bluuebunny/crossref_metadata_2025_split huggingface dataset:
Shoulder muscle strengh in asyntomatic patients, according to age, sex and method of determination
Authors: Arcuri Francisco , Barclay Fernando , Nacul Iván 
Published: January 2015

Objective: Determine the normal value of shoulder muscle strengh, in an adult population divided in six groups between 20 to 86 years, without known shoulder pathology. Materials and Methods: 523 individuals, 1046 shoulders, had their muscle strengh evaluated in two different positions, in 90 abduction and 90º fowarf flexion in the scapular plane. Three measurements were performed and the aveage one was recorded. Patiens with known shoulder pathology, reumathoid diseases, cancer were excluded. The patients were divided in six groups according to age, from 20 to 29 (68 patients), 30 to 39 (92 patients), 40 to 49 (109 patients), 50 to 59 (103 patients), 60 to 69 (91 patients) and 70 to 90 (60 patients). The strengh eas measured in pounds. Results: Average mucle strengh was 17,64 at the scapular plane and 16,82 lb at 90ª (p<0,0001)For the right shoulder, the average muscle strengh of the second decade group was 22 lb at scapular plane and 20,73 at 90º. The third decade was 19,93 and 18,50 respectively. The fouth decade values were 20,45 and 19,58, on the fifth decade 17,83 and 17,07. On the sixth decade was 15,57 and 15,23 and for the seventh decade was 11,40 and 11 lb respectively. The values for the left shoulder were for the second decade 21,53 om the scapular plane and 20,53 at 90º. On the third decade were 19,33 and 18,17, on the fourth decade 19,62 and 18,95, on the fifth decade were 16,8 and 16,2 , on the sixth decade 15,57 and 15,23. And for the final group 11,4 and 11 lb. Significant differences were seen between both shoulders ,sex (p<0,0001), position of the arm at time of measure (p0,0001), dominace (p0,001) Conclusion: The objective measurement of the muscle strengh of the shoulder varies significantly with age, sex and position of the arm at time of measure, putting in dout the validity of the contralateral shoulder as a value to compare against.
Translation, Cultural Adaptation and Validation of the Simple Shoulder Test to Spanish
Authors: Arcuri Francisco , Barclay Fernando , Nacul Ivan 
Published: January 2015

Background: The validation of widely used scales facilitates the comparison across international patient samples. Objective: The objective was to translate, culturally adapt and validate the Simple Shoulder Test into Argentinian Spanish. Methods: The Simple Shoulder Test was translated from English into Argentinian Spanish by two independent translators, translated back into English and evaluated for accuracy by an expert committee to correct the possible discrepancies. It was then administered to 50 patients with different shoulder conditions.Psycometric properties were analyzed including internal consistency, measured with Cronbach´s Alpha, test-retest reliability at 15 days with the interclass correlation coefficient. Results: The internal consistency, validation, was an Alpha of 0,808, evaluated as good. The test-retest reliability index as measured by intra-class correlation coefficient (ICC) was 0.835, evaluated as excellent. Conclusion: The Simple Shoulder Test translation and it´s cultural adaptation to Argentinian-Spanish demonstrated adequate internal reliability and validity, ultimately allowing for its use in the comparison with international patient samples.
Prone Elbow Arthroscopy
Authors: Larrain Mario , Rocco Eduardo Di , Riatti Patricio , Vallone Martín , Ferreyra Facundo , Cianciosi Sebastián 
Published: January 2015

Introduction: In the last years the elbow arthroscopy reports have increased. It is very important to perform meticulous portals technique, appropriate selection thereof, and precise diseases treatments. The surgical technique has been described in different decubitus (dorsal, lateral and ventral). According to F. Savoie and L. Field, we believe that the prone position allows anterior and posterior access simultaneously, comprising the entire joint. The aim of the study is to describe our experience in the prone position in the last 10 years, analyzing indications, patient satisfaction and complications. Material and Methods: We retrospectively analyzed case series of surgeries in the last 10 years. We performed 31 elbow arthroscopies, 24 men and 7 women, the most common sport was rugby followed tennis. Results: The most common pathology was anterior and posterior post-traumatic joint stiffness (12 cases), 7 epicondylitis with joint involvement, 7 articular fractures, five loose bodies with osteochondral lesions. One year after surgery, 95% of patients were satisfied with the outcome. Complications, transient palsy in 2 patients, which recovered ad integrum, due to compression secondary to high cuff tire pressure. Conclusion: We believe the prone position elbow arthroscopy technique is ideal for solving most of the surgical indications. Although the high potential of complications ought to important structures proximity, a profound anatomical knowledge and skill arthroscopic make it a safe and reproducible technique.
Arthroscopically Assisted Percutaneous Screwing of Patellar Fractures
Authors: Sel Guillermo Del , Máspero Guillermo , Sel Nicolás Del , Russo Leonardo , Sel Juan Del 
Published: January 2015

