± 164 min, p < 0.001). It was observed that Group C had a higher mean pain score according to VAS (2.08 ± 1.72 vs. 0.02 ± 0.17, p < 0.001) and a greater number of patients (68.4% vs. 0%, p < 0.001) required rescue analgesia in the first 24 hours. The incidence of postoperative nausea and vomiting was not statistically significant. Conclusion: Perineural dexamethasone significantly prolonged the sensory blockade promoted by levobupivacaine in interscalene brachial plexus block, reduced pain intensity and rescue analgesia needs in the postoperative period.

Resumo Justificativa e objetivos: Na artroscopia de ombro em regime ambulatorial, o paciente necessita de um bom controle da dor pós-operatória, que pode ser conseguido por meio de bloqueios regionais. A dexametasona perineural pode prolongar o efeito desses bloqueios. O objetivo deste estudo foi avaliar o efeito da dexametasona perineural quanto ao prolongamento do bloqueio sensitivo no período pós-operatório para cirurgia artroscópica de ombro em regime ambulatorial. Métodos: Após aprovação do Comitê de Ética em Pesquisa e consentimento informado, foram incluídos no estudo pacientes submetidos a cirurgia artroscópica de ombro sob anestesia geral e bloqueio de plexo braquial interescalênico guiado por ultrassonografia. Eles foram randomizados nos Grupo D - bloqueio com 30 mL de levobupivacaína 0,5% com vasoconstritor e 6 mg (1,5 mL) de dexametasona, e Grupo C - bloqueio com 30 mL de levobupivacaína 0,5% com vasoconstritor e 1,5 mL solução salina. A duração do bloqueio sensitivo foi avaliada em quatro momentos pós-operatórios (0, 4, 12 e 24 horas), assim como a necessidade de analgesia de resgate, incidência de náuseas e vômitos e Escala Visual Analógica de Dor (EVA). Resultados: Setenta e quatro pacientes foram randomizados e 71 completaram o estudo (Grupo C, n = 37; Grupo D, n = 34). Observou-se um prolongamento do tempo médio de bloqueio sensitivo no Grupo D (1440 ± 0 min vs. 1267 ± 164 min; p< 0,001). Pacientes do Grupo C apresentaram maior média de escore de dor de acordo com a EVA (2,08 ± 1,72vs. 0,02 ± 0,17; p< 0,001) e um maior número de pacientes solicitou analgesia de resgate nas primeiras 24 horas (68,4%vs.0%; p< 0,001). A incidência de náuseas e vômitos não foi estatisticamente significante. Conclusão: A dexametasona perineural prolongou significativamente o bloqueio sensitivo da levobupivacaína no bloqueio de plexo braquial interescalênico, reduziu a intensidade de dor e a necessidade de analgesia de resgate pelo paciente no período pós-operatório.

Extravasación intraabdominal de líquido posterior a artroscopía de cadera: Reporte de un caso / Intraabdominal fluid extravasation after hip arthroscopy: Case report

Intraabdominal fluid extravasation (IAFE) is a rare complication of hip arthroscopy which has a wide range of clinical presentations, from mild abdominal distention to abdominal compartment syndrome and cardiorespiratory arrest. There are few detailed reports of cases in literature, therefore, considering risk factors, high pathological suspicion and training in ultrasound are key points to prevent complications and health costs. In this report, the case of a 29 year old male patient with severe abdominal pain during the immediate postoperative period of an arthroscopic hip surgery is presented, which led to a review of the literature on the subject.

La extravasación intraabdominal de líquido es una complicación poco frecuente de la artroscopia de cadera que presenta un amplio rango de manifestaciones clínicas, desde leve distensión abdominal hasta síndrome compartimental y paro cardiorrespiratorio. Hay escasos reportes de casos en la literatura, por lo que la alta sospecha considerando factores de riesgo y el ultrasonido son claves para prevenir sus complicaciones y costos asociados. En este reporte, se presenta el caso de un paciente masculino de 29 años con dolor abdominal intenso durante el postoperatorio inmediato de una artroscopia de cadera, lo que llevó a una revisión de la literatura sobre el tema.

