Complications in repairing acute closed Achilles tendon rupture with micro-incision percutaneous Achilles tendon suture system / 中国骨伤

OBJECTIVE@#To analyze the causes, management and prevention of complications after micro-incision percutaneous repair of acute Achilles tendon rupture.@*METHODS@#A retrospective study indentyfied 279 patients with acute Achilles tendon rupture who underwent a mini-invasive procedure using the micro-incision percutaneous Achilles tendon suture system(MIPAS) from August 2008 to November 2019, including 269 males and 10 female;96 cases on the right side and 183 cases on the left side;aged from 18 to 64 years old with an average of (36.9±11.4 )years old. Surgery was performed 0.5 to 7 days with an average of(2.7±0.9 )days after injury. The incision-related complications, re-rupture, sural nerve injury, deep vein thrombosis, Achilles tendon adhesion, local pain, and ankle stiffness within 18 months after surgery were recorded, as well as the corresponding management and outcome, the causes and prevention measures were analyzed.@*RESULTS@#No superficial or deep infection was found in all patients, symptomatic Achilles tendon adhesion and ankle stiffness were not observed, delayed suture foreign-body reactions occurred in 2 cases (0.7%), re-rupture in 5 cases (1.8%), sural nerve injury in 3 cases (1.1%), 21 cases(7.5%) with skin invagination at puncture site, 2 cases (0.7%) with symptomatic vein thrombosis, and 45 cases (16.1%) of transient posterior medial malleolus pain. After individualized treatment, the function was good. American Orthopeadic Foot & Ankle Sciety(AOFAS) score was 93 to 100 with an average of(98.9±5.4) scores.@*CONCLUSION@#Despite the occurrence of unique complications with MIPAS, it shows low functionally-related complications rates, such as incision-related complications, re-rupture, sural nerve injury, deep vein thrombosis and ankle stiffness.

Ecografía para prevenir lesiones del nervio sural en la reparación del tendón de Aquiles. Estudio cadavérico / Ultrasound to prevent sural nerve injury in Achilles tendon repair. A cadaveric study

Introducción: Las técnicas mínimamente invasivas son las preferidas para tratar las roturas agudas del tendón de Aquiles. Representan una opción para evitar las complicaciones tegumentarias, y la lesión del nervio sural es uno de sus principales problemas. El objetivo de este estudio fue comprobar la utilidad de la ecografía para prevenir la lesión del nervio sural durante la reparación del tendón de Aquiles con técnicas percutáneas. materiales y métodos: Estudio en 12 piezas cadavéricas. Se recreó una lesión en el tendón de Aquiles 5 cm proximales de su inserción distal. En uno de los miembros del cadáver, se identificó el nervio sural o su vena satélite mediante ecografía. Se reparó el nervio sural por vía percutánea con dos agujas proximales y dos agujas distales a la lesión, y se representó el recorrido del nervio sural. En el miembro contralateral, no se identificó el nervio sural mediante ecografía. Se efectuó la reparación percutánea de las lesiones mediante la técnica de Ma y Griffith. Resultados: En el grupo ecográfico, no se identificaron lesiones del nervio sural. En el grupo de control, se observaron dos lesiones del nervio sural (p = 0,6). En todos los casos, la identificación del nervio sural mediante ecografía fue correcta. Conclusión: La asistencia ecográfica en el tratamiento percutáneo de las lesiones del tendón de Aquiles es un método eficaz y confiable para evitar las lesiones del nervio sural. Nivel de Evidencia: III

Introduction: Minimally invasive techniques are preferred to treat acute Achilles tendon ruptures. They represent an option to avoid integumentary complications, and sural nerve injury is one of its main problems. This study aims to verify the usefulness of ultrasound in preventing sural nerve injury during Achilles repair with percutaneous techniques. materials and methods: Study in 12 cadaveric pieces. We recreated an injury at the level of the Achilles tendon, 5 cm proximally to its distal insertion. In one of the cadaver limbs, the sural nerve and/or its satellite vein were identified by ultrasonography. We repaired the sural nerve percutaneously with two needles at the proximal level and two needles at the distal level of the lesion and represented the path of the sural nerve. In the contralateral limb, the sural nerve was not identified by ultrasound. We performed the percutaneous repair of the injuries using the Ma & Griffith technique. Results: In the ultrasound group, no sural nerve injuries were identified. In the control group, two sural nerve injuries were observed (p=0.6). In all cases, the identification of the sural nerve by ultrasound was correct. Conclusion: Ultrasound assistance in the percutaneous treatment of Achilles tendon injuries is an effective and reliable method to prevent sural nerve injuries. Level of Evidence: III

