FUNCTIONAL OUTCOME FOLLOWING BI-COLUMNAR PLATING OF AO-TYPE 13C DISTAL HUMERUS FRACTURES.

Background: Intra articular fractures of the distal humerus are uncommon injuries and present the most difficult challenge among fractures of the distal end of the humerus. Objective of this study is to evaluate the functional outcome following bicolumnar plating of AO-Type 13C distal humerus fractures. A total of 20 int Materials and Methods: ra articular (AO TYPE C) distal humerus fractures were operated within a period of 2 years in KVG medical college and hospital Sullia were included in the study in which there were 12 males and 8 females.16 cases were due to RTA, 4 were due to self-fall, Out of 20 cases,1 (5%) was of AO C1 type of fracture, 16(80%) were of C2 and 3 (15%) were of C3 type of fractures. All the patients were operated with pre-countered distal humerus locking plates in orthogonal fashion and functional outcome was measured by Mayo's Elbow Performance Score (MEPS). In our series of 20 cases, the Results: average duration of the radiological union was 16±02 weeks. Excellent results were seen in 10, good in 6 and fair in 3, and poor in 1 According to Mayo's Elbow Performance Score (MEPS) at the end of 12 months follow up. Open reduct Conclusion: ion and internal fixation with bicolumnar plating is the ideal fixation for AO 13 type C distal humerus fractures. Use of locking plates, stable fixation, along with early elbow mobilization influence the final functional outcome. Bicolumnar plating provides better stability, allows early elbow range of motion and prevents elbow stiffness.

Olecranon osteotomy approach for Dubberley type Ⅲ coronal fractures of the distal humerus / 中国骨伤

OBJECTIVE@#To retrospectively analyze the clinical efficacy of olecranon osteotomy approach in the treatment of Dubberley type Ⅲ coronal fractures of the distal humerus and summarize the treatment experience.@*METHODS@#From January 2016 to June 2020, 17 patients (5 males and 12 females) with Dubberley type Ⅲ coronal fractures of the distal humerus were treated by olecranon osteotomy approach. The age ranged from 37 to78 years old with an average of (58.5±12.9) years old. According to Dubberley classification, there were 5 cases of type Ⅲ A and 12 cases of type Ⅲ B. The curative effect was evaluated using the Borberg-Morrey elbow function score. The flexion, extension and rotation range of motion of the elbow joint, complications and postoperative imaging evaluation were recorded.@*RESULTS@#All the 17 patients got bony union. The follow-up time ranged from 12 to 33 months with an average of (15.6±5.6) months. There was 1 case of ischemic necrosis of capitulum humeri, 2 cases of traumatic arthritis and 1 case of heterotopic ossification, 1 case of malunion of fracture. The range of motion was (114.80±19.50) °. The Broberg-Morrey score was 85.3±8.2, excellent in 5 cases, good in 9 cases, fair in 3 cases and poor in 0 case.@*CONCLUSION@#Through olecranon osteotomy approach, the articular surface of distal humerus could be fully exposed, and the operation is convenient. Anatomical reduction and rigid fixation of the articular surface of distal humerus are the key factors for the succesful outcome.

Bilateral triceps tendon approach is flexible and efficient in the treatment of type C distal humerus fractures / 中华创伤杂志(英文版)

