Prótesis total de codo en el contexto de una seudoartrosis de olécranon. Técnica quirúrgica y reporte de tres casos / Total elbow arthroplasty in the context of a nonunion of the olecranon. Surgical technique and report of 3 cases

La indemnidad del aparato extensor es fundamental para un correcto funcionamiento de una prótesis de codo. Se ha considerado que la deficiencia del tríceps es una contraindicación relativa para la artroplastia, porque produce una contractura en flexión y un déficit de extensión activa. Estas limitaciones pueden afectar significativamente la mejora funcional que la artroplastia total de codo produce. Ante una seudoartrosis de olécranon, la colocación de una prótesis total de codo se presenta como un problema complejo que resolver. El objetivo de este artículo es describir la técnica quirúrgica para la colocación de una prótesis total de codo en el contexto de una seudoartrosis de olécranon, y comunicar tres casos. Nivel de Evidencia: IV

The integrity of the extensor apparatus is essential for the correct functioning of an elbow prosthesis. Triceps deficiency has been considered a relative contraindication for arthroplasty, because it produces a flexion contracture and an active extension deficit. These limitations can significantly affect the functional improvement that total elbow arthroplasty produces. Faced with an olec-ranon nonunion, the placement of a total elbow prosthesis is presented as a complex problem to be solved. The objective of this article is to describe the surgical technique for the placement of a total elbow prosthesis in the context of an olecranon nonunion, and to report three cases. Level of Evidence: IV

Artroplastia total de codo después de un proceso infeccioso. Cirugía en dos tiempos / Total elbow arthroplasty after an infection process. Two-stage surgery

Objetivo: Comunicar los resultados en pacientes con un proceso infeccioso del codo, tratados en 2 etapas quirúrgicas: la primera con un espaciador de cemento con antibiótico y la segunda con una artroplastia total de codo. materiales y métodos: Se descri-ben los criterios de inclusión, el diagnóstico de infección y las 2 etapas quirúrgicas. Resultados: Se incluyeron 10 pacientes (4 hombres y 6 mujeres, edad promedio 62 años). Causas iniciales: degenerativas (2 casos) y traumáticas (8 casos). Se realizaron 4 aloprótesis y 2 colgajos de dorsal ancho. Se identificaron 2 grupos: A (defectos óseos <4 cm) y B (>4 cm). El seguimiento fue de 5 años. La flexo-extensión fue de 117°/29° en el preoperatorio y 130°/29° en el posoperatorio; los puntajes de dolor fueron 6,5 y 2,5 (EAV); 40 y 80 (MEPS); y 56 y 30 (DASH), respectivamente. La fuerza de extensión fue de M5 (4 casos), M4 (2 casos), M3 (1 caso), M1 (2 casos) y M0 (1 caso). Un paciente tuvo una necrosis del colgajo que evolucionó con infección y 9 no tenían infección al final del seguimiento. Los pacientes del grupo A tenían menos cirugías previas y mejores resultados funcionales. Conclusiones: El tratamiento de un proceso infeccioso de codo mediante un espaciador de cemento con antibiótico permite controlar la infección en un alto porcentaje de los casos. La reconstrucción protésica secundaria es demandante y se asocia a complicaciones. Cabe esperar que, cuanto más grande sea el defecto óseo y mayor la cantidad de procedimientos previos, los resultados funcionales sean peores. Nivel de Evidencia: IV

Objective: to report the results of patients with an infectious elbow process, treated in 2 surgical stages: the first with an antibiotic cement spacer (ACE) and the second with a total elbow arthroplasty. Material and methods: the inclusion criteria, the diagnosis of infection and the 2 surgical stages are described. Results: 10 patients were included (7 men and 3 women), average age: 62 years old. Initial causes: degenerative in 2 cases and traumatic in 8. 4 alloprostheses and 2 latissimus dorsi flaps were performed.Follow-up was 5 years. Flexo-extension was 117°/29° in preoperative and 130°/29° in postoperative; pain according to EVA: 6.5 and 2.5; MEPS: 40 and 80; DASH 56 and 30 respectively. The extension force was M5 (4 cases), M4 (2), M3 (1), M1 (2) and M0 (1). One patient presented a necrosis of the flap that evolved with infection. In 9 of the 10 cases the patients were free of infection at the end of the follow-up. Two groups of patients were identified: Group A (bone defects less than 4 cm) and B (more than 4 cm). Group A patients had fewer previous surgeries and better functional outcomes. Conclusion: the treatment of an infectious elbow process through the placement of antibiotic cement spacer, allows a control of the infection in a high percentage of cases. Secondary prosthetic reconstruction is demanding and associated with complications. It is to be expected that the greater the bone defect and the greater the number of previous procedures, result in the worse the functional results. Level of Evidence: IV

