EDUARDO ANGELI MALAVOLTA
Projetos de Pesquisa
Unidades Organizacionais
Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Faculdade de Medicina
12 resultados
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- PUBLICATION RATES OF PAPERS PRESENTED AT THE BRAZILIAN ORTHOPEDIC MEETING(2013) EJNISMAN, Leandro; GOMES, Guilherme Seva; OLIVEIRA, Rafael Garcia de; MALAVOLTA, Eduardo Angeli; GOBBI, Riccardo Gomes; CAMARGO, Olavo Pires deObjective: To quantify the publication rates of the papers presented at the 2007 Brazilian Orthopedics Meeting (Congresso Brasileiro de Ortopedia - CBOT). Methods: Evaluation of the proportion of abstracts submitted by the various orthopedic subspecialties and according to the Brazilian states. Then, a Lilacs and PubMed search was performed in order to determine which presentations generated national or international published papers. Results: Sao Paulo and the Southeast region were responsible for the greatest number of presentations at the congress (54.1% and 68.3% respectively). Shoulder and Elbow were the subspecialty responsible for more presentations (13.8%). Among the 653 studies presented at the congress, 174 (26.6%) were published. Oral presentations obtained a publication rate 3.58 times higher than posters. Conclusion: The CBOT publication rate is lower than 30%. Many of the papers presented at the CBOT does not pass the scrutiny of scientific journals and therefore should not be the only source of scientific update of the participants: Descriptive Epidemiologic.
- Rotator cuff repair in patients 50 years of age or younger: A comparative study of functional outcomes in relation to older patients(2023) ASSUNCAO, Jorge Henrique; SILVEIRA, Eric Curi; TAKAYANAGI, Oscar Makoto; SILVA, Fernando Brandao de Andrade e; MALAVOLTA, Eduardo Angeli; FERREIRA NETO, Arnaldo AmadoBackground: Few studies have evaluated the clinical results of surgical treatment of rotator cuff tears in young patients and most of the publications are only case series and with a small number of evaluated individuals. The aim of this study is to compare the clinical outcomes of patients undergoing arthroscopic rotator cuff repair according to age at the time of the procedure.Hypothesis: Patients with 50 years of age or younger undergoing surgical treatment of rotator cuff tear have similar clinical outcomes to older patients.Materials and methods: Retrospective cohort study comparing results obtained after surgical treatment of rotator cuff tears between patients aged 50 years or younger and the older patients by the ASES and UCLA functional scales. Patients undergoing arthroscopy full-thickness rotator cuff repair were included.Results: We evaluated 390 shoulders (377 patients), 94 aged 50 years or younger (median = 46.5 years) and 296 aged over 50 years (median = 60 years). Both groups significantly improved with the procedure after 24 months of follow-up, according to the ASES and UCLA scales (p < 0.001). The groups did not differ in the scores obtained in the preoperative assessments and at 24 months of follow-up. The score obtained on the ASES scale at 24 months of follow-up had a median of 87.2 (IQR = 38) among patients aged 50 years or younger and 90 points (IQR = 26.4) among older patients (p = 0.253). The scores obtained by the UCLA scale were 31 points (IQR = 9) and 33 points (IQR =7) respectively (p = 0.156).Discussion: Our results showed that, after 24 months, the functional results of arthroscopic full-thickness rotator cuff repair did not differ between patients younger than 50 years and older patients. These results are similar to those found by other authors. Both groups of patients achieved significant improvement after the surgical procedure, achieving approximately 90 points on the ASES scale and 32 points on the UCLA scale.(c) 2023 Elsevier Masson SAS. All rights reserved.
- Shoulder pain across more movements is not related to more rotator cuff tendon findings in people with chronic shoulder pain diagnosed with subacromial pain syndrome(2021) ALAITI, Rafael Krasic; CANEIRO, J. P.; GASPARIN, Juliana T.; CHAVES, Thais Cristina; MALAVOLTA, Eduardo A.; GRACITELLI, Mauro E. C.; MEULDERS, Ann; COSTA, Marcelo Fernandes daSupplemental Digital Content is Available in the Text. Neither the number nor severity of rotator cuff tendons reported as abnormal was associated with the pain occurrence across clinically relevant arm movements. Introduction:People with chronic shoulder pain commonly report pain during arm movements in daily-life activities. Pain related to movement is commonly viewed as an accurate representation of tissue damage. Thus, when a person reports pain across a variety of movements, this is often understood as indicative of greater damage.Objectives:We aimed to investigate if movement-related pain that occurs across a wider variety of movements was associated with the number or severity of rotator cuff tendons reported as abnormal on a magnetic resonance imaging (MRI). To answer this question, this study was designed in 3 phases.Methods:We recruited 130 individuals with chronic shoulder pain diagnosed with subacromial pain syndrome. First, a list of daily functional activities commonly reported as painful by people with chronic shoulder pain was generated from 3 well-established outcome measures with 30 individuals and a measurement tool was developed with data from further 100 individuals, which demonstrated to have acceptable content validity, construct validity, internal consistency, interrater reliability, and structural validity. Multiple linear regression was then used to evaluate the hypotheses of the study. A direct acyclic graph was used to select variables for linear regression modelling.Results:There was no association between movement-related pain occurrence across movements and the MRI findings.Conclusion:Our study provides evidence that neither the number of rotator cuff tendons reported as abnormal nor the severity of each tendon imaging finding were associated with pain occurrence across movements and activities commonly perceived as painful by people with chronic shoulder pain.