PURPOSE@#The purpose of this study was to assess and compare elbow range of motion, triceps extension strength and functional results of type C (AO/OTA) distal humerus fractures treated with bilateral triceps tendon (BTT) approach and olecranon osteotomy (OO). At the same time, we are also trying to know whether BTT approach can provide sufficient vision for comminuted intra-articular fractures of the distal humerus, and whether it is convenient to convert to the treatment to total elbow arthroplasty (TEA) or OO.@*METHODS@#Patients treated with OO and BTT approaches for type C distal humerus fractures between July 2014 and December 2017 were retrospectively reviewed. Inclusion criteria include: (1) patients' age were more than 18 years old, (2) follow-up was no less than 6 months, and (3) patients were diagnosed with type C fractures (based on the AO/OTA classification). Exclusion criteria include: (1) open fractures (Gustillo type 2 or type 3), (2) treated by other approaches, and (3) presented with combined injuries of ipsilateral upper extremities, such as ulnar nerve. Elbow range of motion and triceps extension strength testing were completely valuated, when the fractures had healed. Assessment of functional results using the Mayo elbow performance score and complications were conducted in final follow-up. The data were compared using the two tailed Student's t-test. All data were presented as mean ± standard deviation.@*RESULTS@#Eighty-six patients of type C distal humerus fractures, treated by OO and BTT approach were retrospectively reviewed between July 2014 and December 2017. Fifty-five distal humerus fractures (23 males and 32 females, mean age 52.7 years) treated by BTT approach or OO were included in this study. There were 10 fractures of type C1, 16 type C2 and 29 type C3 according to the AO/OTA classification. Patients were divided into two surgical approach groups chosen by the operators: BTT group (28 patients) and OO group (27 patients). And the mean follow-up time of all patients was 15.6 months (range, 6-36 months). Three cases in BTT group were converted to TEA, and one converted to OO. Only one case in BTT group presented poor articular reduction with a step more than 2 mm. There were not significantly different in functional outcomes according to the Mayo elbow performance score, operation time and extension flexion motion are values between BTT group and OO group (p > 0.05). Complications and reoperation rate were also similar in the two groups. Triceps manual muscle testing were no significant difference in the two groups, even subdivided in elder patients (aged >60 years old).@*CONCLUSION@#BTT is a safe approach to achieve similar functional result comparing with OO. BTT were not suitable for every case with severe comminuted pattern, but it avoids the potential complications related to OO, and has no complications concerning with triceps tendon. It is convenient for open reduction internal fixation and flexible to be converted to OO, as well as available to be converted to TEA in elder patients.

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.

Outcome analysis of extraarticular distal humerus locking plate for fresh fractures of humerus shaft

Background: The complex anatomy of distal humerus with proximity of radial nerve make the exposure and fixation of these fractures difficult. The standard technique of plate osteosynthesis consider at least eight cortices hold in both distal and proximal ends. Obeying these principles becomes difficult in distal humerus fractures. These difficulties have been overcome with the use of anatomical extra-articular distal humerus plate which has more hole density in the distal part with 3.5 mm screws for greater hold in distal part.Methods: A prospective study was carried out at Institute of Medical Sciences BHU Trauma Centre for 19 cases of distal third fracture excluding open fractures of patients between 18-68 years who attended our OPD or Emergency from June 2017 to July 2019. All patients were operated with the triceps-reflecting modified posterior approach. Regular follow-up was done to evaluate elbow functionality, fracture union, secondary displacement, non-union, implant failure and any complications; Mayo Elbow Performance score (MEPS) was used for the final functional assessment.Results: Fourteen 73.6% male and 5 (26.3%) female patients with mean age 41 years constituted the study group, who had an average follow-up of 17.1 months. Preoperatively one patient had radial nerve palsy (neuropraxia) who recovered completely 3 months after surgery. Overall, 18 (94.7%) patients were adjudged to have complete radiological union within 14 weeks; Mean flexion achieved was 134±11.5 (range 90–140). Average MEPS at the latest follow-up was 94.7±7.5.Conclusions: Extra-articular fractures of distal humerus can be satisfactorily treated with the use of single anatomically pre-contoured locking compression plate with excellent elbow functional range of motion and union rates.

Distal Humeral Shear Fracture - A Modified Technique for Exposure

Coronal shear fractures of the distal humerusare rare, complex fractures that can be technically challenging even in the best of hands. Their peak incidence is seen in elderly females and is usually the result of low energy fall. The injury is usually part of complex elbow injury and in rare instances can be isolated entity. Complex injury pattern is characterized by shear fracture combined with fracture of radial head and collateral ligament injury. The preferred treatment for this complex fracture is Open reduction and internal fixation. The usual recommendation is a two-incision approach. We report a rare case in which fracture could not be classified using the traditional classification systems and in which entire fracture was managed via a single approach

Paratricepital Approach for Fixation of Distal Humerus Fractures in Adult – A Review of Thirty Cases

