SO - Artigos publicados em revistas indexadas na Pubmed/Medline
Permanent URI for this collection
Browse
Recent Submissions
- Comparative clinical and radiologic evaluation between patients undergoing standard reversed shoulder arthroplasty or bony increased offsetPublication . Amorim-Barbosa, Tiago; Ribau, Ana; Fonte, Hélder; Henrique Barros, Luís; Claro, RuiBackground: Modifications of the medialized design of Grammont-type reverse shoulder arthroplasty (RSA) using a bony increased offset (BIO-RSA) has shown better clinical results and fewer complications. The aim of this study is to compare the clinical results, complications, and radiological outcomes between patients undergoing standard RSA and BIO-RSA. Methods: A retrospective review was performed of 42 RSA procedures (22 standard RSA and 20 BIO-RSA). With a minimum of 1 year of follow-up, range of motion (ROM), Constant shoulder score (CSS), visual analog scale (VAS), and subjective shoulder score (SSS) were compared. Radiographs and computed tomography (CT) scan were examined for scapular notching, glenoid and humeral fixation, and graft healing. Results: At a mean follow-up of 27.6 months (range, 12-48 months), a significant difference was found for active-internal rotation (P=0.038) and for passive-external rotation (P=0.013), with better results in BIO-RSA. No other differences were found in ROM, CSS (P=0.884), VAS score, and SSS. Graft healing and viability were verified in all patients with CT scan (n=34). The notching rate was 28% in the standard RSA group and 33% in the BIO-RSA group, but the standard RSA had more severe notching (grade 2) than BIO-RSA (P=0.039). No other significative differences were found in glenoid and humeral fixation. Conclusions: Bone-graft lateralization is associated with better internal and external rotation and with less severe scapular notching compared to the standard RSA. Integration of the bone graft occurs effectively, with no relevant changes observed on radiographic evaluation.
- Ischiopubic Ramus Resection as Treatment for Giant Cell Tumor of the Bone: Surgical Techniques in Two Clinical CasesPublication . Sousa, Diogo; Pita, Sérgio; Oliveira, Vânia; Cardoso, PedroGiant cell tumors (GCTs) of the ischium are rare and often diagnosed at an advanced stage. In fact, there is no defined treatment algorithm to treat this lesion. We present two case reports of Campanacci's stage three ischiopubic GCT confirmed with biopsy. They were effectively treated with excision of the ischiopubic ramus, aggressive curettage, drilling, and phenolization at the margins. The surgery was performed in a gynecological position with an approach over the ischiopubic ramus. Both cases present no recurrence (two and 10-year follow-up), and neither has a significant impact on the quality of life. A thorough plan and surgical technique were essential for the success of this intervention.
- Curettage or Resection? A Review on the Surgical Treatment of Low-Grade ChondrosarcomasPublication . Castelo, Filipe; Faria, Afonso; Miranda, Hugo; Oliveira, Vânia; Cardoso, PedroIntroduction Low-grade chondrosarcomas (LG-CS), including atypical cartilaginous tumors (ACT), are locally aggressive lesions. The focus of the discussion sits on the differential diagnosis between benign lesions or aggressive cartilaginous tumors and on their treatment: intralesional curettage or wide resection. This study presents the results obtained in the surgical treatment of 21 cases of LG-CS. Methods This retrospective study includes 21 consecutive patients from a single center with LG-CS who underwent surgery from 2013 to 2021. Fourteen were located in the appendicular skeleton, and seven in the axial (shoulder blade, spine, or pelvis). Mortality rate, recurrence, metastatic disease, overall survival, recurrence-free survival, and metastatic disease-free survival were analyzed for each type of procedure and each disease location. Operative complications and residual tumors were also recorded in cases where resection was performed. Survival was calculated using the Kaplan-Meier method. Results Thirteen patients underwent intralesional curettage (11 appendicular and 2 axial lesions), and eight underwent wide resection (5 axial and 3 appendicular). There were six recurrences during the follow-up, 43% of the axial lesions recurred, rising to 100% in axial curetted ones. Appendicular LG-CS recurred in 21% of cases, and only 18% of curetted appendicular lesions were not eradicated. The overall survival for the entire follow-up is 90.5%, and the 5-year survival rate is 83% (12 patients have adequate follow-up). Recurrence-free and metastasis-free survival were higher in resection cases, with 75% and 87.5%, vs. curettage 69.2% and 76.9%, respectively. In 9% of cases, the preoperative biopsy was inconsistent with the pathology of the surgical specimen. Discussion LG-CS and ACT are described as having high