- MESENCHYMAL CELLS IN ROTATOR CUFF REPAIR -TECHNIQUE DESCRIPTION AND CASE REPORTS(2023) MALAVOLTA, Eduardo Angeli; MICELI, Vinicius Lamboglia; ASSUNCAO, Jorge Henrique; ANDRADE-SILVA, Fernando Brandao; GRACITELLI, Mauro Emilio Conforto; TATSUI, Nelson Hidekazu; ESPIRANDELLI, Luiz Cesar; NETO, Arnaldo Amado FerreiraObjective: To describe a protocol of obtention of mesenchymal stem cells and to report their use as a biological adjuvant in three patients undergoing arthroscopic rotator cuff repair. Methods: Case series of patients who underwent arthroscopic repair of isolated full-thickness supraspinatus tear using mesenchymal stem cells obtained from the bone marrow as a biological adjuvant. All patients were operated on at the same institution, by a surgeon with 13 years of experience. The cells were applied at the end of the procedure, at the tendon-bone interface, at an approximate concentration of 2,000,000 mesenchymal cells/mm3 and a total volume of 5 ml. Results: All patients improved with the procedure, with one excellent and two good results. All cases overcame the minimally important clinical difference. All cases reached tendon healing, without partial or complete re-tears. We observed no complications. Conclusion: Arthroscopic rotator cuff repair with added mesenchymal cells obtained from bone marrow and submitted to a cell expansion process led to good functional results and healing in all cases in the sample, with no complications. Level of Evidence IV, Case Series.
- ARTHROSCOPIC LATARJET PROCEDURE: SAFETY EVALUATION IN CADAVERS(2013) GRACITELLI, Mauro Emilio Conforto; FERREIRA NETO, Arnaldo Amado; BENEGAS, Eduardo; MALAVOLTA, Eduardo Angeli; SUNADA, Edwin Eiji; ASSUNCAO, Jorge HenriqueObjective: To evaluate the safety of arthroscopic Latarjet procedure in cadavers. Methods: Twelve cadaveric shoulders underwent arthroscopic Latarjet procedure in our laboratory for arthroscopy, by four different surgeons. Following surgery, the specimens were subjected to radiographic examination and evaluated by an independent examiner. Nineteen parameters were evaluated, including the coracoid graft fixation, positioning and angulation of the screws, neurological damage and integrity of tendons. Results: Four procedures were considered to be satisfactory, with no difference among the surgeons. The mean angulation of the screws was 27.2 degrees. The subscapularis splitting was, on average, 17.8mm from the upper edge. The coracoid graft was properly positioned relative to equator of the glenoid in 11 cases. There was no injury to the axillary or musculocutaneous nerves. The main complications were: interposition of soft tissue, suprascapular nerve injury, articular deviation of the graft, diastasis and conjoined tendon injury. Conclusion: The arthroscopic Latarjet procedure is a complex technique in which each step must be precise to reduce the risk of complications. Our study showed a high risk of failure of the procedure. Level of Evidence IV, Case Series.