Background: Distal humerus fractures are most commonly managed by surgical approaches that disrupt the extensor mechanismof the elbow. Paratricepital approach for distal humerus fracture fixation has been done by orthogonal or parallel plate constructthat allows excellent healing of fracture, motion arc of elbow more than 100°, and maintains of extensor mechanism strength.Materials and Methods: Atotal of 30 cases of distal humerus fractures are fixed by paratricepital posterior approach. Bicolumnerfixation done by elevating and retracting the triceps of the distal humerus keeping triceps insertion undisturbed by orthogonalor parallel plate construct. Early active-assisted range of motion initiated within limits of pain. The age group was 15–60 years.Among them 21% was Type A fracture, 17% Type B fracture, 33% Type C1 fracture, and 29% Type C2 fracture. More than60% of cases have 1 year of follow-up. Radiograph and functional evaluation were done by mayo elbow performance score(MEPS), disability of arm, shoulder, and hand questionnaire.Results: All 30 fractures healed primarily. The median arc of elbow motion was 105° (range 70°–140°). Average MEPS was91 points (range 65–100) indicating excellent scores.Conclusion: Treatment of distal humerus fracture in adults by paratricepital posterior approach results in excellent healing, amean flexion extensor arc more than 100°, maintains of almost normal elbow extensor strength compared with the contralateralnormal elbow.

Outcome Analysis of Precontoured Locking Plate Fixation in Distal Humerus Fractures: An Institutional Based Study

Background: Fractures of the distal humerus continue topresent a significant dilemma in management despite recentadvances in surgical technique. The resulting functional deficitscan be profound, and the limited soft tissue envelopesurrounding the elbow also means these injuries are oftenopen. Hence; the present study was conducted for assessingthe outcome of Precontoured locking plate fixation in patientswith distal humerus fractures.Materials & Methods: A total of 20 patients with distalhumerus fractures were enrolled in the present study. Undergeneral anaesthesia/ brachial block /regional anaesthesia,under all aseptic conditions proper painting and draping wasdone. After completing the Precontoured locking plate fixationwound was closed in layers over negative suction drain.Movements of elbow were checked. The drain was removedafter 48 hrs. All patients were examined clinically andradiologically postoperatively. Results were assessedaccording to Mayo elbow performance index.Results: Excellent results were obtained in 70 percent of thepatients while good results were obtained in 20 percent of thepatients. Mean time for complete union was found to be 13.11weeks. Superficial infection and skin necrosis were found to bepresent in 1 patient each.Conclusion: Precontoured locking plate fixation is an excellentmethod of treating distal humerus fracture cases, therebyyielding excellent results.

Fractura compleja de codo / Complex elbow fracture

Resumen: Las fracturas de codo son secundarias a traumatismos de baja y alta energía, afectan el extremo distal del húmero, olécranon, cabeza radial o una combinación de las anteriores. Las fracturas complejas de codo dificultan la reducción y su posterior fijación, lo que representa un reto para el ortopedista. Es esencial el uso de auxiliares diagnósticos como la tomografía axial computarizada para su diagnóstico y posterior tratamiento. En la actualidad, las nuevas tendencias en la fijación de las mismas y los diversos implantes con los que se cuenta pueden mejorar el pronóstico del paciente. Se presentan dos casos clínicos de fracturas complejas de codo tratadas mediante osteosíntesis.

Abstract: Elbow fractures are secondary to low or high energy trauma affecting the distal humerus, olecranon, radial head or a combination of the above. Complex fractures of the elbow complicate the reduction and its subsequent fixation representing a real challenge for the orthopedic surgeon. It is essential the use of diagnostic aids such as computerized axial tomography for diagnosis and subsequent treatment. Currently new trends in the fixation of the same and the various implants with which it is counted, can improve improve the patient's prognosis. We present two clinical cases of complex elbow fractures treated by osteosynthesis.