Hemidiaphragmatic paralysis with continuous interscalene block and diluted solutions of levobupivacaine / Bloqueo interescalénico y parálisis diafragmática con dosis diluidas de levobupivacaína

The continuous interscalene block represents the analgesic standard for shoulder surgery. However, the incidence of hemidiaphragmatic paralysis can reach up to 100% of cases. We hypothesized that more dilute local anesthetics would decrease the phrenic palsy at 24 hours. METHODS: Prospective series of patients undergoing arthroscopic shoulder surgery with continuous interscalene block. A 15-ml bolus of lidocaine 1%-levobupivacaine 0.25% plus an infusion of levobupivacaine 0.04% at an 8 mL/h rate plus 5 mL boluses on-demand with a 20-minutes lockout was used until discharge. Hemidiaphragmatic excursion was evaluated with M-mode ultrasound in the subcostal region before blocks, in the post-anesthetic unit, and at 24 h. The primary outcome was the presence of hemidiaphragmatic paralysis at 24 hours. Secondary outcomes included postoperative pain, amount of rescue boluses, postoperative opioids consumption, and side effects. RESULTS: Thirty patients were recruited and analyzed. The incidence of diaphragm paralysis at 24 h was 96.7%. The median [IQR] of pain at rest (patients with shoulder immobilizer) in a NRS from 0 to 10 at 0.5; 1; 3; 6; 12; 24; 48; 72 hours were 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-2]; 0 [0-2.5]; 0 [0-2], respectively. The median [IQR] consumption of LA boluses was 1.5 [0-7]. There were no postoperative morphine requirements. The most frequent side effect was Horner´s syndrome. CONCLUSIONS: Continuous interscalene block with 0.04% levobupivacaine provides adequate analgesia for arthroscopic shoulder surgery but does not prevent hemidiaphragmatic paralysis at 24 hours under the conditions of this study.

El bloqueo interescalénico representa el estándar analgésico para cirugía de hombro. No obstante, la incidencia de parálisis hemidiafragmática puede alcanzar 100% de los casos. Nuestra hipótesis es que infusiones con anestésicos locales más diluidos disminuirían la PHD 24 horas postbloqueo. MÉTODOS: Serie prospectiva de pacientes sometidos a cirugía artroscópica electiva de hombro con bloqueo interescalénico continuo. Un bolo de 15 mL de lidocaína 1%-levobupivacaína 0,5% más infusión postoperatoria de levobupivacaína al 0,04% a 8 ml/h más bolos a demanda de 5 mL con intervalo de 20 minutos hasta el alta. La excursión hemidiafragmática se evaluó con ultrasonido con transductor curvo 2-5 MHz en modo M en la región infracostal antes del bloqueo, en la unidad postanestésica y a las 24 h, antes del alta. El outcome primario fue la presencia de parálisis hemidiafragmática 24 horas postbloqueo. Los resultados secundarios incluyeron dolor postoperatorio, total de bolos de rescate, requerimiento de opioides postoperatorios y efectos secundarios. RESULTADOS: Treinta pacientes fueron reclutados y analizados. La incidencia de PHD a las 24 h fue 96,7%. La mediana [RIC] de dolor en reposo (pacientes con inmovilizador de hombro) medido en escala numérica de 0 a 10, a las 0,5; 1; 3; 6; 12; 24; 48; 72 horas fueron 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-2]; 0 [0-2.5]; 0 [0-2] respectivamente. La mediana [RIC] de consumo de bolos de rescate fue 1,5 [0-7]. No hubo pacientes con requerimientos de morfina postoperatoria. El efecto colateral más frecuente fue el síndrome de Horner. CONCLUSIONES: El bloqueo interescalénico continuo con levobupivacaína 0,04% proporciona analgesia postoperatoria adecuada, pero no evita la PHD a las 24 h en las condiciones de esta serie.

Rotura intraoperatoria de cánula de irrigación de artroscopía. Complicación infrecuente / Intraoperative rupture of arthroscopical irrigation cannula. Infrequent complication

La artroscopía de rodilla es un procedimiento quirúrgico frecuente con baja incidencia de complicaciones. La rotura de instrumental y retención intraarticular del mismo son sumamente infrecuentes. Presentamos un caso de rotura por fatiga de una cánula de irrigación y retención intraarticular de parte de la misma en una paciente intervenida quirúrgicamente por una artroscopía de rodilla. En la bibliografía encontramos un solo caso similar. El fragmento presentaba bordes netos que impresionaban fatiga en zona de soldadura de fábrica. Es probable que la falla haya ocurrido durante una maniobra que se realiza "a ciegas" al final del procedimiento. Consideramos fundamental ser meticulosos en la supervisión del instrumental tanto antes como al final del procedimiento quirúrgico. En caso de encontrarnos con esta complicación, resolverla utilizando todas las herramientas al alcance. Nivel de evidencia: IV. Tipo de estudio: Reporte de caso