- Comparative study of patients with midshaft clavicle fracture fixed with a locked plate via an open versus percutaneous approach(2023) AMARAL, Felipe Machado do; MALAVOLTA, Eduardo Angeli; SILVA, Fernando Brandao Andrade e; GARCIA JR., Jose Carlos; MOURA, Jakson da Silva; ASSUNCAO, Jorge Henrique; PECORA, Jose RicardoObjective: To compare the results of surgical treatment of midshaft clavicle fractures, treated with the technique of minimally invasive plate osteosynthesis (MIPO) with locking compression plate versus open reduction and internal fixation (ORIF) with locked plate. Methods: Quasi-randomized comparative study, evaluating displaced midshaft clavicle fractures treated with MIPO versus ORIF, with procedures performed by a single surgeon. We evaluated patients at 12 months using the University of California at Los Angeles (UCLA) scale and radiographically at 8, 12, 26 and 52 weeks, in addition to describing complications. Results: We evaluated 44 patients; 22 submitted to MIPO and 22 to ORIF. The median UCLA scores at 12 months were 35 in the ORIF group and 35 in the MIPO group (p = 0.712). All patients had fracture healing at 3 months (p > 0.999). The mean surgery time was 87.5 min in the ORIF group and 47.5 in the MIPO (p < 0.001) group. As complications, 1 suture dehiscence (4.5%), 2 protruding plates (9.1%) and 1 change in sensitivity around the surgical wound (4.5%) were observed in the MIPO group, while in the ORIF group, 15 changes in sensitivity (68.2%) and 3 hypertrophic scars (13.6%) were observed. The only complication that showed a difference between the groups was the change in sensitivity (p < 0.001). No cases of pseudarthrosis or failure of osteosynthesis were identified in either technique. Conclusion: This study demonstrated that the two treatments, ORIF and MIPO, are equally effective in the treatment of displaced middle third clavicle fractures. However, MIPO is superior to ORIF in regard to reduced surgical time and preservation of supraclavicular nerve sensitivity.
- Prognostic Factors for Clinical Outcomes After Arthroscopic Rotator Cuff Repair(2023) MALAVOLTA, Eduardo Angeli; ASSUNCAO, Jorge Henrique; ANDRADE-SILVA, Fernando Brandao; GRACITELLI, Mauro Emilio Conforto; KIYOMOTO, Henry Dan; FERREIRA NETO, Arnaldo AmadoBackground: Limited knowledge exists regarding prognostic factors after rotator cuff repair. Purpose: To identify pre- and perioperative predictors for functional outcomes after arthroscopic rotator cuff repair. Study Design: Case-control study; Level of evidence, 3. Methods: This study included patients who underwent arthroscopic rotator cuff repair between January 2013 and April 2019 and who had preoperative magnetic resonance imaging scans. The procedures were performed by 4 shoulder surgeons at a single institution. Excluded were patients who had previous surgeries, those who underwent open surgery, and those without 12- and 24-month follow-up clinical data. Patient-reported outcomes (American Shoulder and Elbow Surgeons [ASES] Standardized Shoulder Assessment Form and University of California, Los Angeles [UCLA] Shoulder Rating Scale scores) were assessed preoperatively and at 6, 12, and 24 months postoperatively. Using multiple linear regression analysis, the authors evaluated the influence of 29 variables relating to patient, lesion, and procedure characteristics on postoperative outcomes, with the 24-month ASES score as the dependent variable. Results: The study sample consisted of 474 patients (500 shoulders). The median ASES score increased from 41.6 preoperatively to 88.3 at 24 months (P <.001), and the median UCLA score increased from 14 preoperatively to 32 in the same period (P <.001). The following variables were found to be independent predictors for higher 24-month postoperative ASES score: male sex, absence of rheumatologic disease, older age, lower degree of supraspinatus muscle fatty degeneration, acromioplasty, and a higher preoperative ASES score. Conclusion: The prognostic factors for better clinical results at 24 months after arthroscopic rotator cuff repair were male sex, absence of rheumatologic disease, older age, lower degree of fatty degeneration of the supraspinatus muscle, concomitant acromioplasty, and higher preoperative ASES score.
- SHOULDER ARTHROPLASTY IN OSTEOARTHRITIS: CORRELATION BETWEEN FUNCTION AND RADIOGRAPHIC PARAMETERS(2013) GRACITELLI, Mauro Emilio Conforto; DUARTE, Fernando Aires; TOFFOLI, Rogerio Padovani; BURNATO, Joao Henrique; MALAVOLTA, Eduardo Angeli; FERREIRA NETO, Arnaldo AmadoObjectives: To evaluate the correlation between radiographic parameters and functional assessments of patients with osteoarthritis of the shoulder who underwent shoulder arthroplasty and to describe the functional outcomes of this procedure in our institution. Methods: We evaluated 21 patients (22 shoulders) who underwent shoulder arthroplasty between 1998 and 2010 and with a minimum follow-up of 12 months. Clinical evaluation was performed using the Constant-Murley scale, UCLA, EVA and by measuring the active motion. We analysed preoperative (distance between the top of the head and the humerus and the acromion, superior migration, neck angulation, medial ""offset"", subluxation, glenoid erosion) and postoperative radiographic parameters (rod inclination, migration of components and loosening). Results: Patients showed significant improvement in all parameters: flexion (p = 0.0083), abduction (p = 0.0266), external rotation (p = 0.0062), Constant-Murley (p = 0.0001), UCLA (p < 0.0001) and VAS (p = 0.0002). The superior migration of the humerus showed a significant correlation with UCLA and Constant-Murley scores (p = 0.0480 and p = 0.0110, respectively). The other radiographic parameters showed no correlation with the clinical outcomes. Conclusion: The superior migration of the humerus is related to worse clinical scores.