Supratrochlear Foramen of Humerus and its Clinical Significance - A Morphological Study in South Indian Population

Supratrochlear foramen is formed as a result of perforation of bony septum that separates olecranon fossa and coronoid fossa at the lower end of humerus. It is more common in lower animals and primates. The incidence is increasing in different human races. Aim: To study the prevalence, shape and morphometry of supratrochlear foramen in south Indian population. Methods: 156 Adult dry humeri (84 left and 72 right) irrespective of sex were studied in Department of Anatomy, Government Coimbatore medical college, Coimbatore. Presence of supratrochlear foramen was studied on the basis of its shape, size and dimensions. Also their distance from the epicondyles and lower trochlear margin were noted. Results: Out of total 156 bones studied STF was present in 43 humeri (27.5%) more common in left humeri (30.9%). Most common shape reported was oval shape in 21 humeri (48.8%). The mean transverse diameters on right and left side were 9.5 mm and 9.18 mm; while mean vertical diameters on right and left side were 6.7 mm and 6.9 mm. The mean diameter for round foramen was 4.5 and 6 mm for right and left sides respectively. The distance from the STF to medial epicondyle, lateral epicondyle and lower trochlear margin were measured and the values were tabulated. Conclusion: The knowledge of STF is important for the anatomists, orthopedicians, surgeons, radiologists and anthropologists. It is helpful for the orthopaedicians in preplanning for intramedullary nailing in supracondylar fracture of humerus.

Paratricipital Approach for AO/OTA Type C2 Intra-Articular Fracture of Distal Humerus

PURPOSE: The aim of this study was to determine the outcomes of fixation of AO/OTA type C2 fractures among intra-articular fractures of the distal humerus using the paratricipital approach (side to side retraction of the triceps). MATERIALS AND METHODS: From June 2008 to January 2018, 12 patients underwent an open reduction and internal fixation with the paratricipital approach and were followed-up for more than 10 months after surgery. According to the AO/OTA classification, type C2 fractures were chosen among the intraarticular distal humerus fractures. An extended posterior incision was used over the olecranon in the prone position, preserving the insertion site of the triceps brachii muscle. The fracture site was exposed by retracting the muscle side-to side through a dissection of the medial and lateral intermuscular septum of the triceps brachii muscle. The therapeutic results were assessed by the anatomical reduction of the articular surface and integrity of the metaphyseal contour in postoperative simple radiographs, complications, such as neuropathy or non-union, and the Mayo elbow performance score (MEPS) were checked to estimate the functional outcome. RESULTS: In the postoperative simple radiographs, no case showed more than 1 mm step-off and the disrupted contour of the distal humerus was recovered to normal alignment in most cases. The range of elbow joint motion in the last follow-up was 133.8° on average with a mean flexion contracture of 5.0°. The clinical results depending on the MEPS were excellent, except for two cases, which were good. Neuropathy of the ulnar nerve was observed in one patient, which was resolved after metal removal. CONCLUSION: The paratricipital approach is useful technique in AO/OTA type C2 intra-articular distal humerus fractures that provides sufficient exposure of the surgical field, without injury to the triceps brachii muscle and postoperative complications associated with the trans-olecranon approach.

Treatment of distal humerus fracture with unexposed ulnar nerve medial elbow incision and anatomical locking compression plate / 中国修复重建外科杂志

Objective: To investigate the feasibility and effectiveness of unexposed ulnar nerve medial elbow incision, open reduction and internal fixation of anatomical locking compression plate (LCP) for distal humerus fractures. Methods: Fourteen patients with distal humerus fracture were treated between January 2014 and June 2017. There were 5 males and 9 females, aged 18-85 years (mean, 65.5 years). The causes of injury included falling from height in 12 cases and traffic accident in 2 cases, all were closed fractures. Fractures were classified according to the AO/Association for the Study of Internal Fixation (AO/ASIF): 3 cases of type A2, 2 cases of type A3, 4 cases of type B2, 2 cases of type C1, 2 cases of type C2, and 1 case of type C3; without ulnar nerve damage. The time from injury to operation was 4-15 days, with an average of 7 days. The type B2 fractures were treated with unexposed ulnar nerve elbow medial incision and anatomic LCP internal fixation, the rest patients were all treated with unexposed ulnar nerve medial plus conventional lateral approach and bilateral LCP internal fixation. Results: The operation time was 50-140 minutes (mean, 80 minutes), and the intraoperative blood loss was 20-200 mL (mean, 70 mL). There was no blood vessels or nerve damage during operation. All incisions healed by first intension, and no incision infection occurred. All the 14 cases were followed up 9-24 months (mean, 13 months). X-ray films showed that all fractures healed within 4 months without complications such as nonunion and osteomyelitis. No ulnar nerve injury, cubitus varus deformity, and ossifying myositis occurred during follow-up. At last follow-up, the elbow function was assessed by Mayo Elbow Performance score (MEPS), the results were excellent in 8 cases, good in 4 cases, fair in 1 case, and poor in 1 case (type C3 fracture), with the excellent and good rate of 85.7%. Conclusion: The unexposed ulnar nerve medial elbow incision can be used effectively to reduct the fracture, and it is not prone to ulnar nerve injury. Combined with the lateral approach to treat the distal humerus fracture, which has the advantages of short operation time, few trauma, little bleeding, and reliable effectiveness.