Fracturas de húmero distal en pacientes mayores de 65 años: ¿cuál es la mejor opción terapéutica? / Distal humerus fractures in patients over 65 years: what is the best therapeutic option? / Fraturas do úmero distal em pacientes maiores de 65 anos: qual é a melhor opção terapêutica?

Introducción: Las fracturas del húmero distal corresponden al 2% de todas las fracturas. Son los pacientes más añosos, los que presentan mayor desafío terapéutico. Suelen presentarse con huesos osteoporóticos, lo que conlleva a producir fracturas con mayor conminución articular y metafisaria; así como también dificultar una fijación estable y rígida de las mismas, que permita una movilidad precoz. Estas características generan controversia a la hora de elegir el tratamiento adecuado. El objetivo de este estudio es revisar la bibliografía de la última década, acerca de cuál es la mejor opción terapéutica para las fracturas de húmero distal en pacientes añosos. Materiales y métodos: Se realizó una búsqueda sistematizada a través de los buscadores electrónicos PubMed y Timbó en agosto 2019. La búsqueda llego a un total de 475 artículos, de los cuales se seleccionaron 24 según criterios de inclusión y exclusión. Discusión: La mayoría de los estudios analizados son estudios de serie de casos retrospectivos. En los trabajos revisados, existen fracturas tanto extra como intra-articulares. Se analizaron los resultados de los distintos tratamientos realizados según parámetros clínicos, scores funcionales y complicaciones. Conclusiones: El tratamiento conservador es una opción válida para aquellos pacientes en los que el terreno no permita una intervención quirúrgica. Para las fracturas tipo extra-articulares y parcialmente articulares, la reducción abierta y fijación interna es el tratamiento de elección. Para las fracturas articulares completas, no hay diferencias significativas en cuanto a scores utilizados entre la reducción abierta y fijación interna con la artroplastia de codo. Faltan estudios prospectivos que comparen ambos tratamientos.

Introduction: Distal humerus fractures account for 2% of all fractures. It is the elderly patients who present the greatest therapeutic challenge. Osteoporotic bones, more common in this population, lead to the production of fractures with greater joint and metaphyseal comminution. As a result, stable and rigid fixation becomes more difficult, hindering early mobility. These characteristics generate controversy when choosing the appropriate treatment. The aim of this study is to review the literature of the last decade regarding the best therapeutic option for distal humerus fractures in elderly patients. Methods: A systematized search was performed through the electronic search engines PubMed and Timbó in august 2019. The search reached a total of 475 articles, of which 24 were selected according to inclusion and exclusion criteria. Discussion: Most of the studies analyzed are retrospective case series studies. In the articles reviewed, there are both extra and intra-articular fractures. The results of the different treatments performed were analyzed according to clinical parameters, functional scores and complications. Conclusions: Conservative treatment is a valid option for those patients where the terrain does not allow surgical intervention. For extra-articular and partial-articular fractures, open reduction and internal fixation is the treatment of choice. For complete articular fractures, there are no significant differences in scores used between open reduction and internal fixation and elbow replacement. There is a lack of prospective studies comparing both treatments.

Introdução: Fraturas do úmero distal correspondem a 2% de todas as fraturas. São os pacientes mais idosos os que apresentam maior desafio terapêutico. Geralmente apresentam-se com ossos osteoporóticos, o que implica produzir fraturas com maior cominuição articular e metafisária; assim como também dificultar uma fixação estável e rígida das mesmas, que permita uma mobilidade precoce. Estas características geram controvérsia na escolha do tratamento adequado. O objetivo deste estudo é rever a bibliografia da última década, sobre qual é a melhor opção terapêutica para fraturas de úmero distal em pacientes idosos. Materiais e métodos: Foi realizada uma pesquisa sistematizada através dos buscadores eletrônicos Pubmed e Timbó em agosto 2019. A pesquisa chegou a um total de 475 artigos, dos quais 24 foram selecionados segundo critérios de inclusão e exclusão. Discussão: A maioria dos estudos analisados são estudos de série de casos retrospectivos. Nos trabalhos revisados, existem fraturas tanto extra como intra-articulares. Foram analisados os resultados dos diferentes tratamentos realizados segundo parâmetros clínicos, scores funcionais e complicações. Conclusões: O tratamento conservador é uma opção válida para os pacientes em que o terreno não permita uma intervenção cirúrgica. Para fraturas tipo extra-articulares e parcialmente articulares, a redução aberta e fixação interna é o tratamento de escolha. Para fracturas articulares completas, não há diferenças significativas em termos de scores utilizados entre a redução aberta e a fixação interna com artroplastia do cotovelo. Faltam estudos prospectivos que comparem os dois tratamentos.