- TRAPEZIUS MUSCLE TRANSFER FOR EXTERNAL SHOULDER ROTATION: ANATOMICAL STUDY(2014) GRACITELLI, Mauro Emilio Conforto; ASSUNCAO, Jorge Henrique; MALAVOLTA, Eduardo Angeli; SAKANE, Daniel Takashi; REZENDE, Marcelo Rosa de; FERREIRA NETO, Arnaldo AmadoObjective: To compare the viability of transferring the lower and transverse trapezius to the greater tuberosity using three different techniques. Methods: Twelve shoulders from six cadavers were used. The primary outcome was to assess the suture viability of the trapezius muscle transfer to the greater tuberosity in the insertion topography of the infraspinatus, with the arm adducted during internal rotation (hand on the abdomen) and maximum scapular retraction. Three transfers were applied to each shoulder: the lower and transverse trapezius distal insertion (Group 1); lower trapezius alone (Group 2); and lower trapezius insertion and origin (Group 3). Accessory nerve integrity was assessed before and after transfers. Results: Sutures were viable in 42% (5/12) and 58% (7/12) on Groups 1 and 3, respectively, with no statistically significant difference (Fisher's test, p = 0.558); Group 3 exhibited frequent neurologic injury (11/12). Group 2 was the least successful; the tendon did not reach the greater tuberosity, and no sutures were viable. Conclusion: Groups 1 and 3 exhibited the best nongrafting suture viability to the greater tuberosity; however, Group 3 was associated to frequent spinal accessory nerve injury.
- Using Machine Learning to Predict Nonachievement of Clinically Significant Outcomes After Rotator Cuff Repair(2023) ALAITI, Rafael Krasic; VALLIO, Caio Sain; ASSUNCAO, Jorge Henrique; SILVA, Fernando Brandao de Andrade e; GRACITELLI, Mauro Emilio Conforto; NETO, Arnaldo Amado Ferreira; MALAVOLTA, Eduardo AngeliBackground: Although some evidence suggests that machine learning algorithms may outperform classical statistical methods in prognosis prediction for several orthopaedic surgeries, to our knowledge, no study has yet used machine learning to predict patient-reported outcome measures after rotator cuff repair. Purpose: To determine whether machine learning algorithms using preoperative data can predict the nonachievement of the minimal clinically important difference (MCID) of disability at 2 years after rotator cuff surgical repair with a similar performance to that of other machine learning studies in the orthopaedic surgery literature. Study Design: Case-control study; Level of evidence, 3. Methods: We evaluated 474 patients (n = 500 shoulders) with rotator cuff tears who underwent arthroscopic rotator cuff repair between January 2013 and April 2019. The study outcome was the difference between the preoperative and 24-month postoperative American Shoulder and Elbow Surgeons (ASES) score. A cutoff score was calculated based on the established MCID of 15.2 points to separate success (higher than the cutoff) from failure (lower than the cutoff). Routinely collected imaging, clinical, and demographic data were used to train 8 machine learning algorithms (random forest classifier; light gradient boosting machine [LightGBM]; decision tree classifier; extra trees classifier; logistic regression; extreme gradient boosting [XGBoost]; k-nearest neighbors [KNN] classifier; and CatBoost classifier). We used a random sample of 70% of patients to train the algorithms, and 30% were left for performance assessment, simulating new data. The performance of the models was evaluated with the area under the receiver operating characteristic curve (AUC). Results: The AUCs for all algorithms ranged from 0.58 to 0.68. The random forest classifier and LightGBM presented the highest AUC values (0.68 [95% CI, 0.48-0.79] and 0.67 [95% CI, 0.43-0.75], respectively) of the 8 machine learning algorithms. Most of the machine learning algorithms outperformed logistic regression (AUC, 0.59 [95% CI, 0.48-0.81]); nonetheless, their performance was lower than that of other machine learning studies in the orthopaedic surgery literature. Conclusion: Machine learning algorithms demonstrated some ability to predict the nonachievement of the MCID on the ASES 2 years after rotator cuff repair surgery.