survival and low potential for metastatic disease. For this reason, these lesions are subject to a change in treatment philosophy to reflect these characteristics. Intra-lesional curettage is advocated as a less invasive technique for eradicating atypical cartilage tumors and has fewer and less severe complications, which was in accordance with our findings. Diagnosis, however, is challenging; misgrading is frequent and should be considered. Because of this risk of under-treating higher-grade lesions, some authors still defend wide-resection as the treatment of choice. We observed a trend towards longer survival, less recurrence, and metastatic disease with wide resection. Metastatic disease was higher than expected, present in 19% of cases, and always associated with local recurrence. Conclusion LG-CS is still a diagnostic and treatment challenge; patient selection is fundamental. Overall survival is high, independent of treatment choice or lesion location. We found a higher rate of metastatic disease than described in the literature; this, coupled with a misgrading rate of 9%, reflects the difficulty of preoperative diagnosis and the risk of treating high-grade chondrosarcomas as a low-grade lesion. More studies should be carried out with larger samples to obtain statistically robust results.
- Extensive skin necrosis after periprosthetic knee infection: a case that highlights the possibility of complications induced by low-molecular-weight heparinPublication . Fonte, Hélder; Dias Carvalho, Andre; Rosa, João; Pereira, Cláudia; Pereira, Alexandre; Sousa, RicardoWe describe a case of a patient with atrial fibrillation, anticoagulated with dabigatran, that developed severe knee skin necrosis in the setting of an acute periprosthetic knee infection, after initiating low-molecular-weight heparin. A wide range of etiology hypotheses was discussed within a multidisciplinary team. The complex approach consisted of treating the underlying infection, multiple types of soft-tissue management, and stopping enoxaparin.
- Combined antibiotic therapy spacers either commercial or handmade are superior to monotherapy – a microbiological analysis at the second stage of revisionPublication . Dias Carvalho, Andre; Ribau, Ana; Soares, Daniel; Santos, Ana Claudia; Abreu, Miguel; Sousa, RicardoBackground: Antibiotic-loaded spacers are often used during two-stage exchange for periprosthetic joint infections (PJIs) both for its mechanical properties and as a means of local antibiotic delivery. Purpose: The main goal of this study is to compare the efficacy of different options of antibiotic(s) in spacers concerning the rate of positive cultures at the second stage. Patients and Methods: We retrospectively evaluated two-stage exchange procedures for infected hip or knee arthroplasty performed between 2012 and 2018 in which adequate (at least four deep tissue samples) culture results in both stages were available. The type of spacer and antibiotics used, in addition to several other patient, infection and treatment-related variables, were registered and correlated to microbiological findings in the second stage. Results: Fifty-eight cases were included with a 19.0 % (11/58) overall rate of positive cultures during reimplantation. With a mean follow-up of 46 months, failure rate was significantly higher at 63.6 % (7/11) in cases with positive cultures at reimplantation compared to 4.3 % (2/47) for those with negative cultures during reimplantation ( p < 0.001). The need for additional surgeries was also significantly higher (odds ratio (OR) 122.67, confidence interval (CI) 95 % 11.30-1331.32, p < 0.001). Multivariable analysis revealed antibiotics in the spacers were the main independent prognostic risk factor associated with positive cultures at the second stage with an advantage for combined antibiotics. Monotherapy is associated with failure with an OR of 16.99. Longer time between surgeries did not have statistical significance ( p = 0.05), and previous surgical treatment for PJI, presence of difficult-to-treat microorganism(s), duration of systemic antibiotic therapy or even treatment within a dedicated septic team were not shown to be independent risk factors. Among combined antibiotic spacers, there were no significant differences between the rate of positive cultures during the second stage, comparing commercially available vancomycin/gentamicin spacers to hand-mixed vancomycin/meropenem manufactured spacers (8.3 % [2/24] vs. 15.0 % [3/20], p = 0.68). Conclusions: Results show that combined antibiotic therapy spacers are advantageous when compared to gentamicin monotherapy as they produce significantly lower rates of subsequent positive cultures during the second stage. Hand-mixed high-dose vancomycin/meropenem spacers seem to perform just as well as prefabricated commercially available vancomycin/gentamicin options. Level of Evidence: Therapeutic level III.