Objectives: Restore patellar anatomy and function of extensor mechanism. Reduction of surgical time, improval of rehabilitation and reduce complications of open surgery. Methods: 37 patients with transverse patella fracture operated from June 2004 to April 2012. Inclusion criterion: Both sexes, age 20 to 65 years. Less than 10 days since fracture. Transverse fractures. Exclusion criterion: Comminuted , longitudinal and open fractures. More than 10 days since fracture. Fractures classified with AO and Watson Jones classifications. In all cases close reduction and percutaneous osteosynthesis with conic,canulated, compressive, full threaded screws of 3,5 and/or 5 mm diameter under fluoroscopic and arthroscopic assistance, was performed. Medium follow-up was 31 months (range 24-46) Comparative clinical evaluation of both knees was done: physical exam, X-rays and functional scales ( IKDC ; Lisholm Score, Knee Society score ). Results: Excellent results were achieved in 34 of 37 cases (91.9%). Three patients that had minor complications referred good and fair results: 1 case complain of occasional mild pain, another patient had 110 degrees of flexion compared to 145º on the normal knee and 1 patient had a 3mm step but remains asymptomatic. They were no infections and non needed screw removal. Conclusion: Percutaneous surgery under arthroscopic and fluoroscopic assistance , showed to be a simple and beneficial method for transverse patellar fractures. It takes shorter surgical and hospitalization time. Diminishes complications, morbidity, and achieves earlier range of motion.
Simultaneous reconstruction of anterior cruciate ligament (ACL) with autologous graft and of medial collateral ligament (MCL) with allograft
Authors: Aparicio José Luis , Nardin Lisandro , Savá Matías S. 
Published: January 2015

Introduction: Over the last years, the incidence of multiple ligament injuries has increased significantly due to the rising number of traffic accidents in relation to their kinetics and due to higher sports demands. Among their various combinations, one of them is the lesion of anterior cruciate ligament (ACL) which is associated to medial collateral ligament responsible for them in a 13 %. Nowadays several techniques to the reconstruction of Anterior Cruciate Ligament (ACL) and Medial Collateral Ligament (MCL) are applied. Therefore, for the last three years, we have carried out the simultaneous reconstruction of ACL with autologous graft and of MCL with allograft. Benefits include avoidance of morbidity in multiple donor areas, a safe bone-to-bone fixation in the case of Achilles tendon grafting; tiny incisions in the skin , and anatomical reconstruction. Throughout the years, the use of allografts has been very frequent. This is due to their safety factors, accessibility and their functional outcomes in the long term. Objectives: Show our surgical technique and experience in the combined reconstruction of anterior cruciate ligament with autologous graft and of medial collateral ligament with allograft. Methods: Fourteen (14) patients, with an average age of 29, were evaluated after they had undergone a reconstruction of ACL and MCL with autologous graft and allograft respectively. Average follow-up was 19.6 months. With respect to the surgical technique, it comprises two small incisions placing the anatomical femoral and tibial insertion for the MCL, and arthroscopically the anatomical location of the LCA. Later, some corresponding holes are made to be fixed with blunt Titanium screws following the same procedure. Mobility, joint laxity and subjective functionality were evaluated by means of Lysholm scores and International Knee Documentation Committee (IKDC). Results: The Average Lysholm knee score was 93, while all the patients were classified A/B according to the IKDC and were able to return to their normal sport and daily activity. Their range of motion remained stable. Conclusion: In multiple ligament knee injury, the use of allografts or in combination with autologous graft has become a valid resource. The lower risk of morbidity from the donor zone, the lower exposure of tissues, the lower postoperative pain with the MCL allograft at a low cost and greater security with ACL autologous graft have turned this surgical technique in a viable option for multi-ligament injured knee reconstruction.
Long head of the biceps tendon pathology
Authors: Ibáñez Maximiliano , Calvo Ana Belén , Alvarez Victoria , Lepore Salvador , Ibañez Federico , Reybet Juan , Vedova Franco Della , Aeschlimann Mauro , Taborro Betina 
Published: January 2015