Oxidative Stress and Abnormal Tendon Sonographic Features in Elite Soccer Players (A Pilot Study) / Estresse oxidativo e características ultrassonográficas do tendão anormal em jogadores de futebol de elite (um estudo piloto)

Abstract Objective Sound experimental data suggest that oxidative stress plays an important role in the pathogenesis of tendinopathies. However, this hypothesis in humans remains speculative given that clinical data are lacking to confirm it. Recently, a new methodology has allowed to quantify the oxidative stress in vivo by measuring the concentration of hydroperoxides of organic compounds, which have been utilized as an oxidative stressrelated marker in several pathologic and physiologic conditions. Given the reliability of this test and the lack of information in subjects with tendinopathies, the aim of the present study was to assess the oxidative stress status in elite professional soccer players with and without ultrasonographic features of tendon damage. Methods In 73 elite players, blood metabolic parameters were evaluated and oxidative stress was measured by means of a specific test (expressed as U-Carr units). Therefore, an ultrasonographic evaluation of the Achilles and patellar tendons was performed. Results No significant relationships were observed between metabolic parameters and oxidative stress biomarkers. The Achilles and patellar tendons showed a normal echographic pattern in 58 athletes, and sonographic abnormalities in 15. The athletes with ultrasonographic alterations, compared to those with normal US picture, showed significantly higher U-Carr levels (p = 0.000), body mass index (BMI) values (p = 0.03) and were older (p = 0.005). The difference in U-Carr values among the subjects remained significant also after adjustment for age and BMI. Conclusion The results of the present study support the hypothesis that oxidative substances, also increasedat systemicand notonlyat local level, mayfavor tendon damage. Level of Evidence IV (pilot study).

Resumo Objetivo Dados experimentais ultrassonográficos sugerem que o estresse oxidativo desempenha um papel importante na patogênese das tendinopatias. No entanto, essa hipótese permanece especulativa em humanos, dado que faltam dados clínicos para comprová-la. Recentemente, uma nova metodologia permitiu quantificar o estresse oxidativo in vivo medindo a concentração de hidroperóxidos de compostos orgânicos, que tem sido utilizada como um marcador relacionado ao estresse oxidativo em várias condições patológicas e fisiológicas. Dada a confiabilidade desse teste e a falta de informação em sujeitos com tendinopatias, o objetivo do presente estudo foi avaliar o status de estresse oxidativo em jogadores profissionais de elite com e sem características ultrassonográficas de dano tendinoso. Métodos Em 73 jogadores de elite foram avaliados parâmetros metabólicos e o estresse oxidativo foi medido por meio de um teste específico (expresso como unidades U-Carr). Por isso, foi realizada uma avaliação ultrassonográfica dos tendões de Aquiles e patelar. Resultados Não foram observadas relações significativas entre parâmetros metabólicos e biomarcadores de estresse oxidativo. Os tendões de Aquiles e patelar mostraram um padrão ecográfico normal em 58 atletas, e anormalidades ultrassonográficas em 15. Os atletas com alterações, em comparação com aqueles com quadro normal, apresentaram níveis significativamente mais elevados de U-Carr (p = 0,000), índice de massa corporal (IMC) (p = 0,03) e eram mais velhos (p = 0,005). A diferença nos valores de U-Carr entre os sujeitos permaneceu significativa também após ajuste por idade e IMC. Conclusão Os resultados deste estudo corroboram a hipótese de que as substâncias oxidativas, também aumentadas a nível sistêmico e não apenas a nível local, podem favorecer danos no tendão. Nível de Evidência IV (estudo piloto).

Ruptura crónica del tendón de Aquiles reconstruida con el tendón peroneo corto / Chronic Rupture of the Achilles tendon Reconstruction with the Peroneus Brevis Tendon

RESUMEN Introducción: La ruptura espontánea del tendón de Aquiles es una afección frecuente en los pacientes jóvenes que practican deportes. Cuando no se realiza el diagnóstico inicial, pasa a ser una lesión crónica, donde su diagnóstico y tratamiento es aún más complejo. En la mayoría de estos casos son necesarios los injertos tendinosos. Objetivo: Demostrar la eficacia y resultados clínicos funcionales de la reparación quirúrgica de la ruptura crónica del tendón de Aquiles mediante transferencia del tendón peroneo lateral corto. Presentación del caso: Paciente masculino de 38 años de edad con antecedentes de una caída mientras practicaba deportes. Se constató ruptura crónica del tendón de Aquiles. Se realizó una cirugía a cielo abierto, con transferencia tendinosa del tendón peroneo lateral corto hacia el cabo distal del tendón de Aquiles. Se reforzó la plastia con el tendón del plantar delgado. Se colocó una inmovilización tipo bota para el tobillo con 30o de flexión plantar por seis semanas. Pasado este tiempo, se colocó una bota de marcha y comenzó la deambulación, así como la rehabilitación con apoyo parcial hasta cumplir tres meses. A los seis meses se incorporó a su vida normal con adecuada función del pie y el tobillo. Conclusiones: La reparación quirúrgica de la ruptura crónica del tendón de Aquiles mediante transferencia del tendón peroneo lateral corto constituye un método eficaz y ofrece buenos resultados clínicos y funcionales(AU)