Daño neurológico perioperatorio. Identificación de factores de riesgo, prevención y estudios relacionados / Perioperative nerve injury. Risk factor identification, prevention and work-up

BACKGROUND: Regional anesthesia techniques can have adverse effects, like peripheral nerve injuries. This can affect the practitioner on the choice of techniques when offering multimodal analgesia. CASE REPORT: We present the case of an arthroscopic rotator cuff repair on a patient with no comorbidities who presented peripheral nerve injury during post-op. Initially thought to have occurred as a consequence of the anesthetic technique, further study of the patient revealed the injuries to have been produced by the arthroscopic surgery. CONCLUSION: There are multiple factors that influence the possibility of peripheral nerve injury associated with nerve blocks. They can be grouped as related to the patient, the anesthetic technique or the surgical technique, the latter being the most relevant. If a patient manifests signs of peripheral nerve injury high-resolution magnetic resonance of the neural tissue must be performed immediately. Sensory nerve conduction study and electromyography must be performed 4 weeks after by an expert neurologist.

INTRODUCCIÓN: La anestesia regional puede producir como efecto adverso lesiones de nervios periféricos, lo que puede hacer desistir al anestesiólogo de realizar técnicas que mejoran la analgesia multimodal. CASO CLÍNICO: Se presenta el caso de un paciente sin comorbilidades que se operó de reparación artroscópica del manguito rotador y presentó daño neurológico postoperatorio. Inicialmente se sospechó que el daño había sido producido durante la técnica anestésica, sin embargo, el estudio adecuado demostró que el daño se relacionaba con la técnica quirúrgica. CONCLUSIÓN: Existen factores que influyen en la posibilidad de daño neurológico asociado a bloqueos de nervios periféricos que pueden ser propios del paciente, de la técnica anestésica o quirúrgicos, siendo estos últimos los más relevantes. En un paciente con clínica compatible debe realizarse resonancia magnética del tejido neural de alta resolución de forma inmediata; estudio de conducción neural sensitiva y electromiografía a las 4 semanas de evolución por un neurólogo experto.

Osteomielitis por mucorales (OMM) asociada a artroscopia de reparación de ligamento cruzado anterior: investigación epidemiológica y recomendaciones para su prevención / Mucor osteomyelitis after arthroscopic repair of ACL. Epidemiological investigation

OBJETIVO: Describir la investigación epidemiológica de osteomielitis por Mucorales (OMM) post reparación artroscópica de LCA (RA-LCA) en Argentina. MATERIAL Y MÉTODO: 1) Revisión de los casos; 2) Relevamiento de 3 instituciones; 3) Cultivo micológico de materiales quirúrgicos; 4) Encuesta a instrumentadoras; 5) Secuenciación de las cepas de Rhizopus y 6) Redacción de recomendaciones. RESULTADOS: Del 2005 al 2017 se identificaron 40 casos de OMM (Rhizopus sp.) post reparación artroscópica de LCA en pacientes inmunocompetentes de 12 jurisdicciones de Argentina. El diagnóstico fue por cultivo (22/31), y por anatomía patológica (9). La edad promedio fue 29 años. El 84% de 38 casos eran varones. Intervinieron 13 ortopedias. El implante fue importado en 8/20 casos y nacional en 12. En las 3 instituciones se observó: manejo inadecuado del aire de quirófano, variabilidad en la limpieza del artroscopio, en el taladro utilizado, y en el manejo de materiales que llegan de las ortopedias y falta de trazabilidad de los implantes. Los cultivos micológicos de los materiales fueron negativos. La encuesta a instrumentadores confirmó los hallazgos de los relevamientos. La secuenciación de las cepas de Rhizopus demostró predominio de policlonalidad. CONCLUSIÓN: La OMM es una complicación posible luego de la RA-LCA en instituciones privadas de Argentina. No se identificó un origen único. Se detectaron múltiples prácticas que favorecen la contaminación de la cirugía con hongos filamentosos (manejo del aire de quirófano, del artroscopio, de los materiales provenientes de ortopedia, etc.). En base a estos hallazgos la Asociación Argentina de Artroscopía sugiere medidas de prevención. Implicancia clínica: Prevención de osteomielitis por Mucorales post- cirugía artroscópica para ligamento cruzado anterior. Tipo de estudio: Serie de casos. Nivel de Evidencia: IV.