Effectiveness of total elbow arthroplasty with preservation of triceps brachii insertion approach / 中国修复重建外科杂志

Objective: To investigate the effectiveness of total elbow arthroplasty (TEA) with preservation of triceps brachii insertion approach. Methods: Between January 2012 and September 2017, 17 patients with elbow disease were treated with TEA with preservation of triceps brachii insertion approach. There were 3 males and 14 females, with an average age of 65.2 years (range, 48-85 years). The injuries located on left elbow in 5 cases and on right elbow in 12 cases. There were 11 cases of distal humerus fracture (AO type C1 in 2 cases and type C3 in 9 cases); the interval between fracture and operation was 3-10 days (mean, 4.1 days). There were 3 cases of osteoarthritis and 3 cases of rheumatoid arthritis, with the disease duration of 2-26 years (mean, 8.7 years). The postoperative elbow function and pain was assessed by Mayo elbow performance score (MEPS) and visual analogue scale (VAS) score, respectively. The prosthesis position, heterotopic ossification, and periprosthetic fracture were observed by X-ray films. Results: All incisions healed by first intention. Sixteen patients were followed up 18-69 months (mean, 40.6 months). Intraoperative ulnar nerve injury occurred in 2 cases, and healed after symptomatic treatment. At last follow-up, the MEPS score was 55-100 (mean, 90.3). The results were excellent in 11 cases, good in 2 cases, fair in 2 cases, and poor in 1 case, with an excellent and good rate of 81.3%. The VAS score was 0-2 (mean, 0.4). X-ray reexamination showed that no polyethylene wear, prosthesis loosening and fracture, abnormal prosthesis position, periprosthetic fracture occurred during the follow-up period, and the prosthesis survival rate was 100%. Heterotopic ossification occurred in 2 and 3 months after operation in 2 cases, respectively. Conclusion: The triceps on approach for TEA are satisfactory for distal humerus fracture, osteoarthritis, and rheumatoid arthritis.

Fractures of Distal Humerus Operated with Using Lambda Plate

Background: The goal of this study to determine functional outcome of open reduction and internal fixation with Lambda plate for intra/extra articular distal humerus fractures. Methods: 35 patients of communited intra-articular fractures distal humerus were operated. Out of 35, 23 (65%) were male, 12 (35%) were female, mean age of 38 year (range 17-67 years). According to classification proposed by Rise borough and Radin based on radiographic analysis, out of 35, 11 (31%) were type 2, 20(57%) were type 3 and rest of the patients were type 4 fractures. All fractures fixed with Lambda plate, inter- condylar fracture fix with malleolar screw or k-wire or both after trans olecranon osteotomy. Results: Mean follow-up of 11 months (range 6-15 months). Out of 35 patients 29 patients have complete radio-logical union within 4 months. None of the fracture go into non-union. Mean active elbow flexion was 1300 (range 900-1400) and active extension 150 (range 0-300), mean elbow flexion range exceeds 100 degree in 28 patients (80%), was between 600 and 1000 in 6(17%) and was less than 600 in one patient. Mean Mayo Elbow Performance Score (MEPS) was 96 points (range 40-100). There were 30 excellent result (MEPS) 90-100 points, 2 good (75-89) 2 moderate result. Conclusion: Fracture of distal humerus fix with Lambda plate, malleolar screw after trans- olecranon osteotomy gave excellent results in term of fixation, stability and recovery of elbow functions.

