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Background Computer-assisted solutions are changing surgical practice continuously. One of the most disruptive technologies among the computer-integrated surgical techniques is Augmented Reality (AR). While Augmented Reality is increasingly used in several medical specialties, its potential benefit in orthopedic surgery is not yet clear. The purpose of this article is to provide a systematic review of the current state of knowledge and the applicability of AR in orthopedic surgery. Methods A systematic review of the current literature was performed to find the state of knowledge and applicability of AR in Orthopedic surgery. A systematic search of the following three databases was performed: “PubMed”, “Cochrane Library” and “Web of Science”. The systematic review followed the Preferred Reporting Items on Systematic Reviews and Meta-analysis (PRISMA) guidelines and it has been published and registered in the international prospective register of systematic reviews (PROSPERO). Results 31 studies and reports are included and classified into the following categories: Instrument / Implant Placement, Osteotomies, Tumor Surgery, Trauma, and Surgical Training and Education . Quality assessment could be performed in 18 studies. Among the clinical studies, there were six case series with an average score of 90% and one case report, which scored 81% according to the Joanna Briggs Institute Critical Appraisal Checklist (JBI CAC). The 11 cadaveric studies scored 81% according to the QUACS scale (Quality Appraisal for Cadaveric Studies). Conclusion This manuscript provides 1) a summary of the current state of knowledge and research of Augmented Reality in orthopedic surgery presented in the literature, and 2) a discussion by the authors presenting the key remarks required for seamless integration of Augmented Reality in the future surgical practice. Trial registration PROSPERO registration number: CRD42019128569 .

Purpose Artists, including painters, are interested in capturing the essence of the world around them, including surgery. Therefore, we explored the world of orthopaedic surgery through the eyes of artists. We asked how artists and painters have captured the artistic vision of orthopaedic surgery by describing the operation, tools and techniques used, and the patients and surgeons involved. Methods The evolution of medical science and the importance of an orthopaedic surgeon art in society during different centuries were evaluated from ancient civilizations to the modern world. The symbolic representation of orthopaedic surgery and orthopaedic surgeons was analyzed over time, to reflect changes in medical practice and societal attitudes towards orthopaedic surgery. Results Ancient Egypt is where the first instances of painting a shoulder dislocation reduction were discovered. The first report of organized surgical care is found in Homer’s epic poem “Iliad,” even if executing surgical operations and artistic representation was undoubtedly done in many ancient civilizations. Orthopaedic surgeons according to the period were represented as gods, saints, monks, heroic figures, military surgeons, and sometimes politics. However, the orthopaedic surgeon was rarely considered an artist by those who are real artists. Paintings often showed orthopedists in action, with blood and tools, emphasizing the gritty reality of the surgical profession, sometimes with some stereotypes (gargantuan figure, gorilla). However, the common thread is the recognition of the skill, knowledge, and dedication required to be a surgeon and the importance of their work in helping people live healthier and more active lives. Conclusion Overall, painters have depicted orthopedic surgeons as skilled professionals who are dedicated to helping their patients achieve better health and mobility. Their depictions have evolved over time, reflecting changes in medical practice and the wider culture. However, the essential message remains the same: orthopaedic surgeons play a vital role in helping people live healthier, more active lives.