- Impact of COVID-19 pandemic and national lockdown in an orthopaedic and traumatology department—a comparison with the homologous period of 2019Publication . Ribau, Ana; Vale, João; Xará-Leite, Francisco; Rodrigues-Pinto, RicardoBackground: The coronavirus disease-2019 pandemic has forced health systems to undergo dynamic changes. This study aims to evaluate the impact of the pre-lockdown and of the lockdown period on the surgical activity of a Portuguese Orthopaedic and Traumatology Department and to compare it with the homologous period of 2019. Methods: The surgical activity between March 2 and May 2, 2020 and that of the homologous period of 2019 were analyzed and compared. Additionally, the impact of national and institutional measures was analyzed. Results: There was a decrease in elective surgeries, from 587 to 100. In 2020, 59.3% of all surgeries were urgent and 48.4% were trauma whereas in 2019 there were 25.5% urgent and 23.0% trauma surgeries (P < .001 and P < .001, respectively). There was no difference in the mean of proximal hip fractures operated per week (P = .310), even when analyzing only the lockdown period (P = .102). However, proximal hip fractures corresponded to significantly higher proportion of surgeries in 2020 (P = .04). Hand and tendon injuries significantly reduced in 2020, as were sports-related trauma surgeries. Mean number of days until surgery was significantly lower in 2020 (2020:1.6 ± 2.1, 2019: 2.2 ± 2.5, P = .012). Conclusion: Governmental and institutional measures had high impact on the production and on the epidemiology of trauma. While resumption of elective surgery is needed, lessons from these measures may help in the response to a possible second wave.
- Pyrocarbon Humeral Head in a Shoulder Hemiarthroplasty: Preliminary Results at 3 Years Follow-Up and Review of the Current LiteraturePublication . Campos-Pereira, Eva; Henrique Barros, Luís; Claro, RuiShoulder hemiarthroplasty is a viable option in young patients with an intact rotator cuff in order to preserve the native glenoid. To avoid the dreaded and expected wear of the glenoid in very active shoulders, implants with humeral head coated with a high resistant and elastic material-pyrolytic carbon-are now an option. The authors present the first pyrocarbon coated hemishoulder arthroplasty performed at our Orthopedic Department in a patient with osteonecrosis of the humeral head. At three years of follow-up, the patient is pain free and without limitations in his daily work. The Constant score was applied pre- and postoperatively, and an improvement of 32 points was reported. Larger cohorts with long-term follow-up are required to confirm our promising results.