Quiste óseo aneurismático en el húmero distal. Reporte de un caso y tratamiento actual / Aneurysmal bone cyst in distal humerus. Case report and current treatment

El quiste óseo aneurismático es una lesión ósea benigna que se presenta a edad temprana; su comportamiento suele ser agresivo por lo cual, la resección quirúrgica y la prevención de su recidiva son los pilares fundamentales de el tratamiento. Presentamos el caso de una paciente de 6 años de edad residente en Gualaceo, Ecuador, con masa de crecimiento progresivo y deformante en el codo izquierdo. Por las características de los exámenes de imagen y el cuadro sintomático se dignostica quiste óseo aneurismático que fue tratado con cirugía de resección intralesional y terapia adyuvante (fresado de alta velocidad, coagulación térmica y crioterapia). Se confirmó el diagnostico mediante el estudio histopatológico posquirúrgico

The aneurysmal bone cyst is a benign osseous lesion of presentation at an early age whose behavior is usually aggressive, so its surgical resection and the prevention of its recurrence is the fundamental pillar for the treatment. We present the case of a girl of 6 years of age living in Gualaceo, Ecuador, with a mass of progressive and deforming growth in the left elbow. By characteristics in the imaging tests and clinical picture it was considered as an aneurysmal bone cyst which was treated with intralesional resection surgery and adjuvant therapy (high speed burr, thermal coagulation and cryotherapy). The diagnosis was confirmed with postoperative histopathological study

Surgical exposures of the distal humeral fractures: An anatomical study of the anterior, posterior, medial and lateral approaches / 中华创伤杂志(英文版)

PURPOSE@#Exposure of the articular surface is the key to the successful treatment of intra-articular fractures of distal humerus. Anterior, posterior olecranon osteotomy as well as medial and lateral approaches are the four main approaches to the elbow. The aim of this study was to compare the exposure of distal articular surfaces of these surgical approaches.@*METHODS@#Twelve cadavers were used in this study. Each approach was performed on six elbows according to previously published procedures. After completion of each approach, the exposed articular surfaces were marked by inserting 0.5 mm K-wires along the margins. The elbow was then disarticulated and the exposed articular surfaces were painted. The distal humeral articular surfaces were then closely wrapped using a piece of fibre-glass screen net with meshes. The exposed articular surfaces and the total articular surfaces were calculated by counting the number of meshes, respectively.@*RESULTS@#The average percentages of the exposed articular surfaces for the anterior, posterior olecranon osteotomy, medial and lateral approaches were 45.7% ± 2.0%, 53.9% ± 7.1%, 20.6% ± 4.9% and 28.5% ± 6.3%, respectively.@*CONCLUSION@#The anterior and posterior approaches provide greater exposures of distal humeral articular surface than the medial and lateral ones in the treatment of distal humeral fractures.

A case control study of perpendicular or parallel double plate for the treatment of young and middle-aged patients with type C fractures of distal humerus / 中国骨伤

<p><b>OBJECTIVE</b>To compare clinical outcomes of perpendicular or parallel double plate in treating type C fractures of distal humerus in adults.</p><p><b>METHODS</b>From March 2009 and March 2013, 40 adult patients with type C distal humerus fractures were treated. The patients were divided into two groups according to fixed form. In perpendicular group(group A), there were 13 males and 9 females with a mean age of (37.56±9.24) years old(ranged 18 to 56);while in parallel plating group(group B), including 11 males and 7 females, with a mean age of (41.35±9.03) year old(ranged 20 to 53). All fractures were fresh and closed without blood vessels or nerve damaged. Incision length, operating time, blood loss, hospital stay, preoperative and postoperative radiological change, range of activity of elbow joint, Mayo score, flexor and extensor elbow strength, and postoperative complications were observed and compared.</p><p><b>RESULTS</b>All incisions were healed well. One patient occurred myositis ossificans between two groups. Two patients in group A and 1 patient in group B occurred elbow joint stiffness. All fractures were obtained bone union. Group A were followed up from 20 to 36 months with an average of (25.2±7.1) months, while group B were followed up from 18 to 35 months with an average of(24.3±6.0) months. There were significant differences in blood loss and operative time, while there was no obvious meaning in incision length, hospital stay, muscle strength, fracture healing time, range of activity of elbow joint. Mayo score of group A was 82.27±10.43, 6 cases obtained excellent results, 12 good, 3 moderate and 1 poor;in group B was 81.94±12.02, 5 cases obtained excellent results, 9 good, 3 moderate and 1 poor;and there were no statistical significance between two groups.</p><p><b>CONCLUSIONS</b>There was no significant differences in clinical effects between perpendicular and parallel double plate for adult patients with type C distal humerus fractures, while the operation should choose according to facture and proficiency of operator.</p>