Objective This study aimed to investigate whether discontinuation of biological or targeted synthetic antirheumatic disease-modifying drugs (bDMARDs or tsDMARDs) influences the incidence of postoperative complications in patients with rheumatoid arthritis (RA) undergoing orthopedic surgery. Methods A retrospective multicenter cohort study including patients receiving bDMARDs or tsDMARDs who underwent orthopedic surgery was conducted. Data collected encompassed the duration of drug discontinuation and postoperative adverse events, such as delayed wound healing, surgical site infection (SSI), disease flare-ups, and mortality. The association between drug discontinuation and these outcomes was analyzed. Multivariate analyses were conducted to identify potential risk factors for these events. Results A total of 2,060 cases were initially enrolled. After applying inclusion and exclusion criteria, data from 1,953 patients were analyzed. No significant differences were observed between the groups regarding delayed wound healing, SSI, or mortality. However, the incidence of disease flare-ups was substantially higher in the drug discontinuation group and in the interleukin (IL)-6 inhibitor group. Multivariate analysis identified that tumor necrosis factor α and IL-6 inhibitor use was associated with a higher risk of delayed wound healing relative to T-cell function modifiers. Conclusion In orthopedic surgery for patients with RA, maintaining the standard or the half of administration interval of bDMARD appears safe in the preoperative period. However, the drug discontinuation may increase the risk of postoperative flare-ups, particularly with IL-6 inhibitors. In addition, T-cell function modifiers may be associated with a lower risk of delayed wound healing, suggesting their safety profile in this context.

Prediction and control of bone drilling forces are critical to the success of many orthopaedic operations. Uncontrolled and large forces can cause drill-bit breakage, drill breakthrough, excessive heat generation, and mechanical damage to the bone. This paper presents a mechanistic model for prediction of thrust forces and torques experienced during bone drilling. The model incorporates the radially varying drill-bit geometry and cutting conditions analytically, while capturing the material and friction properties empirically through a specific energy formulation. The forces from the chisel edge are modeled by considering the indentation process that occurs in the vicinity of the drill-bit axis. A procedure is outlined to calibrate the specific energies, where only a small number of calibration experiments are required for a wide range of drilling conditions and drill-bit geometry. The calibration parameters for the cortical portions of bovine tibia are identified through drilling tests. Subsequently, a series of validation tests are conducted under different feed rates and spindle speeds. The thrust forces and torques were observed to vary considerably between bones from different animals. The forces from the model were seen to match well with those from the experimentation within the inherent variations from the bone characteristics. The model can be used to select favorable drilling conditions, to assist in robotic surgeries, and to design optimal orthopaedic drill bits.

Background Surgical procedures involving the hip, knee, or spine represent a majority of orthopaedic procedures performed electively in the health care system. Postoperative care is a key aspect of surgery and mobilisation without injury is the primary objective. Recent advances in wearable technologies allow objective evaluation of walking metrics to inform and guide postoperative care following orthopaedic surgery. Purpose The aim of this scoping review is to explore current applications of wearable devices, objective data capture and gait analysis in monitoring postoperative recovery following commonly performed elective orthopaedic procedures of the hip, knee and spine. Methods A search against pre-defined criteria was performed on the following scientific databases from date of inception to February 28th, 2021: Medline (via OvidSP), Embase (via OvidSP) and Cochrane Library (via CENTRAL). Data were collected according to a predetermined checklist including study participants, surgery, wearable device (model), sensor location, and monitoring parameters such as mobility metrics, monitoring timepoints and monitoring duration for each study included in our review. Quality was assessed independently using the Newcastle Ottawa Scale (NOS). Conclusions To our knowledge, this is the first review of wearable monitoring (of postoperative recovery) following hip, knee and spine surgery. Patients undergoing elective orthopaedic procedures may benefit from wearable monitoring of their walking health and mobility metrics.