- If, When, and How to Use Rifampin in Acute Staphylococcal Periprosthetic Joint Infections, a Multicentre Observational StudyPublication . Beldman, Mark; Löwik, Claudia; Soriano, Alex; Albiach, Laila; Zijlstra, Wierd P; Knobben, Bas A S; Jutte, Paul; Sousa, Ricardo; Carvalho, André; Goswami, Karan; Parvizi, Javad; Belden, Katherine A; Wouthuyzen-Bakker, MarjanBackground: Rifampin is generally advised in the treatment of acute staphylococcal periprosthetic joint infections (PJI). However, if, when, and how to use rifampin remains a matter of debate. We evaluated the outcome of patients treated with and without rifampin, and analyzed the influence of timing, dose and co-antibiotic. Methods: Acute staphylococcal PJIs treated with surgical debridement between 1999 and 2017, and a minimal follow-up of 1 year were evaluated. Treatment failure was defined as the need for any further surgical procedure related to infection, PJI-related death or the need for suppressive antimicrobial treatment. Results: A total of 669 patients were analyzed. Treatment failure was 32.2% (131/407) in patients treated with rifampin and 54.2% (142/262) in whom rifampin was withheld (P < .001). The most prominent effect of rifampin was observed in knees (treatment failure 28.6% versus 63.9%, respectively, P < .001). The use of rifampin was an independent predictor of treatment success in the multi-variate analysis (OR 0.30, 95% CI 0.20 - 0.45). In the rifampin group, the use of a co-antibiotic other than a fluoroquinolone or clindamycin (OR 10.1, 95% CI 5.65 - 18.2) and the start of rifampin within 5 days after surgical debridement (OR 1.96, 95% CI 1.08 - 3.65) were predictors of treatment failure. The dosing of rifampin had no effect on outcome.
- Total Knee Arthroplasty for Osteoarthritis in a Patient with Nail Patella Syndrome – A Case ReportPublication . Serrano, Antonio Filipe; Serrano, Pedro MHereditary osteo-onychodysplasia (or nail patella syndrome) is a rare autosomal dominant disease defined by an association of severe characteristics, with a classic clinical tetrad of dysplasia of the fingernails, patellar hypoplasia or absence, presence of iliac horns, and deformities of the elbow, although renal, ocular and neurological involvement may also be present. The main orthopedic complaint of these patients is patellar instability associated with pain and functional limitation. Most of the literature regarding the treatment of NPS-related patellar problems, concerns pediatric population and there is no treatment algorithm defined for adult patients. NPS has a wide range of presentations in skeletally mature patients, and its severity is also very variable. The general practitioner should be familiar with NPS's clinical presentation spectrum, and the orthopedic surgeon with treatment options, in order to provide the most adequate treatment for each patient. Although there is no cure for NPS, several treatments have been useful in the symptomatic treatment of changes in the knees. We describe a rare clinical case of a 47-year-old female patient with NPS who underwent total knee arthroplasty for knee osteoarthritis.
- Risk Factors for Acute Surgical Site Infection after Spinal Instrumentation Procedures: A Case-Control StudyPublication . Amorim-Barbosa, Tiago; Sousa, Ricardo; Rodrigues-Pinto, Ricardo; Oliveira, AntónioBackground: Surgical site infection (SSI) prevalence in spinal instrumentation varies, depending on patient and surgery factors. This study aims to identify patient- and procedure-related factors associated with SSI after spinal instrumentation in 3 patient-specific groups: those undergoing surgery for degenerative, trauma-related, and pediatric deformity conditions. Methods: A case-control (1:2 ratio) analysis of SSI after spinal instrumentation, from 2009 to 2017, in a University Hospital and Spinal Trauma Centre was performed. Results: From a total of 2582 surgeries, 33 cases (1.3%) were identified with SSI according to study inclusion criteria: 14 (out of 1326) in the degenerative group, 11 (out of 207) in the trauma group, and 8 (out of 850) in the pediatric deformity group. Cases were matched with controls (n = 66) of the same group. Univariate analysis identified procedure and anesthesia duration in the degenerative group (P = .032 and .038, respectively), age (P = .014) and need for intraoperative and postoperative blood transfusions (both P = .039) in the trauma group and American Society of Anesthesiologists score (P = .022) and neuromuscular scoliosis (P = .002) in the pediatric deformity group as associated with SSI. After multivariate analysis, procedure duration was independently associated with SSI in degenerative surgery (odds ratio [OR], 2.23; 95% confidence interval [CI], 1.03-4.82) and procedure duration (OR, 3.79; 95% CI, 1.27-11.32) and number of levels instrumented (OR, 11.77; 95% CI, 1.55-89.40) in the trauma group. Conclusions: This study identified procedure duration as a risk factor for SSI after spinal instrumentation in degenerative and trauma spine surgery and the number of levels instrumented in trauma spine surgery. Awareness of these factors will help develop strategies to improve patient and health system overall outcomes.