OBJECTIVE: To describe the epidemiological investigation of Mucor osteomyelitis (MO) after arthroscopic repair of ACL (ARACL) in Argentina. MATERIAL Y METHODS: 1) Review of cases; 2) Survey of 3 institutions; 3) Mycological culture of surgical materials; 4) Survey of instrumentists; 5) Sequencing of Rhizopus strains and 6) Writing of recommendations. RESULTS: From 2005 to 2017, 40 cases of MO (Rhizopus sp.) Post AR-ACL were identified in immunocompetent patients from 12 jurisdictions of Argentina. The diagnosis was made by culture (22/31), and by pathology (9). The average age was 29 years. 84% of 38 cases were male. Thirteen orthopedics intervened. The implant was imported in 8/20 cases and national in 12. In the 3 institutions it was observed: inadequate handling of the operating room air, variability in the cleaning of the arthroscope, in the drill used, and in the handling of materials that come from the orthopedics and lack of traceability of the implants. The mycological cultures of the materials were negative. The survey of instrumentists confirmed the findings of the surveys. The sequencing of Rhizopus strains showed a predominance of polyclonality. CONCLUSION: MO is a possible complication after AR-ACL in private institutions in Argentina. A unique origin was not identified. Multiple practices that favor the contamination of surgery with filamentous fungi (handling of operating room air, arthroscope, materials from orthopedics, etc.) were detected. Based on these findings, the Argentine Association of Arthroscopy suggests prevention measures. Clinical relevance: Prevention of Mucor osteomyelitis after arthroscopic surgery for anterior cruciate ligament. Type study: Cases series. Level of evidence: IV.

Cirugía de hombro en posición en silla de playa: prevención de complicaciones isquémicas / Shoulder arthroscopy in a beach chair position: prevention of ischaemic complications

La cirugía artroscópica de hombro en posición de silla de playa es una cirugía frecuente y se asocia a buenos resultados. Causa preocupación el reporte de casos de isquemia cerebral asociados a morbimortalidad. Este artículo hace una revisión de la literatura referente a estos casos, realizando un análisis de los factores involucrados y de los cambios que ocurren al sentar a un paciente bajo el efecto de la anestesia general y/o regional. Es muy importante que el equipo quirúrgico comprenda las limitaciones de la técnica y concilie una buena exposición quirúrgica junto con el menor impacto hemodinámico. Actualmente se sugiere sentar a los pacientes con ángulos no mayores a 45°, evitar errores en la lectura de la presión arterial, que traduzcan un adecuado flujo sanguíneo cerebral. Cuando se mide oxigenación cerebral mediante NIRS (ScO2) las mayores caídas de los valores se asocian a anestesia general en ventilación mecánica con hiperventilación y en ángulos de posición de 80-90°. La anestesia regional se asocia a menores caídas de ScO2, pero requiere de un equipo con experiencia...

Shoulder arthroscopic surgery performed in the beach chair position is common and is associated with good results. The report of cases of cerebral ischaemia associated with morbidity and mortality is a cause for concern. This article presents a review of the literature concerning these cases, as well as an analysis of the factors involved and the changes that occur in patients when the beach chair position is used under general or regional anaesthesia. It is very important that the surgical team understands the limitations of the technique, and combines a good surgical exposure along with the least haemodynamic impact. Beach chair positions with angles not greater than 45°, are now suggested in order avoid errors in the blood pressure reading, which may lead to an adequate cerebral blood flow. When measuring cerebral oxygenation using NIRS (ScO2), the biggest drops in the values are associated with general anaesthesia and mechanical ventilation with hyperventilation and position angles of 80-90 degrees. Regional anaesthesia is associated with lower falls of ScO2, but requires an experienced team...

Arthroscopic Bioabsorbable Screw Fixation of Unstable Osteochondritis Dissecans in Adolescents: Clinical Results, Magnetic Resonance Imaging, and Second-Look Arthroscopic Findings