ABSTRACT Introduction: Spontaneous rupture of the Achilles tendon is a frequent condition in young patients who practice sports. When the initial diagnosis is not made, it becomes a chronic injury, consequently, diagnosis and treatment is even more complex. In most of these cases, tendon grafts are necessary. Objective: To demonstrate the efficacy and functional clinical results of the surgical repair of the chronic rupture of the Achilles tendon by transferring the short lateral peroneal tendon. Case report: We report the case of a 38-year-old male patient with a history of a fall while playing sports. A chronic rupture of the Achilles tendon was found. Open surgery was performed, the short lateral peroneal tendon was transferred to the distal end of the Achilles tendon. The plasty was reinforced with the thin plantar tendon. Ankle boot-type immobilization was placed with 30° plantar flexion for six weeks. After this time, the patient received a walker boot, ambulation and rehabilitation began. The latter started with partial support during three months. At six months this patient returned to his normal life with adequate foot and ankle function. Conclusions: Surgical repair of chronic Achilles tendon rupture by transferring the short lateral peroneal tendon is an effective method and offers good clinical and functional results(AU)

Local treatment with ascorbic acid accelerates recovery of post-sutured Achilles tendon in male Wistar rats

Tendon rupture is a very frequent accident involving average people and high-performance athletes. Clinical studies describe tendon recovery as a painful and slow process involving different biochemical and histological events. Ascorbic acid (AA) is a potent antioxidant as well as an important cofactor for collagen synthesis. In the current study, we evaluated if local treatment with AA is able to promote tendon repair in tenotomized rats. Animals were submitted to Achilles tendon rupture followed by surgical suture. Control and AA groups received in loco injection of saline solution (0.9% NaCl) and 30 mM AA, respectively. Histological and functional recovery of Achilles tendon tissue was evaluated at 7, 14, and 21 days post-surgery. Hematoxylin/eosin staining and collagen fluorescence analysis showed intense disarrangement of tendon tissue in the saline group. Tenotomized animals also showed hypercellularity in tendon tissue compared with non-tenotomized animals. The Achilles functional index (AFI) showed a significant decrease of tendon functionality in tenotomized animals at 7, 14, and 21 days post-surgery. AA accelerated tissue organization and the recovery of function of the Achilles tendons. The beneficial effect of AA treatment was also observed in the organization of the collagen network. Data presented in the current work showed that in loco treatment with AA accelerated the recovery of injured Achilles tendon post-surgery.

Retalho sural reverso de pedículo fasciossubcutâneo: relato de caso / Reverse sural flap of the fasciosubcutaneous pedicle: a case report

Introdução: As perdas de substância no terço inferior da perna costumam exigir elaboradas estratégias cirúrgicas para sua reconstrução. Dentre as opções existentes, o uso do retalho sural reverso de pedículo fasciossubcutâneo ou adipofascial reverso, citado na literatura como interessante alternativa, é pouco relatado, se comparado às outras técnicas mais utilizadas. O objetivo deste estudo é apresentar o resultado do tratamento de uma lesão exposta do tendão de Aquiles, realizado com retalho sural reverso de pedículo fasciossubcutâneo, associado à enxertia de pele total no mesmo tempo cirúrgico, discutindo as alternativas técnicas e as vantagens do procedimento. Relato de caso: A.D., 28 anos, portador de lesão complexa em terço distal da perna, decorrente de evolução desfavorável de procedimento ortopédico de reconstrução do tendão de Aquiles rompido em acidente automobilístico, ocorrido há mais de 30 dias, foi submetido à reconstrução da ferida por meio do retalho sural reverso de pedículo fasciossubcutâneo. A evolução pós-operatória foi favorável, não havendo complicações ou intercorrências. Conclusão: A técnica relatada apresentou uma boa opção com resultado satisfatório para a cobertura de lesão de terço inferior da perna com exposição do tendão de Aquiles.