Introduction: Disorders of the long head of the biceps tendon can exist in conjunction with other shoulder pathologies. It was proposed as a cause of pain in patients with rotator cuff injury. A detailed history, thorough physical examination and radiographical evaluation are necessary for a correct diagnosis. The aim of our study was to describe the surgical technique and analyze the results obtained in patients based on the same. Materials and Methods: Were included in this retrospective study 70 patients who had lesions in the long head of the biceps tendon, diagnosed with MRI treated at our institution with arthroscopic biotenodesis technique of the tendon with interference screw in the lower portion of the bicipital groove since January 2009 to January 2012. Functional clinical evaluation was performed with the appropriate scores for the disease (ASES, Rowe, Simple Shoulder Test, Constant Murley). Pain was evaluated using Visual Analog Scale. Results: The Rowe score was 86 points, 81 points ASES, SST 9 points, Constant and Murley 87 points. The VAS showed poor post surgical pain. At the time, no associated deformity similar to a Popeye sign was observed. Discussion: The decision to perform a surgical management of the long head of the biceps pathology depends on the clinical presentation, thorough physical examination with specific test, the presence of associated pathologies and failure of nonsurgical treatment.
Osteochondral lesions of the talus: clinical and functional assessment of conservative vs scope treatment
Authors: Ibáñez Maximiliano , Calvo Ana Belén , Alvarez Victoria , Lépore Salvador 
Published: January 2015

Introduction: Osteochondral injuries involving the ankle joint are unusual (incidence of 0.09% according to Berndt and Harty), third in frequency after knee and elbow location. They are described as a cause of chronic pain after ankle sprains in the active population (thought to occur in 2-6% of sprains). MRI is the gold standard diagnostic method. Therapeutic strategies include both conservative and surgical treatment. The aim of our study was to evaluate the clinical and functional outcome of patients with osteochondral lesions of the talus. Materials and Methods: We retrospectively reviewed 20 patients with osteochondral lesions of the talus treated in our department between January 2007 and December 2012. Sixty per cent were male with an average age of 42 years. Eleven patients were treated conservatively, one of them had clear surgical indication (LOC G III, as classified by Ferkel and Sgaglione) but refused to perform the procedure. Nine patients underwent arthroscopic surgery (debridement and microfracture), one of the procedures was a review of an arthroscopy performed in another service. No open surgery was performed. Clinical and functional evaluation was performed using the AOFAS score, Freiburg and VAS Score System. Results: Non-surgical treatment group had a pretreatment average AOFAS score of 58, which improved to 74.8 points; a Freiburg Score System that ranged from 65 to 79.3 points and a VAS average of 5,4. AOFAS surgical treatment group improved from 54.3 to 84.8 points, Freiburg Score System ranged from 60.6 to 81.4 points and VAS average was of 5,8. Discussion: It is difficult to compare our results with other series of patients, because we made a comparison between conservative versus artrhoscopic treatment, while other authors show results obtained when performing certain surgical technique Although surgical treatment has better results, we agree with the literature that conservative treatment presents acceptable results and should always be considered as the first option.
The MRI appearance of a polyurethane meniscal substitute worsens if it matches articular cartilage lesions of the knee
Authors: Gelber Pablo E. , Petrica Alexandru , Marí-Molina Raquel , Erquicia Juan I. , Pelfort Xavier , Abat Ferran , Monllau Juan Carlos 
Published: January 2015