BACKGROUND: This study aimed to evaluate the clinical and radiological outcomes of arthroscopic bioabsorbable screw fixation in osteochondritis dissecans (OCD) in adolescent patients with unstable lesions causing pain. METHODS: The study included 11 patients (10 males and 1 female) with OCD who underwent arthroscopic bioabsorbable screw fixation between July 2007 and February 2014 and were available for follow-up for more than 12 months. The mean age at diagnosis was 16.3 years (range, 11 to 19 years), and the average follow-up period was 51 months (range, 12 to 91 months). Clinical results were evaluated using the Knee Injury and Osteoarthritis Outcome Score (KOOS), Lysholm knee score, and International Knee Documentation Committee (IKDC) score measured before surgery and at follow-up. Functional evaluation was made using the Tegner activity scale. Magnetic resonance imaging (MRI) and second-look arthroscopy were performed at the 12-month follow-up. RESULTS: Between the preoperative assessment and follow-up, improvements were seen in the KOOS (range, 44.9 to 88.1), Lysholm knee score (range, 32.6 to 82.8), and IKDC score (range, 40.8 to 85.6). The Tegner activity scale also improved from 2.8 to 6.1. Based on postoperative MRI, there were eight Dipaola grade I cases and three grade II cases. No complications due to fixation failure developed in any case. Second-look arthroscopy at 12 months postoperatively revealed that the lesion was covered with cartilage in all cases. CONCLUSIONS: For unstable OCD lesions causing pain in adolescents, arthroscopic bioabsorbable screw fixation provided favorable outcomes with reduced pain and restoration of movement. Therefore, it should be considered as an effective treatment for OCD.

Compartment Syndrome Following Arthroscopic Removal of a Bullet in the Knee Joint after a Low-Velocity Gunshot Injury

Gunshot injuries are getting more frequently reported while the civilian (nongovernmental) armament increases in the world. A 42-year-old male patient presented to emergency room of Istanbul Medipol University Hospital due to a low-velocity gunshot injury. We detected one entry point on the posterior aspect of the thigh, just superior to the popliteal groove. No exit wound was detected on his physical examination. There was swelling around the knee and range of motion was limited due to pain and swelling. Neurological and vascular examinations were intact. Following the initial assessment, the vascular examination was confirmed by doppler ultrasonography of the related extremity. There were no signs of compartment syndrome in the preoperative physical examination. A bullet was detected in the knee joint on the initial X-rays. Immediately after releasing the tourniquet, swelling of the anterolateral compartment of the leg and pulse deficiency was detected on foot in the dorsalis pedis artery. Although the arthroscopic removal of intra-articular bullets following gunshot injuries seems to have low morbidity rates, it should always be considered that the articular capsule may have been ruptured and the fluids used during the operation may leak into surrounding tissues and result in compartment syndrome.

Pinzamiento femoroacetabular, causa de dolor en la cadera en el adulto joven / Femoroacetabular impingement causing hip pain in young adults / Le pincement fémoro-acétabulaire à l'origine de la douleur aux hanches chez le sujet jeune

El dolor de la cadera en adultos ha sido tradicionalmente asociado con osteoartritis en dicha articulación. Sin embargo, vemos a muchos pacientes jóvenes con dolor en la cadera, sin artritis, en nuestras consultas. Recientemente, un anormal contacto entre el acetábulo y la unión de cabeza-cuello femoral, conocido como síndrome de pinzamiento femoroacetabular se ha reconocido como una causa preartrítica relativamente común de estos síntomas. Se realizó una amplia revisión bibliográfica con la finalidad de conocer la incidencia de pinzamiento femoroacetabular reportada en la literatura internacional así como todo lo relacionado con el diagnóstico clínico-radiológico y el tratamiento de esta afección. El pinzamiento femoroacetabular es una de las principales causas de dolor en la cadera del adulto joven así como de osteoartritis; la artroscopia de cadera va tomando un papel cada vez más preponderante en el tratamiento de esta afección.

Hip pain in adults has traditionally been associated with osteoarthritis in that joint. However, in our consultations we see many young patients with hip pain, with no arthritis. Recently, an abnormal contact between the acetabulum and the femoral head-neck union, known as femoroacetabular impingement syndrome has been recognized as a relatively common pre-arthritis cause of these symptoms. An extensive literature review was conducted in order to determine the incidence of femoroacetabular impingement reported in international literature and all related to the clinical and radiological diagnosis and treatment of this condition. Femoroacetabular impingement is a major cause of hip pain in adult and osteoarthritis; hip arthroscopy is taking an increasingly prominent role in the treatment of this condition.

Chez les adultes, la douleur de hanche a été d’habitude associée à une ostéoarthrite de cette dite articulation. Néanmoins, on peut voir dans nos cabinets pas mal de jeunes patients souffrant d’une douleur de hanche, sans arthrite. Un contact anormal entre l’acétabulum et la jonction tête et col du fémur, aussi appelé conflit fémoro-acétabulaire, a été récemment décrit comme une cause pré-arthritique relativement commune de ces symptômes. Une large analyse bibliographique a été réalisée afin de connaître l’incidence du conflit fémoro-acétabulaire rapportée dans la littérature internationale, ainsi que tout ce qui est en relation avec le diagnostic clinique et radiologique et le traitement de ce trouble. Le pincement fémoro-acétabulaire est l’une des principales causes de douleur de hanche, ainsi que d’ostéoarthrite, chez le sujet jeune; l’arthroscopie joue un rôle de plus en plus prépondérant dans le traitement de cette affection.