Introduction: Loss of substance in the lower third of the leg usually requires complex surgical procedures for tissue reconstruction. Among the existing options for tissue reconstruction, reverse sural flap of the fasciosubcutaneous pedicle or reverse adipofascial flap, described in the literature as a viable option, has been little studied compared with other techniques. The objectives of this study were to present the results of surgical treatment of a complex injury due to Achilles tendon rupture using the reverse sural flap of the fasciosubcutaneous pedicle concomitantly with total skin grafting and to discuss the advantages of the procedure as well as other surgical alternatives. Case report: A.D., a 28-year-old male patient, presented with a complex injury in the lower third of the leg because of a poor outcome of surgical repair of Achilles tendon rupture that had occurred during an automobile accident more than 30 days previously. The patient underwent injury reconstruction with the reverse sural flap of the fasciosubcutaneous pedicle. The postoperative result was favorable, without complications. Conclusion: The surgical technique described here is satisfactory for treating lesions in the lower third of the leg due to Achilles tendon rupture.

Roturas del tendón de Aquiles operadas con técnica percutánea: resultados quirúrgicos y complicaciones posoperatorias / Achilles tendon ruptures operated on with percutaneous technique: Surgical results and post-operative complication

Las roturas del tendón de Aquiles han aumentado considerablemente en los últimos años. El tratamiento de estas lesiones puede ser conservador o quirúrgico. Pese a la vasta literatura, no existe un "patrón de referencia" para el tratamiento de estas lesiones. Las opciones quirúrgicas incluyen la cirugía abierta, mini-invasiva y técnica percutánea. El objetivo de este estudio fue caracterizar la presentación clínica y mostrar los resultados quirúrgicos y las complicaciones en pacientes con rotura del tendón de Aquiles tratados con técnica percutánea. Materiales y Métodos: Se realizó un estudio descriptivo retrospectivo. Se incluyeron pacientes adultos y se obtuvieron datos clínicos y epidemiológicos. Todos fueron operados con técnica percutánea con raquetas de Dresden. Resultados: Se incluyó a 60 pacientes. Todos tenían dolor y el 92% presentaba también signo de Thompson y brecha palpable. A 7 pacientes (12%) se les solicitaron imágenes complementarias. El tiempo promedio hasta la cirugía fue de 4.28 días. Siete pacientes sufrieron complicaciones posoperatorias menores. Conclusiones: Las roturas del tendón de Aquiles son una patología prevalente en la población activa de mayor edad y en deportistas de fin de semana. El diagnóstico es clínico; sin embargo, algunos pacientes pueden requerir imágenes complementarias para el diagnóstico. La evidencia nos demuestra que el tratamiento quirúrgico es superior al tratamiento conservador clásico. En comparación con la técnica abierta, la técnica percutánea logra mejores resultados estéticos y menos complicaciones. Nivel de Evidencia: IV

Introduction: Achilles tendon ruptures have increased considerably in recent years. Treatment of these lesions can be either conservative or surgical. Despite extensive literature, no gold standard exists. Surgical options include open surgery, mini-open surgery and percutaneous technique. The objective of this study was to characterize the clinical presentation and to report surgical results and complications in patients with ruptured Achilles tendon treated surgically with percutaneous technique. Methods: A retrospective descriptive study was carried out. Adult patients were included, and clinical and epidemiological data were obtained. All patients were operated on with percutaneous technique using the Dresden Instrument. Results: Sixty patients were enrolled. All presented pain, and 92% had also associated Thompson's sign and palpable gap. Complementary images were requested in 7 patients (12%). Average time until surgery was 4.28 days. Seven patients presented minor post-operative complications. Conclusions: Achilles tendon ruptures are a prevalent pathology in older active population and weekend athletes. Diagnosis is mostly clinical; however, some patients may require complementary images for diagnosis. Strong evidence in the literature suggests that surgical treatment is superior to the classic conservative treatment. In comparison with open surgery, percutaneous technique has shown better aesthetic results and fewer complications. Level of Evidence: IV

Roturas agudas del tendón de Aquiles tratadas con técnica mínimamente invasiva de Dresden / Acute Achilles tendon ruptures treated with minimally invasive Dresden technique