Objectives: To evaluate the influence of chondral lesions of the knee in function and appearance on magnetic resonance imaging (MRI) of the meniscal implant Polyurethane (Actifit®). Material and Methods: 48 patients were implanted with Actifit® by postmeniscectomía syndrome. The chondral status of their respective compartment was graded at arthroscopy with ICRS scale. Were evaluated functionally Womet, IKDC, Kujala, EVA and satisfaction (0-4). The implant characteristics were evaluated with MRI scale Genovese, assessing its correlation with the degree of chondral damage and functional outcome Results: Mean follow-up of 38 months (25-75). 16 patients had no chondral lesion, 14 had lesion grade II, 10 grade III and IV grade 9. Womet, Kujala improved IKDC and 36.2 ± 7.6, 32.3 ± 13.5 and 39.2 ± 8.1 to 75.8 ± 12.9 (p = 0.02), 75.5 ± 15.4 (p = 0.03) and 85.6 ± 13.4 (0.042), respectively. No relationship between the degree of chondral damage and functional outcome was observed. The shape and size of the implant in RM was worse with higher levels of chondral lesion (p = 0.023). A post-hoc analysis showed that this was only due to the difference between patients without chondral injury versus those with ICRS II-IV. The satisfaction was 3.6 ± 0.8 points. Conclusion: Implementing a Actifit® led to significant pain and functional improvement after a minimum follow-up of 2 years. The size and morphological MRI appearance of meniscal replacement polyurethane was better in patients without chondral lesions. No relationship between the degree of chondral damage and functional outcome was observed.
Right angle to make posteromedial corner tunnels with concomitant posterior cruciate ligament reconstruction. CT evaluation in a cadaveric model
Authors: Gelber Pablo E. , Masferrer Àngel , Erquicia Juan I. , Abat Ferran , Pelfort Xavier , Monllau Juan Carlos 
Published: January 2015

Introduction: The surface medial collateral ligament (LCMs) and the posterior oblique ligament (POL) are sometimes concomitantly reconstructed with the posterior cruciate ligament (PCL). The objective was to determine the most appropriate angle of the femoral tunnel. Material and Methods: 8 cadaveric knees. Bifascicular LCP tunneling performed arthroscopically. Tunnels LCMs and LOP at 0 ° and 30 ° in axial / coronal planes (0A / 30A // 0C / 0C). Were studied by CT and valued intercondylar relationship, PCL ,and tunnels. A 25mm tunnel was the least considered sufficient Results: The LCMs tunnels 30A / 30C and 30A / 0C measured 31.8 ± 3.2 and 32.2 ± 2.8 mm, respectively, without encroaching on the LCP and 17.4 ± 4 and 17.67 ± 3.8mm intercondylar ceiling. The LCMs 0A / 0C and 0A / 30C tunnels were 5.8 ± 5.2 and 7.2 ± 4.7 of intercondilo respectively, without invasion of the PCL. The LCMs tunnels 0A / 30C in 4 cases ended intraarticulararmente. The LOP 30A / 0C and 30A / 30C measured 33 ± 2.7 and 32.3 ± 3mm, without invasion of the PCL and 16.2 ± 5.7 and 19.3 ± 4.6mm of intercondilo. The LOP 0A / 0C and 0A / 30C tunnels were 6.50 ± 3.9 and 2.9 ± 5.3mm of intercondilo. The LOP tunneled 0A / 30C invaded in 3 cases the PCL tunnels and ended intraarticularly on 7 occasions. Conclusions: The angulation of the femoral tunnels LCMs and POL have versatility although the LCP is rebuild concomitantly. LCMs tunnels and POL axially oriented at 0° and 30° in coronal planes have high risk of puncturing the joint and in the case of POL also invade LCP tunnels.
Recurrent Dislocation of the Patella
Authors: Benítez Gustavo 
Published: January 2015

Purpose: To evaluate results of medial patellofemoral ligament (MPFL) reconstruction associated with lateral release and advancement of vastus medialis in recurrent dislocation of the patella. Methods: We retrospectively evaluated 11 patients with a mean follow-up of 19 months. Mean age was 23, mainly women. We did MPFL reconstruction with semitendinosus or gracilis tendon depending on BMI, associated with advancement of vastus medialis and lateral release. Results: Mean Kujala score improved from 46,54 pts. preoperative to 88,36 postoperative. Our main complication was 1 patient with rigid knee, who required movilization under anesthesia and arthroscopic arthrolisis to improve her outcome. Conclusion: The combination of this techniques are a good alternative to treat patients with recurrent patella disclocation, with good short and mid-term results. Biomechanic intra and postop complications of MPFL reconstruction are related to patellar fixation, anatomic positioning of femoral tunnel and knee position of the graft fixation.
Chondroid Metaplasia as a complication of A.C.L reconstruction with patellar tendon
Authors: Batista Jorge , Maestu Rodrigo , Logioco Lucas , Roncolato Diego , Patthauer Luciano 
Published: January 2015