Histoplasmosis diagnosed after arthroscopy of the knee: case report

ABSTRACTFungal arthritis is a rare complication of arthroscopic surgeries, but its possibility should always be considered due its deleterious effects on any joint. Infection caused by the fungus Histoplasma capsulatum is the most common cause of respiratory tract infections by fungi, meanwhile histoplasmosis arthritis is more rare than all other fungal infections. However, their atypical forms of arthritis and the importance of early diagnosis and treatment cannot be over-emphasized. Herein we report a case of knee monoarthritis in an immunocompetent patient with histoplasmosis arthritis following an arthroscopic meniscetomy, diagnosed by synovial biopsy and culture performed during a second arthroscopic procedure. The joint was debrided in this second intervention and the patient received itraconazole initially and fluconazole latter on. The arthritis subsided after 10 months of treatment.

Effect of a Sleep Aid in Analgesia after Arthroscopic Rotator Cuff Repair

PURPOSE: The aim of this study was to evaluate the effects and safety of a sleep aid for postoperative analgesia in patients undergoing arthroscopic rotator cuff repair. MATERIALS AND METHODS: Seventy-eight patients were prospectively assigned to either the zolpidem group (multimodal analgesia+zolpidem; 39 patients) or the control group (multimodal analgesia; 39 patients). Self-rated pain levels were assessed twice a day using a visual analog scale (VAS). The need for additional rescue analgesic, duration of functional recovery, and adverse effects were assessed for the first 5 days after surgery. RESULTS: The mean number of times that additional rescue analgesic was required during 5 days after surgery was 2.1+/-2.0 in the zolpidem group and 3.3+/-2.8 in the control group, a significant difference. There were no significant differences between the two groups in mean VAS pain scores during the first 5 days after surgery, although the zolpidem group had lower VAS pain scores than the control group. Additionally, there were no significant differences in duration of functional recovery and adverse effects between the two groups. CONCLUSION: The use of zolpidem for analgesia after arthroscopic rotator cuff repair provided a significant reduction in the need for rescue analgesic without increasing adverse effects. Nevertheless, mean VAS pain scores during the first 5 days after surgery did not differ between the zolpidem group and the control group.

Rupturas parciales del espesor del manguito de los rotadores, diagnóstico y tratamiento artroscópico / Partial-thickness rotator cuff tear: diagnosis and arthroscopic treatment / Ruptures partielles de la coiffe des rotateurs, diagnostic et traitement sous arthroscopie

INTRODUCCIÓN: las rupturas parciales del espesor del manguito rotador (tendones del supraespinoso, infraespinoso) se consideran dos veces más frecuente que las rupturas completas del espesor. Los estudios utilizan la artroscopia como método de elección para su diagnóstico y la convierten en la regla de oro. Numerosos cirujanos consideran conservar intactas la parte sana de las fibras del tendón y reparar el área de ruptura; principio posible de cumplir con las técnicas de reparación artroscópicas. OBJETIVO: evaluar los resultados de la aplicación de la técnica artroscópica para el diagnóstico y la reparación de las rupturas parciales del espesor del manguito de los rotadores, conservando la parte sana del tendón. MÉTODOS: se repararon rupturas parciales del manguito rotador con técnica artroscópica de sutura y anclaje sin completar la ruptura del tendón del supraespinoso e infraespinoso desde enero 2008 hasta mayo de 2009. El estudio incluyó 47 hombros, 34 rupturas parciales de la superficie articular, 7 rupturas parciales de la superficie bursal y 6 rupturas parciales intratendinosas. Se realizó un seguimiento promedio de 14,5 meses (rango de 12 a 17 meses), la distribución según el sexo 34 masculinos (72,3 %) y 13 femeninos (27,7 %) y un promedio de edad de 47,5 años. El miembro dominante estuvo afectado en 38 pacientes (80,9 %). RESULTADOS: se obtuvo resultados excelentes y buenos en 91,5 % de los pacientes y 95,8 % resultados excelentes, buenos y regulares evaluados según la escala de Constant-Murley. CONCLUSIONES: la reparación artroscópica utilizando técnica de sutura y anclaje sin completar la ruptura ofrece ventajas. Se conserva la anatomía, preservando la parte sana del tendón y evitando la progresión a defectos completos del espesor.