Artroplastía total de codo en un paciente adulto mayor como opción terapéutica para el manejo de seudoartrosis en fractura de húmero distal / Total elbow arthroplasty in an older adult patient, as a therapeutic option for the management of pseudoarthrosis in distal humerus fracture

Resumen: Introducción: Las fracturas de húmero distal en el adulto mayor constituyen un desafío terapéutico para ortopedistas, debido a las condiciones fisiológicas y los cambios óseos propios de esta edad. Reporte de caso: Se presenta el caso de una mujer de 80 años con osteopenia, quien sufrió una caída de su propia altura con fractura de húmero distal derecho, inicialmente se le dio manejo conservador, pero debido al desarrollo de seudoartrosis, se decidió hacer una artroplastía total de codo, con buenos resultados funcionales en el seguimiento postoperatorio a cuatro años. Discusión: En las fracturas de húmero distal, el manejo no quirúrgico es una opción en pacientes con baja demanda funcional o que tengan un mal estado general, y si no es el caso o fracasa el manejo conservador, deben ser llevados a artroplastía total de codo, ya que ésta proporciona una rápida recuperación del paciente en comparación con la reducción abierta y el manejo con material de osteosíntesis.

Abstract: Introduction: Distal humeral fractures in the elderly patient are a therapeutic challenge for orthopaedists, because of age's characteristic physiological conditions and bone changes. Case report: We present the case of an 80-year-old woman with osteopenia, who had distal humeral fracture due to a fall from her own height; she was initially treated conservatively, but by the reason of a non-union, we decided to perform a total elbow arthroplasty, achieving a positive functional result in the four years of postoperative follow-up. Discussion: Nonsurgical management is an option for treat humeral fractures in patients with low functional demands or in poor general condition. If the patient does not present the conditions above, or if nonsurgical management fails, a total elbow arthroplasty must be performed, because this method provides a rapid recovering if compared to an open reduction and osteosynthesis material management.

A artroplastia total do cotovelo provoca déficit proprioceptivo / Total Elbow Arthroplasty Causes Proprioceptive Deficits

A artroplastia total é necessária no tratamento de casos graves de fraturas, artrite reumatoide e osteoartrose do cotovelo. Durante o procedimento, a cápsula articular é parcialmente ressecada, levando à perda de mecanorreceptores que seriam importantes para a percepção do movimento passivo em condições normais. Acreditamos que o desenvolvimento de um equipamento capaz de realizar a medição da cinestesia, através do limiar de percepção do movimento passivo (LPMP), ajudará a esclarecer o quanto este procedimento impacta negativamente a propriocepção, e se esse efeito repercute na esfera clínica. O Propriomaq II foi criado nesse contexto, permitindo a mobilização passiva da articulação e o acionamento de um botão pelos sujeitos examinados ao perceberem o movimento, viabilizando o cálculo do seu limiar de percepção. Vinte e um pacientes hígidos foram submetidos ao teste, repetindo as medidas após ao menos um dia, visando validar o método. Com o objetivo de esclarecer o efeito da artroplastia total sobre o LPMP do cotovelo, oito pacientes portadores de prótese total foram submetidos ao exame, comparando o lado operado ao contralateral. Os resultados demonstraram latência significativamente maior para a percepção do movimento passivo nos cotovelos operados, ou seja, pior propriocepção quando comparados ao lado contralateral. Não foi encontrado, entretanto, correlação significativa entre o LPMP e os resultados funcionais no lado artroplastia. O Propriomaq II apresentou boa reprodutibilidade (R2=0,94) na medição do LPMP do cotovelo, e evidenciou conclusivamente o prejuízo proprioceptivo presente em cotovelos submetidos a artroplastia total. Esses resultados demonstram a necessidade de maior preservação das partes moles periarticulares durante a artroplastia total do cotovelo, e uma ênfase da reabilitação fisioterapêutica visando recuperação da propriocepção