Introducción: Las roturas del tendón de Aquiles son lesiones traumáticas frecuentes. El tratamiento generalmente es quirúrgico. La cirugía puede ser abierta o percutánea. El objetivo de este estudio es evaluar los resultados clínico-funcionales en pacientes con roturas agudas del tendón de Aquiles tratados por técnica mínimamente invasiva de Dresden. Materiales y Métodos: Estudio prospectivo comparativo de 15 casos con roturas agudas del tendón de Aquiles. Se analizaron características del intraoperatorio, la hospitalización, los resultados funcionales y la evaluación de acuerdo con el puntaje de la AOFAS. El seguimiento promedio fue de 18 meses. Resultados: Se mencionan los resultados sobre la base del tiempo quirúrgico, la estadía hospitalaria, el tiempo hasta la cirugía, la carga del peso y el protocolo posoperatorio. El puntaje de la AOFAS a los 5 meses fue 94,66. El retorno a la actividad laboral fue, en promedio, a los 3.53 meses y el retorno a la actividad deportiva, a los 6.53 meses. Conclusiones: La técnica percutánea para la reparación de roturas agudas del tendón de Aquiles es una buena opción, los pacientes tienen una buena evolución y el índice de complicaciones es bajo. Nivel de Evidencia: IV

Introduction: The Achilles tendon ruptures are common traumatic injuries. Treatment is usually surgical. Surgery may be open or percutaneous. The aim of this study is to evaluate the clinical and functional outcomes in patients with acute Achilles ruptures treated by minimally invasive Dresden technique. Methods: Prospective study of 15 patients with acute Achilles tendon ruptures. Intraoperative characteristics, hospitalization, functional outcomes and evaluation according to AOFAS score were evaluated. The average follow-up was 18 months. Results: Results are listed based on the surgical time, hospital stay, time to surgery, weight load and postoperative protocol. The AOFAS score at five months was 94.66 points. Patients returned to work at 3.53 months on average and to their sport activities at 6.53 months Conclusions: The percutaneous technique for the repair of acute Achilles tendon rupture is a good choice. Patients have a good outcome and the rate of complications is low. Level of Evidence: IV

Amniotic membrane as an option for treatment of acute Achilles tendon injury in rats

Abstract Purpose: To evaluate the effect of human amniotic membrane (hAM) fragment on inflammatory response, proliferation of fibroblast and organization of collagen fibers in injured tendon. Methods: Sixty rats were divided into 3 groups: C - surgical procedures without tendon lesion and with simulation of hAM application; I - surgical procedures, tendon injury and simulation of hAM application; T - surgical procedures, tendon injury and hAM application. These groups were subdivided into four experimental times (3, 7, 14 and 28 days). The samples underwent histological analysis and ATR-FTIR spectroscopy. Results: Histological analysis at 14 days, the T group showed collagen fibers with better alignment. At 28 days, the I group presented the characteristics described for the T group at 14 days, while this group presented aspects of a mature connective tissue. FT-IR analysis showed a clear distinction among the three groups at all experimental times and groups T and I presented more similarities to each other than to group C. Conclusion: Acute injury of tendon treated with human amniotic membrane fragment showed a faster healing process, reduction in inflammatory response, intense proliferation of fibroblasts and organization of collagen fibers.

Tratamiento conservador de rotura crónica de tendón de Aquiles: reporte de caso / Case report: conservative treatment of a chronic rupture of Achilles tendon

Resumen: Presentamos el caso clínico de una paciente de 64 años con rotura de tendón de Aquiles izquierdo y dos meses de evolución que ha pasado desapercibida. Con la aplicación de un tratamiento conservador se consiguió una funcionalidad completa y simétrica a cinco meses de la lesión.

Abstract: We report a case of a 64 years-old-female patient with ruptured left Achilles tendon within two months of evolution that has gone unnoticed. By the application of a conservative treatment recovered complete and symmetrical functionality in five months time after the injury.

Common calcaneal tendon repair with glycerin-preserved carotid artery xenografts and autologous bone marrow mononuclear cells in rabbits / Reparo de tendão calcanear comum de coelhos com xenoimplante de artéria carótida preservada em glicerina associado a células mononucleares da medula óssea autólogas

Fifteen adult rabbits were used to evaluate the repair of experimental common calcaneal tendon defects treated with glycerin-preserved canine carotid artery xenografts alone or associated with autologous mononuclear bone marrow cells (AMCs). Rabbits were submitted to daily clinical examination; implanted sites were analyzed under light microscopy within 15, 30 and 60 days of surgery. Pelvic limbs receiving xenografts associated with AMCs had better physical performance as well as higher collagen fiber, fibroblast, lymphocyte and new vessel counts at all postoperative time points considered. Glycerin-preserved canine carotid artery xenografts associated with AMCs constituted an effective method for common calcaneal tendon repair in rabbits.(AU)