INTRODUCTION: partial-thickness rotator cuff tears (supraspinatus tendon, infraspinatus) are considered twice as frequent as full thickness tears. Studies using arthroscopy as a method of choice for diagnosis and they turn it in the golden rule. Many surgeons consider fully maintain the healthy part of the tendon fibers and repair the rupture area; which is possible to comply with arthroscopic repair techniques. OBJECTIVE: evaluate the results of the application of arthroscopic technique for the diagnosis and repair of partial-thickness rotator cuff ruptures, preserving the healthy part of the tendon. METHODS: partial rotator cuff tears were repaired with arthroscopic suture anchor technique without completing thesupraspinatus and infraspinatus tendon rupture from January 2008 to May 2009. The study included 47shoulders, 34 partial tears of the joint surface, seven partial teras of bursal surface and 6 intratendinous partial tears. An average follow-up of 14.5 months (range 12-17 months) was conducted. Distribution by sex 34 male (72.3 %) and 13 female (27.7 %) and an average age of 47.5 years was performed. The dominant limb was affected in 38 patients (80.9 %). RESULTS: excellent results were obtained in 95.8% of patients and good results in 91.5 %. Results were assessed as excellent, good, regular according to the Constant-Murley scale results. CONCLUSIONS: arthroscopic repair using suture anchor technique without completing rupture offers advantages. Anatomy is conserved, while preserving the healthy part of the tendon and preventing progression to full thickness defects.

INTRODUCTION: les ruptures partielles de la coiffe de rotateurs (tendons du sus-épineux, du sous-épineux) sont considérées deux fois plus fréquentes que les ruptures complètes. Dans les études, l'arthroscopie est utilisée comme méthode de choix pour le diagnostic des ruptures de la coiffe des rotateurs, et dévient alors un gold standard. Plusieurs chirurgiens tendent à laisser intacte la partie saine des fibres tendineuses et à réparer seulement la zone de la rupture, ce qui est tout à fait possible grâce aux techniques de réparation sous arthroscopie. OBJECTIF: le but de cette étude est d'évaluer les résultats de la mise en application d'une technique de diagnostic et de réparation sous arthroscopie dans le traitement des ruptures partielles de la coiffe des rotateurs. MÉTHODES: depuis janvier 2008 jusqu'à mai 2009, on a éprouvé une technique de suture et d'ancrage sous arthroscopie pour la réparation des ruptures partielles de la coiffe des rotateurs. Cette étude a compris 47 épaules (34 ruptures partielles des capsules articulaires, 7 déchirures partielles de la bourse glénoïdale, et 6 ruptures partielles des tendons). On a réalisé un suivi de 14.5 mois en moyenne (12 à 17 mois), avec une distribution par sexes de 34 hommes (72.3 %) et 13 femmes (27.7 %), et une moyenne de 47.5 ans. Le membre supérieur dominant a été affecté chez 38 patients (80.9 %). RÉSULTATS: on a obtenu des résultats excellents et bons chez 91.5% des patients, et les résultats ont été évalués d'excellents, de bons et de moyens chez 95.8% des patients selon l'échelle de Constant-Murley. CONCLUSIONS: cette technique de suture et d'ancrage sous arthroscopie, sans compléter la rupture, montre des bénéfices; on protège l'anatomie en préservant la partie saine du tendon et en évitant l'évolution complète des anomalies au niveau de la coiffe.

Artroscopía de revisión en pacientes con fracaso de artroscopía de cadera primaria / Arthroscopic revision in failed hip arthroscopy