Total elbow arthroplasty is necessary in the treatment of severe fractures, rheumatoid arthritis and degenerative elbow arthritis. During the procedure, the articular capsule is partially resected, leading to loss of mechanoreceptors that would be important for the perception of articular motion in normal conditions. We believe that the creation of an equipment capable of assessing kinesthesia through the measurement of threshold to detection of passive motion (TDPM) will help quantify the negative effects this procedure has on elbow proprioception, and understand if this has any relevant impact in the clinical sphere. The Propriomaq II was created in this context, allowing passive mobilization of the elbow joint and the activation of a button by the examined subjects when motion is perceived, thus providing a means of calculating it's detection threshold. Twenty-one healthy patients were subjected to the test, repeating the measurements after at least one day, so the method could be validated. In order to clarify the effects of total arthroplasty on elbow TDPM, eight patients were subjected to the test, comparing the total elbow side to the contralateral side. The results revealed significantly higher thresholds to detection of motion, or worse proprioception, on the prosthesis side in comparison to the contralateral side. These results held no correlation, however, to the clinical outcome of the elbow replacement. The Propriomaq II proved reproducible (R2=0,94) in the measurement of elbow TDPM and has conclusively exposed the proprioceptive deficits present in total arthroplasty elbows. These results demonstrate the need for greater preservation of peri-articular soft tissues during total elbow arthroplasty, and an emphasis of rehabilitation on the recovery of proprioception

Artroplastía total de codo para el tratamiento de fracturas de húmero distal en pacientes mayores de 65 años / Total elbow arthroplasty for distal humerus fractures in patients older than 65 years old

Objetivo: Comunicar los resultados clínico-radiológicos del tratamiento de las fracturas de húmero distal con prótesis total de codo en pacientes >65 años. Materiales y Métodos: Estudio retrospectivo en dos centros quirúrgicos. Criterios de inclusión: pacientes con fractura de húmero distal, >65 años, operados con prótesis total de Coonrad-Morrey y seguimiento >1 año. Se incluyeron 21 pacientes (20 mujeres), edad promedio: 79 años. Según la clasificación AO, 13 C3, siete C2 y una A2. Todos fueron operados sin desinserción del aparato extensor. Seguimiento promedio: 40 meses. Resultados: La flexo-extensión fue de 123-17°, arco de movilidad de 106° (80% con respecto al lado sano). Dolor según la escala analógica visual: 1 punto. El puntaje de la Clínica Mayo promedio fue 83: resultado excelente (8 pacientes), bueno (11 pacientes), regular (1 caso) y malo (1 caso). El puntaje DASH promedio fue de 24. No hubo aflojamientos en 13 pacientes. Se produjeron nueve complicaciones: dos pacientes fueron operados nuevamente por desgaste del polietileno, uno operado otra vez al mes de la cirugía para la recolocación del perno de ensamble, dos parestesias del nervio cubital, una falsa vía intraoperatoria, un hematoma de la herida que necesitó de un colgajo braquial y dos aflojamientos protésicos. Conclusiones: El tratamiento de las fracturas de húmero distal con prótesis total de codo en pacientes >65 años puede ofrecer una opción terapéutica razonable, pero las indicaciones deben limitarse a fracturas complejas donde la fijación interna puede ser precaria, en pacientes con osteoporosis y con baja demanda funcional.

Objective: To report the clinical-functional results of humeral distal fracture treatment with total elbow prosthesis in patients older than 65 years. Methods: Retrospective study performed in two surgical centers. Inclusion criteria: patients with humeral distal fractures, >65 years, operated on with Coonrad-Morrey prostheses, and with a follow-up >1 year. Twenty-one patients were included (20 women) with an average age of 79 years. According to AO classification: 13 type C3 fractures, 7 C2 and 1 A2. All patients were operated on without disinsertion of the extensor mechanism. Average follow-up: 40 months. Results: Flexion-extension: 123-17°, with a total arc of mobility of 106° (80% of the contralateral side). Pain according to visual analogue scale was 1. The Mayo Clinic score was 83 points, results were excellent (8 patients), good (11 patients), regular (one case) and bad (one case). Average DASH score was 24 points. No loosening of the implants was evidenced in 13 patients. Nine complications were reported: 2 reoperations for polyethylene wear, one early decoupling of the prosthesis, 2 ulnar nerve paresthesia, one patient presented a false intraoperative via, one hematoma that needed a local flap and 2 loosening of the prosthesis. Conclusions: Treatment of humeral distal fractures with total elbow arthroplasty in patients older than 65 years may be a good therapeutic option, but indications must be limited to patients with complex fractures, bad bone quality, with osteoporosis and low functional demands.

