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Weber Boysen posted an update 3 months, 3 weeks ago
A notable proportion of bone and soft-tissue tumors can be stained by ICG, and the coloration of the tumor after ICG staining was consistently stable. This procedure is equally applicable to benign and malignant neoplasms, irrespective of whether neoadjuvant chemotherapy is employed. This technique is particularly effective at pinpointing remaining tumor cells in the wound, especially critical in cases where piecemeal resection has been performed on patients.
Assessing the accuracy of pedicle screw placement, alongside intraoperative characteristics, radiation exposure, and complication rates constituted the objective of this study involving adult patients with degenerative thoracic and lumbar spinal conditions who underwent robotic-navigated spinal surgery with a state-of-the-art system. The authors analyzed the prospectively collected data of 196 adult patients who underwent pedicle screw implantation with robot-navigated assistance (RNA) using the Mazor X Stealth system, encompassing the period from June 2019 to March 2022. The pedicle screws were implanted by an experienced spinal surgeon following their period of specialized training. The precision of pedicle screw placement was evaluated through the use of intraoperative 3D fluoroscopy. A total of 1123 pedicle screws were implanted, comprising 1001 (89%) robotically placed screws, 63 (6%) of which had their placement technique converted from robotic to manual, and 59 (5%) planned from the start for freehand placement. A robotic assembly process yielded 942 screws (94%) that met Gertzbein and Robbins grade A standards, demonstrating a median deviation of 0.8 mm (interquartile range, 0.4 to 1.6 mm). Twenty pedicle screws (18%) were observed in connection with ‘skive’ events. A comprehensive 90-day follow-up did not reveal any adverse clinical sequelae. The average fluoroscopic exposure time per screw was 49 seconds, with a standard deviation of 38 seconds. Once RNA is mastered, it demonstrates high accuracy and reliability, with its abandonment rate being extremely low. The use of a large series of pedicle screws, using the most current RNA technology, was not accompanied by any detrimental clinical outcomes. Identifying patient-specific anatomical details and recognizing, in real-time during the operation, factors that could negatively impact the placement of screws, hold the promise of further improving precision.
A validated and extensively used classification system for managing periprosthetic femoral fractures is the Unified Classification System (UCS), better known as the Vancouver system. Type B1 stems, possessing secure attachments, are indicated for fixation; however, loose stems of types B2 and B3 necessitate revision. Evaluating if a stem is loose can be arduous, and some authors have cast doubt on the practicality of applying this classification system to polished taper slip stems, which, by definition, possess a loose fit within their cementing enclosure. Recent studies have brought into question the assumption that revision surgery is the automatic preferred choice over fixation surgery in cases of UCS-B periprosthetic fractures around cemented polished taper slip stems. An anatomically reducible fracture, a cement mantle, a firmly fixed femoral bone-cement interface, and a properly functioning acetabular component are crucial indications for fixation. While fixation may seem appropriate, not all type B fractures are suitable, due to the possibility of early failure. The annotation emphasizes fracture patterns for which fixation alone is inadequate.
Minimally displaced greater tuberosity (GT) fractures managed without surgery, and the factors influencing patient response, are areas requiring more research. Patient-derived outcomes in the early stages after these injuries were assessed, along with an exploration of how demographic and injury-related factors affected these outcomes. In a prospective observational cohort study, a total of 101 patients were enrolled, consisting of 53 females and 48 males, exhibiting a mean age of 509 years (19 to 76 years) with minimally displaced GT fractures. Within the first year following the traumatic event, patients experienced an evaluative process using the DASH score to gauge arm, shoulder, and hand impairments, complemented by MRI scans within two weeks to assess accompanying injuries. At the one-year mark, the DASH score was the key outcome. To evaluate the impact of patient demographics, complications, and related injuries on outcomes, multivariate analysis was employed. The mean DASH score demonstrated a substantial improvement, progressing from 423 (SD 96) at six weeks post-injury to 195 (SD 143) at the one-year follow-up point (p < 0.001). A full-thickness rotator cuff tear was evident in 19 patients (19%), according to MRI findings, which also indicated various related injuries. Subsequently, eleven percent (11 patients) experienced complications demanding additional surgical intervention; twenty-one percent (20 patients) also developed subsequent post-traumatic shoulder stiffness. Multivariate analysis pinpointed a high-energy mechanism (p = 0.0009), tobacco use (p = 0.0033), reliance on mobility aids (p = 0.0047), a full-thickness rotator cuff tear (p = 0.0002), and post-traumatic secondary shoulder stiffness (p = 0.0035) as independent predictors of a worse outcome. The results of minimally displaced GT fractures treated without surgical intervention are not uniform. While positive early results are common among patients, a substantial subset unfortunately have much less favorable long-term outcomes. The high incidence of rotator cuff injuries, along with post-traumatic shoulder stiffness, is frequently linked to a less favorable patient experience. Beyond that, individuals with high-energy injuries, who smoke, or those using assistive devices for walking typically have poorer outcomes.