Objective: The anatomic ACL reconstruction technique is a safe and effective method, and it has a low complication rate. We are about to present seven Chondroid Metaplasia cases, with pain and restricted extension between 10° and 30° at mediate post-operative, as a procedure complication. Method and Material: During 2009 and 2013 we have performed 544 ACL reconstructions with anatomical Patellar Graft technique, making notchplastia in only 30% of cases. In all cases, the MRI presented extensive pre-neoligament fibrosis, that showed heterogeneous appearance. Surgical toilette was performed, and the sample was sent for pathologic analysis. Results: The histological analysis reported Chondroid Metaplasia in 100% of cases, presenting a complete symptomatology remission in just six of them, with continuous and sufficient neoligament in the whole cases. Pain persisted in just one patient at post-toilette, regaining full extension. Discussion: The anatomical technique of A.C.L. reconstruction with patellar tendon is a very good option, presenting a low complication rate. In patients with limited extension, it must be required control MRI in order to diagnose and treat these complications at time.
Percutaneous MCL reconstruction technique in acute anterior medial knee instability using cadaveric grafts
Authors: Batista Jorge , Maestu Rodrigo , Teper Sebastián , Ocampo Manuel , Antúnez German , Giménez Martin 
Published: January 2015

Purpose: There are several alternatives described for the treatment of acute injuries of the anterior cruciate ligament (ACL ) and the medial collateral ligament (MCL) of the knee. We present the result of the combined ACL reconstruction and MCL in the same surgical procedure using only percutaneous cadaveric graft in the reconstruction of the MCL ligament. Methods: We retrospectively analyzed 30 patients with acute anterior and medial knee instability surgically treated between August 2007 and September 2013. 27 men and 3 women , mean age 30.53 years (range 18-46 ) The level of pre and post surgical activity was determined by the Tegner score , while the function was evaluated using the Lysholm score and IKDC grade Results: The average follow-up was 43 months (range 12-84 months). The mean Lysholm score was 91 (R, 61-100 ) . Only 19 of 30 (63.3 %) patients returned and kept the pre -injury level sports ; 26 patients IKDC : A (normal knee ), 3 patients IKDC : B (slightly abnormal knee ) and 1 patient IKDC C ( Knee abnormal) with limitation of 15 degrees of extension that had to be reoperated. Conclusion: The use of cadaveric tendons for reconstruction of MCL in combination with ACL reconstruction surgeries resulted in less postoperative pain, good functional results, and a high rate of return to competitive sport. The result of this study shows that the percutaneous reconstruction of LCM cadaveric graft is a viable option.
Regeneration of high-silica zeolites after sulfamethoxazole antibiotic adsorption: a combined in situ high-temperature synchrotron X-ray powder diffraction and thermal degradation study
Authors: Leardini L. , Martucci A. , Braschi I. , Blasioli S. , Quartieri S. 
Published: January 2015

AbstractThe thermal regeneration of sulfamethoxazole (SMX)-loaded Y and ZSM-5 zeolites was studied using a combined in situ high-temperature synchrotron X-ray powder diffraction and thermal degradation study. The evolution of the structural features was monitored in real time in the 30–575°C temperature range by full-profile Rietveld analysis. SMX thermal degradation pathways into high-silica zeolite antibiotic adducts, as well as the release of evolved species are similar to those for pure SMX. The adsorption/desorption process occurs without any significant loss of zeolite crystallinity, though slight deformations to the channel apertures are observed. Regenerated zeolites regain almost perfectly ‘bare’ (i.e. unloaded) material unit-cell parameters and only a slight memory effect, in terms of structural deformations induced by the process, is registered in the channel geometry. Interestingly, these changes do not affect the adsorption properties of the regenerated samples, which are able to re-adsorb comparable amounts of antibiotic molecules as in the first adsorption cycle.