Review and selection of the approach of total elbow arthroplasty / 中国骨伤

Total elbow arthroplasty was initially used to manage the rheumatoid arthritis of elbow. With the developement of technology in recent decades, the indication of total elbow arthroplasty include the trauma associated unstable joint, traumatic arthritis and distal humerus fractures in elderly. But the high risk of complications, which includes infection, ulnar nerve deficit and tricep insufficiency, is still an unsolved issue. The most widely used approach nowadays is the Bryan-Morrey approach, while some authors also report triceps on approach recently. This article is an overview in approaches and biomechanical researches of total elbow arthroplasy by reviewing the domestic and overseas involved literatures.

Prótesis de cúpula monopolar en el tratamiento de fracturas y luxofracturas del radio / Monopolar radial head arthroplasty in the treatment of fracture and fracture-dislocation of the radius

Objetivo: Evaluar retrospectivamente los resultados clínicos y radiológicos de una serie consecutiva de pacientes con fracturas y luxofracturas de la cúpula radial a quienes se les realizó el reemplazo por una prótesis monopolar. Materiales y Métodos: Se incluyeron 20 pacientes. Criterios de inclusión: <18 años, con fracturas o luxofracturas de la cúpula radial, tratados con prótesis monoblock de titanio y seguimiento mínimo de un año. Quince eran mujeres, edad promedio 59 años. Siete eran fracturas aisladas y 13, luxofracturas. Se evaluaron el grado de aflojamiento protésico, la erosión capitelar, el ensanchamiento del espacio articular humeral lateral y las calcificaciones heterotópicas. El seguimiento fue de 26 meses. Resultados: La flexo-extensión fue de 139º-5º y la pronosupinación, de 79-79°. El arco total fue de 134°. Fuerza de puño: 84% del lado contralateral. El dolor según la escala analógica visual fue de 2, DASH: 11 puntos, 13 resultados excelentes y 6 buenos. Se detectó aflojamiento del implante (12 casos), aumento de la radiolucidez capitelar (4 casos) y ensanchamiento del espacio ulnohumeral lateral (2 casos). Hubo 2 complicaciones: una neurodocitis cubital que debió ser operada y una extracción de implante por aflojamiento y dolor. Conclusiones: El reemplazo de la cúpula radial en lesiones no reconstruibles es una opción terapéutica viable, con buenos resultados funcionales a corto y mediano plazo. La recuperación de la estabilidad articular fue posible en todos los casos y el índice de aflojamiento protésico asintomático fue elevado.

Objective: To retrospectively evaluate the clinical and radiological results of a consecutive series of patients with fracture and fracture-dislocations of the radius, treated with a monopolar radial head arthroplasty. Methods: Twenty patients were included. Inclusion criteria: <18 years old, with fracture and fracture-dislocations of the radius, treated with a titanium monopolar radial head arthroplasty and a minimun follow-up of one year. Fifteen were female, average age of 59 years old. Seven were isolated radial head fractures and 13 were fracturedislocations. Loosening of the implant, capitelar erosion, overstuffing and heterotopic ossification were evaluated. Average follow-up was 26 months. Results: Flexo-extension was 139°-5° and prono-supination 79°-79°. Total arc of motion was 134°. Grip strength was 84% of the contralateral side. Pain according to a visual analogue scale was 2, DASH: 11 points. Thirteen patients had excellent results and 6 good. Loosening of the implant (12 patients), capitelar erosion (4 patients) and overstuffing (2 patients) were detected. One patient had an ulnar neuropathy and he was operated on and one patient required implant removal due to loosening and pain. Conclusions: The replacement of the radial head in a non-reconstructable fracture is a feasible treatment option, with good functional results in a short and medium term. Joint stability was restored in all cases and the index of asymptomatic implant loosening was elevated.