The long-term survival rate is quite positive for patients affected by differentiated thyroid carcinomas (DTCs). Spinal metastases’ negative impact on performance status directly contributes to mortality and indirectly prevents the application of systemic therapeutic options. The best local tumor control is frequently achieved through metastasectomy, when feasible. Our objective was to evaluate the enduring clinical impacts of metastasectomy in patients with secondary malignancies (SMs) of thyroid carcinomas. Between July 1992 and July 2017, we collected data on 22 patients with DTC (16 follicular and six papillary carcinomas) and one with medullary carcinoma, who underwent complete surgical resection of SMs at our institution. Each patient had a minimum postoperative follow-up of five years. Employing Kaplan-Meier analysis, the cancer-specific survival (CSS) was calculated from the initial spinal metastasectomy until death or the final follow-up. A log-rank test was applied to analyze potential factors related to survival outcomes. We investigated clinical parameters and outcome data, encompassing pre- and postoperative disability (Eastern Cooperative Oncology Group Performance Status 3), lung and extraspinal bone metastases, and a history of radioiodine and kinase inhibitor treatments. The surgical assessment revealed lung metastases in ten patients and bone metastases in eight. Recurrences of local tumors were present in three patients at the surgical site. Among 22 patients with DTC, the CSS rates at the five-year and ten-year marks were 77% and 52%, respectively. Patients who experience pre and post-operative impairments and tumour recurrence at the surgical site demonstrate an increased risk of a shorter survival time after the operation. Favorable results were observed following metastasectomy for surgically removable SM originating from DTCs, suggesting improved survival prospects.
The appropriate length of time for systemic antibiotic treatment following the first revision of a total hip arthroplasty (THA) due to periprosthetic joint infection (PJI) remains unclear. A key component of our philosophy is the aggressive removal of necrotic tissue, combined with the application of a high concentration of targeted antibiotics delivered in cement beads and the use of systemic prophylactic antibiotics alone. igf1r signal Our research aimed to ascertain the success rate of this management philosophy, specifically in treating hip PJI, using our two-stage approach. This study involved a retrospective analysis of our prospectively collected database, focusing on all patients undergoing a planned two-stage revision for hip prosthetic joint infection. The Musculoskeletal Infection Society (MSIS) 2013 major criteria, a minimum five-year follow-up, and the MSIS working group’s outcome-reporting tool were used to assess every patient diagnosed with PJI. Outcomes were classified into two groups: ‘successful’ and ‘unsuccessful’. In the 289 patients who had two-stage revision THAs, a total of 299 cases qualified for the study. Of those who qualified, 258 (86%) went on to the second stage of the procedure. The mean age, computed as 681 years, encompassed a spectrum from 28 to 92 years of age. The subjects’ follow-up, with a median of 107 years, had an interquartile range (IQR) of 63 to 150 years. In patients undergoing reimplantation, a notable success rate of 91% was observed, while the success rate fell to 86% when considering those who did not proceed with reimplantation. Patients received systemic antibiotics post-first stage surgery for a median duration of five days, with an interquartile range of 5 to 9 days. A comparison of 48-hour and five-day antibiotic treatments versus longer courses revealed no statistically significant difference in patient outcomes (p = 0.0961 for 48 hours, p = 0.0376 for five days). Statistically significant higher success rates were observed in Gram-positive PJIs (87%) when compared to Gram-negative (84%) and mixed Gram PJIs (72%), (p = 0.0098). The first-stage revision surgery for hip PJI, involving aggressive debridement and simultaneous high-concentration targeted antibiotic application at the surgical site, offers a high likelihood of success, emphasizes responsible antibiotic management, and minimizes hospital costs without the need for prolonged systemic antibiotic use.