Utilizou-se 15 coelhos adultos para avaliar o reparo de lesão do tendão calcanear comum com implante de artéria carótida de cães, preservada em glicerina, associado ou não a células mononucleares autólogas da medula óssea (CMAs). Os animais foram observados diariamente por meio de avaliações clínicas e o local do implante foi analisado sob microscopia de luz decorridos 15, 30 e 60 dias de pós-operatório. Notou-se em todos os períodos de observação, com o implante associado às CMAs, melhor desempenho físico dos membros pélvico e maior intensidade de fibras colágenas, fibroblastos e linfócitos e neovascularização. A utilização de xenoimplante de artéria carótida de cães preservada em glicerina associado à administração de células mononucleares da medula óssea foi eficiente no reparo do tendão calcanear comum de coelhos.(AU)

effect of butyric acid with autogenous omental graft on healing of experimental achilles tendon injury in rabbits

In this study, the role of local injection of butyric acid [BA] with autogenous omental graft was evaluated in healing of experimental Achilles tendon injury in rabbits. Nine adult male New Zealand rabbits were anesthetized and a partial thickness tenotomy was created on both hindlimbs. In treated group, omental graft was secured in place using BA soaked polygalactin 910 suture. In control group, the graft was sutured without BA. Butyric acid and normal saline were injected daily to treatment and control groups for three days, respectively. Based on the findings, on day 15 after injury, the tendon sections showed that healing rate in BA treated group was higher than that in control group. Furthermore, at days 28 and 45, comparison between BA treated and control groups demonstrated that BA increased the healing rate but with no significance. In summary, results of this study show that application of BA with autogenous omental graft can improve healing process of damaged Achilles tendon

Ruptura espontánea del Tendón de Aquiles en paciente joven sin antecedentes patológicos / Spontaneous achilles tendon rupture in a young healthy individual

La ruptura del tendón de Aquiles representa el 20% de todas las lesiones de tendones largos del cuerpo humano. La lesión espontánea es rara y se relaciona con el uso crónico de corticoides y fluorquinolonas, insuficiencia renal crónica y enfermedades del colágeno. La dorsiflexión forzada con el pie en plantiflexión es el mecanismo más frecuente, siendo el resultado de una fuerza de contracción excéntrica de los gastrosóleos combinada con las fuerzas de reacción al piso. Consideramos de importancia el reporte de este caso por ser un paciente de 22 años de edad con ruptura espontánea y estudios histopatológicos, que contrasta con lo reportado en la literatura...

Achilles tendon ruptures account for 20% of all large tendon ruptures. A spontaneous lesion is unusual and is secondary to long term corticosteroid therapy and usage of fluoroquinolones, chronic renal failure and collagen deficiencies. The most common mechanism of injury includes excessive dorsiflexion of a plantar-flexed foot resulting from an eccentric load of the gastrosoleus muscles combined with ground-reaction forces. Our case report is of interest because it is a 22-year-old male patient who presented a spontaneous rupture and histopathology studies which contrast with those described in the literature...

Use of the semitendinosus tendon for foot and ankle tendon reconstructions

Objective: To demonstrate the results obtained from foot and ankle tendon reconstructions using the tendon of the semitendinosus muscle. The clinical results, the patient's degree of satisfaction and complications in the graft donor and recipient areas were evaluated. Methods: This was a retrospective study in which the medical files of 38 patients who underwent this surgical procedure between 2006 and 2010 were surveyed. The functional results from this technique, the complications in the donor and recipient areas and the patients' degree of satisfaction were evaluated. Results: Three patients presented complications in the recipient area (skin necrosis); one patient showed complications in the donor area (pain and insensitivity); and all patients had satisfactory functional results, with complete range of motion. Conclusion: The semitendinosus muscle is a good option for treatments for foot and ankle tendon injuries...

Objetivo: Demonstrar os resultados obtidos nas reconstruções tendíneas do pé e do tornozelo com o uso do tendão do músculo semitendíneo. Foram avaliados os resultados clínicos, o grau de satisfação do paciente e as complicações da área doadora e receptora do enxerto. Métodos: Estudo retrospectivo em que foram levantados os prontuários de 38 pacientes submetidos a esse procedimento cirúrgico entre 2006 e 2010 e avaliados os resultados funcionais dessa técnica, as complicações das áreas doadora e receptora e o grau de satisfação dos pacientes. Resultados: Três apresentaram compliçates da área receptora (necrose de pele), um complicação da área doadora (dor e insensibilidade) e todos tiveram resultados funcionais satisfatórios com arco de movimento completo. Conclusão: O músculo semitendinoso é uma boa opção de tratamento para lesões tendinosas do pé e tornozelo...