Metallic modular radial head prostheses for Mason III and IV unreconstructable radial head fractures / 中国骨伤

<p><b>OBJECTIVE</b>To assess the early efficacy of metallic modular radial head prostheses in patients with Mason III and IV unreconstructable radial head fractures.</p><p><b>METHODS</b>The medical records of 16 patients (9 males, 7 females) with a mean age of 43 years old (31 to 57) with Mason III/IV unreconstructable radial head fractures requiring metallic modular radial head replacement between January 2009 and March 2012, were reviewed retrospectively. The functional results were assessed by range-of-movement, Mayo elbow performance score (MEPS). All patients underwent radiographic evaluation for radial head height and radiolucent lines.</p><p><b>RESULTS</b>Fourteen patients were evaluated with follow-up for 12 to 33 months with an average of 23 months. Range of movement parameters was significantly lower in the affected elbow than in the unaffected side (P < 0.01). MEPS results were excellent in 9 cases, good in 2 cases, fair in 2 cases, and poor in 1 case. According to Grewal grading, there were 4 cases of periprosthetic lucencies of the radius and 1 case had significant clinical signs of loosening.</p><p><b>CONCLUSION</b>Radial head replacement with the metallic modular prostheses yields satisfactory results regarding range of motion and function of the elbow joint in short term. The evolution of this prostheses needs to be evaluated with further studies to assess mid-term and long-term follow-up results.</p>

Evolução etária do ângulo de carregamento do cotovelo: estudo clínico-radiográfico / Evolution of the carrying angle of the elbow: a clinical and radiographic study

OBJETIVO: Avaliar clínica e radiograficamente o ângulo de carregamento do cotovelo (ACC) determinando uma curva de normalidade de acordo com faixas etárias (da infância à maturidade esquelética) e comparar as medidas clínicas e radiográficas. MÉTODOS: Avaliamos 510 indivíduos (1020 cotovelos), com idades entre 1 e 18 anos, distribuídos em grupos de 30 conforme faixas etárias, com intervalo de 1 ano. Excluímos os portadores de: fraturas do cotovelo, sequelas, malformações, doenças genéticas, afecções inflamatórias e frouxidão ligamentar. Mensuramos clinicamente o ACC bilateralmente com goniômetro, onde obtivemos duas medidas por dois examinadores onde média destas foi considerada. Realizamos radiografias ântero-posteriores dos cotovelos e aferimos os ângulos formados pelos eixos do úmero e da ulna. Todos os dados foram analisados estatisticamente pelo teste t student. RESULTADOS: Determinamos uma curva de normalidade onde observamos aumento deste parâmetro conforme a progressão da idade. Não observamos diferença significante entre as medidas clínicas e radiográficas. CONCLUSÃO: A média do ângulo de carregamento para o sexo feminino foi 12,78º ± 5,35 e para o masculino 11,20º ± 4,45. Este valor aumenta progressivamente da infância até os 16 anos quando observamos estabilização. Não houve diferença estatística significante das medidas clínicas e radiográficas.

OBJECTIVE: This paper has the purpose of evaluate the elbow carrying angle by clinic and radiographic examination in normal children and determine the range of normality according to age from childhood to skeletal maturity and also check if there is a statistically significant difference between the clinical and radiographic measurements. METHODS: We evaluated 510 persons with ages varying from 1 to 18 years distributed in groups with 30 subjects according to the age group with 1-year interval. We performed radiographic examination of the elbow and measured the angle formed by the long axis of the humerus and ulna. The data were statistically analyzed using the student t-test. RESULTS: We determined a normal curve of the study population where there was an increase of this parameter with the progression of age. No statistically significant difference between the clinical and radiographic measures. CONCLUSION: The average of the elbow carrying angle was 12,78 ± 5,35 degrees for females and 11,20 ± 4,45 degrees for males. This values increase progressively from childhood until 16 years when we notice stabilization. There was no statistical difference between the clinical and radiographic measurements.