Introducción: La artroscopía de cadera ha crecido como opción de tratamiento en las últimas décadas, con buenos resultados reportados en la bibliografía. Sin embargo, existen pocos reportes sobre la artroscopía de revisión de cadera (ARC) y sus causas. Objetivo: Evaluar la evolución clínica de los pacientes tratados con ARC e identificar las causas del fracaso del tratamiento primario. Material y método: Entre Septiembre 2008 y Agosto 2012, en nuestra institución, se realizaron un total de 274 artroscopías en 264 pacientes (10 bilaterales) por el mismo cirujano. En 8 pacientes con persistencia de dolor de cadera, se realizó ARC de artroscopías primarias operadas en otro centro. Se llevó a cabo un estudio retrospectivo clínico y radiológico. Se utilizaron para la evaluación clínica el Harris Hip Score modificado, el score de WOMAC y la escala funcional UCLA. Resultados: El intervalo entre la primera artroscopía y la cirugía de revisión fue de 24 meses (rango, 4-49 meses). La causa de ARC predominante fue la persistencia del Síndrome de Fricción fémoro acetabular (N:7), hallándose 4 lesiones de CAM y 3 lesiones combinadas, CAM + PINCER. En el paciente restante la causa de ARC fue una lesión del ligamento redondo. A un seguimiento promedio de 26 meses (rango, 12-55 meses) todos los pacientes mejoraron el Harris Hip Score modificado (promedio preoperatorio de 60,35 puntos ®postoperatorio de 88,25 puntos), y el score de WOMAC (promedio preoperatorio: 38 puntos ® postoperatorio: 13,5 puntos). De acuerdo a la escala UCLA todos los pacientes registraron un aumento de 3,8 niveles promedio (rango de aumento: 2-6 niveles). El dolor según la escala visual análoga disminuyo de un promedio preoperatorio de 7,5 puntos a un posoperatorio de 2,8 puntos. Conclusiones: La causa más frecuente de cirugía de revisión fue la persistencia del dolor asociado a falta de corrección del síndrome de fricción fémoro-acetabular. Las lesiones labrales en cirugía primaria, no deben interpretarse como aisladas sino como consecuencia de dicho conflicto mecánico. La ARC corrigiendo las deformidades óseas en este grupo de pacientes brinda buenos resultados clínicos postoperatorios a corto plazo. Diseño del estudio: Serie de Casos. Nivel de evidencia: IV

Arthroscopic Percutaneous Repair of Anterosuperior Rotator Cuff Tear Including Biceps Long Head: A 2-Year Follow-up

BACKGROUND: To report the results of an arthroscopic percutaneous repair technique for partial-thickness tears of the anterosuperior cuff combined with a biceps lesion. METHODS: The inclusion criteria were evidence of the upper subscapularis tendon tear and an articular side partial-thickness tear of the supraspinatus tendon, degeneration of the biceps long head or degenerative superior labrum anterior-posterior, above lesions treated by arthroscopic percutaneous repair, and follow-up duration > 24 months after the operation. American Shoulder and Elbow Surgeons (ASES) score, constant score, the pain level on a visual analogue scale, ranges of motion and strength were assessed. RESULTS: The mean (+/- standard deviation) age of the 20 enrolled patients was 56.0 +/- 7.7 years. The forward flexion strength increased from 26.3 +/- 6.7 Nm preoperatively to 38.9 +/- 5.1 Nm at final follow-up. External and internal rotation strength was also significantly increased (14.2 +/- 1.7 to 19.1 +/- 3.03 Nm, 12.3 +/- 3.2 to 18.1 +/- 2.8 Nm, respectively). Significant improvement was observed in ASES and constant scores at 3 months, 1 year and the time of final follow-up when compared with preoperative scores (p < 0.001). The mean subjective shoulder value was 86% (range, 78% to 97%). CONCLUSIONS: The implementation of complete rotator cuff repair with concomitant tenodesis of the biceps long head using arthroscopic percutaneous repair achieved full recovery of normal rotator cuff function, maximum therapeutic efficacy, and patient satisfaction.

Rabdomiolisis post-artroscopia de hombro: reporte de caso / Post-arthroscopy shoulder rhabdomyolysis: case report

La rabdomiolisis constituye un síndrome infrecuente con elevada morbimortalidad y de etiología variada. La causa infecciosa representa un 25 por ciento de las rabdomiolisis postquirúrgica. Presentamos el caso de un paciente masculino de 21 años, cursando postquirúrgico de reparación artroscópica de labrum por luxación recidivante de hombro. A las doce horas postquirúrgicas se establece falla renal, con anuria e incremento de urea y creatinina. Elevación de encimas musculares, Creatinfosfocinasa (CPK) y Lactatodeshidrogenasa (LDH). Presentando edema regional en zona quirúrgica con incremento del dolor. Se realizan múltiples toilettes quirúrgicos, con cultivos que desarrollan Bacillus cereus; se confirma el diagnóstico por anatomía patológica. Paciente ingresa en hemodiálisis, se instaura tratamiento antibiótico específico, presentando una evolución favorable. El diagnóstico de esta patología requiere un alto índice de sospecha y exige un tratamiento enérgico, tendiente a evitar sus complicaciones.