Experimental model of Achilles tendon injury in rats

PURPOSE: To describe an effective experimental model to study the Achilles tendon healing. METHODS: Forty male Rattus norvegicus albinus, Wistar lineage adult male weighing 250 to 300g were used for this experiment and thirty were surgically submitted to bilateral partial transverse section of the Achilles tendon. The right tendon was treated with radio waves (RF) whereas the left tendon served as control. On the third postoperative day, the rats were divided into four experimental groups consisting of ten rats each which were treated with monopolar RF adjusted to 650 kHz and 2w, for two minutes twice a week and a group of normal animals without any intervention, until they were sacrificed on the 7th, 14th and 28th days, respectively. Tendons were weighed and collagen quantification was evaluated by hydroxyprolin content. RESULTS: Significant reduction in collagen content on day 7, 14 and 28 was related to control experiment to normal tendon (7 days, p<0.01; 14 e 28 days, p<0.05). CONCLUSION: The experimental model has been effective and available to be used to study Achilles tendon healing. .

Plastía del tendón de Aquiles en lesiones inveteradas: Técnica modificada de Pérez Teuffer / Achilles tendon plasty in inveterate lesions: Pérez Teuffer modified technique

El propósito del presente trabajo es transmitir la experiencia que se tuvo con la técnica utilizada en lesiones crónicas de tendón de Aquiles en el Hospital Regional "1º de Octubre" del ISSSTE. Se realizó un estudio prospectivo con seguimiento longitudinal descriptivo de 30 pacientes con ruptura de tendón de Aquiles con más de 10 días de evolución tratados con una técnica modificada de Pérez Teuffer realizada en el Servicio de Ortopedia y Traumatología de Marzo de 2004 a Marzo de 2008. Se efectuó una plastía con transposición de peroneo lateral corto a muñón de tendón. El lado derecho fue el más afectado en 70%; el promedio de edad fue 31.1 años; predominó el sexo masculino con 90%. El tiempo de evolución fue de 10 días a 62, con una media de 26 días. Obtuvimos resultados excelentes en 90%. Con 10% de buenos resultados; un caso presentó necrosis de piel y limitación para la movilidad y dos más con dolor. No se consideraron como malos por no interferir con los resultados funcionales finales.

The purpose of this paper is to convey our experience with the technique used to treat chronic Achilles tendon lesions at ISSSTE "1º de Octubre" Regional Hospital. A prospective study with descriptive longitudinal follow-up was conducted in 30 patients with Achilles tendon rupture that occurred more than 10 days earlier. They were treated with the modified Pérez-Teuffer technique at the Orthopedics and Trauma Service from March 2004 to March 2008. Plasty with transposition of the lateral peroneus brevis to the tendon stump was performed. The right side was affected in 70% of patients, mean age was 31.1 years, and males were predominant and accounted for 90%. Time elapsed since the lesion was 10-62 days with a mean of 26 days. We obtained excellent results in 90%, and good results in 10% of patients. One case had skin necrosis and limited mobility and two had pain. They were not considered as poor results as this did not interfere with the final functional results.

Ecografía del tendón de Aquiles: de la imagen a la patología / Achilles tendon ultrasound: from image to the pathology

El tendón de Aquiles o calcáneo constituye la extensión tendinosa en la pantorrilla del gemelo, soleo y plantar delgado con inserción distal en la tuberosidad del calcáneo siendo el tendón más grueso y fuerte de todo el organismo. La ecografía contribuye a discernir el tipo de lesiones de los tendones, lo que permite establecer el tratamiento más adecuado. Tiene cuatro funciones principales: confirmar la existencia real de la lesión tendinosa, precisar la ubicación exacta de la misma, determinar la gravedad de la lesión y evaluar su carácter "activo" o de secuela. En este artículo trataremos de definir los aspectos ecográficos normales del tendón de Aquiles y sus lesiones más frecuentes: rupturas completas e incompletas, tendinitis, tendinosis y bursitis

Comparação do ultrassom pulsado e contínuo no reparo tendíneo de ratos / Comparison of pulsed and continuous ultrasound on tendon repair in rats