Clinical outcomes of total elbow replacement in the treatment of complex distal humeral fractures / 中华外科杂志

<p><b>OBJECTIVE</b>To discuss the efficacy of total elbow replacement in the treatment of complex distal humeral fractures.</p><p><b>METHODS</b>From May 2005 to October 2008 12 patients were retrospectively studied who were diagnosed complex fractures of the distal humerus and treated by total elbow replacement (Coonrad-Marrey). The mean age was 60 years old, the mean follow-up time was 12 months. According to AO classification, there was 3 C2 and 9 C3. The study included: pain evaluation, range of motion, elbow stability, muscle strength, complications, Mayo elbow score, DASH score, radiological assessment of ectopic bone formation and loosening.</p><p><b>RESULTS</b>Two cases with mild pain. The mean flexion is 98.3 degrees, extension limit is 17.9 degrees, mean pronation is 82.9 degrees and supination is 70.8 degrees. All joints were stable postoperatively. All patients were satisfied with the outcome. There was 1 case of superficial soft tissue nonhealing and 2 cases of ulnar nerve symptoms. No ectopic bone formation or loosening was found. Mayo elbow score was 3 cases of excellent and 9 cases of good. The mean DASH score was 41.3.</p><p><b>CONCLUSION</b>Total elbow replacement can be used in such conditions as severe osteoporosis, severe comminution that internal plates can not get stable fixation, severe cartilage damage (because of fracture or inflammatory arthritis) that indicate traumatic or inflammatory arthritis.</p>

Complications and Revision Rate as the Type of Prosthesis of Total Elbow Replacement: Long-term Follow-up in Korea / 대한정형외과학회잡지

PURPOSE: Few studies have compared the outcomes, complications and revision rate of a total elbow replacement (TER) prosthetic design. This study examined a series of patients with semiconstrained and unconstrained total elbow replacements (TER) and evaluated them for any functional differences, complications and revision rates that might be attributable to the prosthetic design. MATERIALS AND METHODS: A total 78 cases of primary TER was performed in 71 patients. Their mean age at TER was 54 years. The causes of TER were rheumatoid arthritis in 42, post-traumatic arthritis and osteoarthritis 24 and 5 patients, respectively. Unconstrained and semiconstrained TER was employed in 35 and 43 cases, respectively. The end results of TER by the Mayo elbow performance score (MEPS), their elbow range of motion before and after surgery, their complications and revision rates after an average 13 year follow-up were evaluated. RESULTS: The MEPS was improved from 33 points pre-operatively to 87 points post-operatively (p<0.001). Active flexion-extension elbow motions were also improved markedly from 27degrees-86degrees pre-operatively to 16degrees-128degrees postoperatively (p<0.001). There was no significant difference between the semiconstrained and unconstrained TER in the post-operative MEPS (p=0.764) and range of motion (p=0.728). The complication rate was much higher in the unconstrained groups than in the semiconstrained group (p=0.014). The mean total revision rate was 29.5%. There was no significant difference in revision rate between the unconstrained and semiconstrained groups (p=0.402). Loosening was found in a total of 12 cases (15.4%). There was also no significant difference in loosening between the semiconstrained and unconstrained groups (p=0.382). CONCLUSION: Favorable results of MEPS and elbow motion were obtained in both the unconstrained and semiconstrained types after an average 13 year follow up after TER. However, the semiconstrained type of TER showed a lower complication rate than the unconstrained type of TER.

Periprosthetic Fractures after Total Elbow Replacement

PURPOSE: To analyze clinical presentation and results of the treatment of periprosthetic fractures occurring after total elbow replacement (TER). MATERIALS AND METHODS: Eleven patients who had periprosthetic fractures after TER were examined. The locations and the causes of periprosthetic fractures were evaluated. The periprosthetic fractures were classified using Mayo classification. Stable fractures were treated conservatively, and unstable fractures were treated by open reduction and internal fixation. Revision operation was conducted if implant loosening was observed. End results after treatment were evaluated based on Mayo elbow performance score (MEPS) and radiologic examinations. RESULTS: Most fractures occurred at the humeral site(82%), and Type B2 periprosthetic fracture was most frequently observed(64%). Radiographic union was observed at a mean of 26 weeks after the treatment. No statistically significant differences were observed between preoperative and postoperative elbow active motions. According to the MEPS, the results were rated as excellent in three patients, good in five, fair in one and poor in two. CONCLUSION: A periprosthetic fracture after TER likely occurrs at humeral site and it is highly related with loosening of the implant. Although union tends to be delayed and complications occur frequently, relatively fair results can be obtained with appropriate treatment.