Ulnar Nerve Injury Caused by the Incomplete Insertion of a Screw Head after Internal Fixation with Dual Locking Plates in AO/OTA Type C2 Distal Humerus Fractures

After dual plating with a locking compression plate for comminuted intraarticular fractures of the distal humerus, the incidence of ulnar nerve injury after surgery has been reported to be up to 38%. This can be reduced by an anterior transposition of the ulnar nerve but some surgeons believe that extensive handling of the nerve with transposition can increase the risk of an ulnar nerve dysfunction. This paper reports ulnar nerve injuries caused by the incomplete insertion of a screw head in dual plating without an anterior ulnar nerve transposition for AO/OTA type C2 distal humerus fractures. When an anatomical locking plate is applied to a distal humeral fracture, locking screws around the ulnar nerve should be inserted fully without protrusion of the screw because an incompletely inserted screw can cause irritation or injury to the ulnar nerve because the screw head in the locking system usually has a slightly sharp edge because screw head has threads. If the change in insertion angle and resulting protruded head of the screw are unavoidable for firm fixation of fracture, the anterior transposition of the ulnar nerve is recommended over a soft tissue shield.

Posterior Dual Plating for Distal Shaft Fractures of the Humerus

PURPOSE: To evaluate the results and efficacy of posterior dual plating for distal shaft fractures of the humerus. MATERIALS AND METHODS: We retrospectively analyzed 12 patients, who underwent open reduction and internal fixation using posterior dual plating for distal shaft fractures of the humerus, between July 2007 and July 2015, with at least 6 months of follow-up. After locating the radial nerve without dissection via posterior triceps splitting, the fracture was stabilized using a short 3.5 mm locking compression plate. Then additional fixation, using a long 3.5 mm locking compression plate, was performed. The clinical outcomes were assessed in accordance with the Mayo Elbow Performance Index (MEPI) scoring system, and the radiological outcomes were assessed using serial plain radiographs. RESULTS: Eleven patients (91.7%) had bony union, and the mean union period was 13.9 weeks. In one patient, delayed union was treated by autogenous iliac bone graft at 8 months after surgery, which resulted in bony union. The mean MEPI score was 95.8, and the clinical outcomes were excellent in 9 patients and good in 3 patients. Postoperative complications included 1 elbow stiffness by heterotopic ossification and 1 temporary radial nerve palsy. One patient with temporary radial nerve palsy was completely recovered within the first 4 days after surgery. CONCLUSION: Posterior dual plating for distal shaft fractures of the humerus revealed satisfactory clinical and radiological outcomes. It can be a useful alternative to provide stable fixation without the need for a dissection of the radial nerve.

Ulnar Nerve Injury Caused by the Incomplete Insertion of a Screw Head after Internal Fixation with Dual Locking Plates in AO/OTA Type C2 Distal Humerus Fractures

After dual plating with a locking compression plate for comminuted intraarticular fractures of the distal humerus, the incidence of ulnar nerve injury after surgery has been reported to be up to 38%. This can be reduced by an anterior transposition of the ulnar nerve but some surgeons believe that extensive handling of the nerve with transposition can increase the risk of an ulnar nerve dysfunction. This paper reports ulnar nerve injuries caused by the incomplete insertion of a screw head in dual plating without an anterior ulnar nerve transposition for AO/OTA type C2 distal humerus fractures. When an anatomical locking plate is applied to a distal humeral fracture, locking screws around the ulnar nerve should be inserted fully without protrusion of the screw because an incompletely inserted screw can cause irritation or injury to the ulnar nerve because the screw head in the locking system usually has a slightly sharp edge because screw head has threads. If the change in insertion angle and resulting protruded head of the screw are unavoidable for firm fixation of fracture, the anterior transposition of the ulnar nerve is recommended over a soft tissue shield.