No tratamento de lesões tendíneas, o uso do ultrassom surge como possibilidade terapêutica, apesar de lacunas sobre seus efeitos clínicos. O objetivo foi avaliar dois protocolos de ultrassom terapêutico sobre dor e edema após trauma tendíneo. Vinte e um ratos Wistar foram submetidos a trauma no tendão calcâneo e divididos em três grupos: sham (GS); ultrassom contínuo (GUC); e ultrassom pulsado (GUP). O trauma ocorreu sobre a face lateral do tendão calcâneo direito, com energia de 0,40 J. A dor foi avaliada pelo teste de incapacidade funcional e o edema, pelo diâmetro laterolateral. Foram realizadas avaliações previamente à lesão; após 1 hora da indução da lesão; após o 1º tratamento; 2, 8 e 24 horas após lesão; e após o 5º dia. O tratamento ocorreu em 5 dias, com transdutor de 1 MHz, durante 3 minutos, sobre o local do trauma, com dose de 0,4 W/cm2 SATA. Os resultados da incapacidade funcional para GS mostraram aumento da nocicepção. Para GUC houve aumento ao comparar a avaliação 1 (AV1) com as avaliações 2 (AV2), 3 (AV3) e 4 (AV4); ao comparar AV2 com as avaliações 5 (AV5) e 6 (AV6) houve diminuição de valores. Para GUP houve aumento ao comparar AV1 com AV2 e AV3, mas ao comparar AV2 com as seguintes, houve diminuição significativa a partir de AV4. Para o edema, os grupos tratados produziram aumento inicial, com redução nas últimas avaliações. O ultrassom terapêutico produziu diminuição de dor e edema, mais precocemente para a forma pulsada.

In tendon injuries treatment, the use of ultrasound appears as a therapeutic option, despite the lack of their clinical effects. The aim was to evaluate two therapeutic ultrasound protocols, continuous or pulsed, on the pain and swelling after tendinous trauma. Twenty-one Wistar rats were subjected to traumatic injury in the tendon and divided in three groups: sham (GS), continuous ultrasound (GUC), and pulsed ultrasound (GUP). The injury occurred on right Achilles tendon lateral aspect, with energy of 0.40 J. The pain was assessed by the functional disability test and edema by latero-lateral diameter. The evaluations were performed before the injury; after 1 hour of the lesion induction; after the 1st treatment; 2, 8 and 24 hours after injury; and after the 5th day. The treatment was made for 5 consecutive days, with transductor of 1 MHz, for 3 minutes on the trauma site, with a dose of 0.4 W/cm2 SATA. The results of functional disability for GS showed increased nociception. For GUC, there was increased when comparing evaluation 1 (EV1) with evaluations 2 (EV2), 3 (EV3) and 4 (EV4); comparing EV2 to evaluations 5 (AV5) and 6 (AV6), there was decreased values. To GUP there was increased when comparing EV1 with EV2 and EV3, but when comparing EV2 with the following, there was a significant decrease starting from EV4. Edema, treatment groups produced an initial increase with a reduction in recent evaluations. The therapeutic ultrasound produced pain and edema reduction in rats with tendon trauma, and early in the pulsed.

Alterações no tendão de Aquiles após inflamação em tecido adjacente / Alterations in the Achilles tendon after inflammation in surrounding tissue

OBJETIVO: Analisar as características de tendões de Aquiles de ratos após indução de processo inflamatório localizado na pata. MÉTODOS: Foram utilizados três grupos experimentais: grupo inflamado com carragenina na pata de rato (G1); grupo salina (G2) e grupo controle (G3). Após 4 horas os animais foram eutanaziados e o tendão de Aquiles foi removido. RESULTADOS:Não foram observadas diferenças significativas nas análises de proteínas não colagênicas, glicosaminoglicanos e hidroxiprolina, mas uma tendência a diminuição foi verificada em G1. Em organização de moléculas de colágeno não foram observadas diferenças entre os grupos. Com respeito à atividade de MMPs, foi observada uma presença maior da isoforma ativa da MMP-2 em G1, sugerindo que a remodelação do tecido está ocorrendo. CONCLUSÃO: Desta forma, nós concluímos que o processo inflamatório desencadeado em pata de rato pode afetar o remodelamento de tendões situados próximo ao local inflamado. Nível de Evidência I, Estudos Prognósticos - Investigação do Efeito de Característica de um Paciente Sobre o Desfecho da Doença.

OBJECTIVE: To analyze the characteristics of the Achilles tendon of rats after induction of localized inflammation in the rat paw. METHODS: In our study three groups were used: inflamed group with carrageenan in rat paw (G1); saline group (G2) and control group (G3). After 4 hours the animals were euthanized and the Achilles tendon removed. RESULTS: No significant differences were observed in the analysis of non-collagenous proteins, glycosaminoglycans and hydroxyproline in the groups but a tendency of reduction was verified in G1. About the organization of collagen molecules, no differences were observed between groups. With respect to MMPs activity, a stronger presence of the active isoform of MMP-2 in G1 was observed, suggesting that the remodeling was occurring. CONCLUSION: Thus, we conclude that the inflammatory process in rat paw may affect the remodeling of tendons located near the inflamed site. Level of Evidence I, Prognostic Studies - Investigating the Effect of a Patient Characteristic on the Outcome of Disease.