Revision Arthroplasty for the Aseptic Loosening after Semiconstrained Total Elbow Replacement: Midterm Results / 대한정형외과학회잡지

PURPOSE: To analyze the clinical results of revision arthroplasty for aseptic loosening after performing semiconstrained total elbow replacement. MATERIALS AND METHODS: We retrospectively analyzed fifteen patients that had undergone aseptic loosening after semiconstrained total elbow replacement who also had revision arthroplasty. There were 4 men and 11 women, with a mean age of 57 years. The average duration of follow-up was 54 months. The primary causes of arthroplasty were posttraumatic arthrosis (five cases), rheumatoid arthritis (four cases), primary osteoarthritis (four cases), ankylosis (one case) and Charcot joint (one case). For eleven (73%) elbows, the cementing technique was considered marginal or inadequate at the time of primary arthroplasty. An impaction bone graft was used in seven patients at revision, a strut allograft was used in four patients and cement alone was used in four patients. RESULTS: The average preoperative Mayo elbow performance score was 56.6 points; the average postoperative score was 84.5 points. At the latest follow-up, according to the Mayo elbow performance index, six patient elbows showed an excellent result, six patient elbows showed a good result, one patient elbow had a fair result and two patient elbows showed a poor result. Aseptic loosening occurred in three of four elbows that had been revised with cement only. CONCLUSION: Revision arthroplasty for aseptic loosening after semiconstrained total elbow replacement was useful for the relief of pain, maintenance of stability and the activities of daily living. A poor cementing technique and an inadequate selection of implant may be associated with loosening as a main risk factor. Revision using an impaction graft or strut allograft can be a reliable technique for treating a failed total elbow arthroplasty with massive bone loss.

Espaciador de cemento ortopedico como reemplazo de la cupula radial / Radial head replacement using a custom-made bone cement spacer

Introduccion: El manejo de las fracturas conminutas de la cupula del radio (Mason III) con fracturas asociadas y/o lesiones ligamentarias (Mason IV) es tema de controversias .Se describieron numerosos procedimientos quirurgicos para el tratamiento de estas lesiones. Cuando la reconstruccion de la cupula del radio no es posible está indicado su reemplazo protesico, para el cual se han utilizado diferentes materiales.En esta presentacion mostramos nuestra experiencia en el reemplazo por un espaciador de cemento ortopedico (metilmetacrilato) en casos en los que consideramos que la cupula del radio necesitaba ser reemplazada.Materiales y metodos: Presentamos a 21 pacientes operados con distintas asociaciones lesionales, lesion de Essex- Lopresti y grado IV de lesion de Monteggia. Describimos la tecnica quirurgica y la preparacion del implante. Resultados: Mostramos los resultados con la evaluacion del dolor, la movilidad, la estabilidad, las evidencias radiologicas y las complicaciones obteniendo resultados comparables con los de las series en que se utilizo protesis metalica y mejores que los logrados con las de silastic. Conclusiones: Creemos que este espaciador puede ser de utilidad en un medio como el nuestro, ya que no contamos con reserva protesica en el quirofano y su costo es el de una dosis de cemento ortopedico

Insufficiency Fracture of Olecranon after Total Elbow Replacement Arthroplasty in Rheumatoid Arthritis: Report of Three Cases / 대한정형외과학회잡지

Osteoporosis due to the rheumatoid arthritis and the glucocorticoid therapy predisposes patients to insufficiency fractures. Insufficiency fractures or periprosthetic fractures of the lower extremity in the rheumatoid arthritis have been frequently reported. But those of the upper extremity were rarely reported. We report three cases of the insufficiency fracture of the olecranon after total elbow replacement arthroplasty in patients with the rheumatoid arthritis. All the cases were successfully treated by immobilization for 3 weeks. At the last follow-up, there were no functional impairments or residual symptoms caused by the fractures.

Total Elbow Replacement / 대한정형외과학회잡지

Since 1974, we had performed five cases of total elbow replacement; four cases of Coonrad type and one case of Stanmore type. There were done In three cases of comminuted fracture and dislocation of the elbow and two cases of ankylosis of the elbow. We could obtain useful range of motion in three cases and good stability without pain in all the cases. In one case of Coonrad type total elbow, we removed the prosthesis at five years and three months later due to infection of the Joint. In another case of Coonrad type total elbow, there was transitory tourniquet palsy of the arm.