Background Patients with Ehlers-Danlos syndromes (EDS) often experience high rates of joint subluxations and dislocations, and associated pain that may require surgical interventions. Orthopaedic surgical management is challenging in this population, and patients will often undergo multiple unsuccessful surgeries. Outcomes data specific to patients with EDS are sparse in the orthopaedic surgery literature. We conducted a scoping review to evaluate the evidence and outcomes for orthopaedic surgery specifically for the EDS population. Methods PubMed MEDLINE, Embase, The Cochrane Library, Cochrane Controlled Register of Trials (CENTRAL), CINHL, and Scopus from their inception to February 28, 2024 for all studies that reported outcomes for orthopaedic surgery in patients with EDS. Two reviewers independently determined study eligibility, rated study quality, and extracted data. Methodology followed the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR). The studies in this scoping review include Level III (retrospective cohort and case control) and Level IV (case series) evidence. Results The literature search yielded a total of 71 citations published between 1990 and 2023. All were primary studies. 38 were single case studies, 14 were case series, and 19 were retrospective cohort studies. No randomized clinical studies or systematic reviews were identified. Overall, the reported findings for the various anatomical sites and procedures indicated that surgery outcomes were inconsistent. Our review highlights the need for future research to determine whether currently established surgical approaches for various orthopaedic conditions offer long-term clinical benefit in patients with EDS. This is clearly a challenging diagnosis, and more rigorous clinical studies are required to identify optimal treatment approaches. Conclusions Our review found little evidence-based research to guide optimal surgical treatment in EDS. Established surgical techniques that have been shown to be successful in the wider orthopaedic population should be studied to determine their efficacy in the EDS population.

BackgroundTo achieve an optimal clinical outcome in reverse total shoulder arthroplasty (RSA), accurate placement of the components is essential. The recently introduced navigation technology of augmented reality (AR) through head-mounted displays (HMD) offers a promising new approach to visualize the anatomy and navigate component positioning in various orthopedic surgeries. We hypothesized that AR through HMD is feasible, reliable, and accurate for guidewire placement in RSA baseplate positioning.MethodsTwelve human cadaver shoulders were scanned with computed tomography (CT) and RSA baseplate positioning was 3-D planned using dedicated software. The shoulders were prepared through a deltopectoral approach and an augmented reality hologram was superimposed using the HMD Microsoft HoloLense. The central guidewire was then navigated through the HMD to achieve the planned entry point and trajectory. Postoperatively, the shoulders were CT-scanned a second time and the deviation from the planning was calculated.ResultsThe mean deviation of the entry point was 3.5 mm  ± 1.7 mm (95% CI 2.4 mm; 4.6 mm). The mean deviation of the planned trajectory was 3.8°  ± 1.7° (95% CI 2.6°; 4.9°).ConclusionAugmented reality seems feasible and reliable for baseplate guidewire positioning in reverse total shoulder arthroplasty. The achieved values were accurate.

Background Long-term opioid use, which may have significant individual and societal impacts, has been documented in up to 20% of patients after trauma or orthopaedic surgery. The objectives of this scoping review were to systematically map the research on strategies aiming to prevent chronic opioid use in these populations and to identify knowledge gaps in this area. Methods This scoping review is reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) Checklist. We searched seven databases and websites of relevant organizations. Selected studies and guidelines were published between January 2008 and September 2021. Preventive strategies were categorized as: system-based, pharmacological, educational, multimodal, and others. We summarized findings using measures of central tendency and frequency along with p -values. We also reported the level of evidence and the strength of recommendations presented in clinical guidelines. Results A total of 391 studies met the inclusion criteria after initial screening from which 66 studies and 20 guidelines were selected. Studies mainly focused on orthopaedic surgery (62,1%), trauma (30.3%) and spine surgery (7.6%). Among system-based strategies, hospital-based individualized opioid tapering protocols, and regulation initiatives limiting the prescription of opioids were associated with statistically significant decreases in morphine equivalent doses (MEDs) at 1 to 3 months following trauma and orthopaedic surgery. Among pharmacological strategies, only the use of non-steroidal anti-inflammatory drugs and beta blockers led to a significant reduction in MEDs up to 12 months after orthopaedic surgery. Most studies on educational strategies, multimodal strategies and psychological strategies were associated with significant reductions in MEDs beyond 1 month. The majority of recommendations from clinical practice guidelines were of low level of evidence. Conclusions This scoping review advances knowledge on existing strategies to prevent long-term opioid use in trauma and orthopaedic surgery patients. We observed that system-based, educational, multimodal and psychological strategies are the most promising. Future research should focus on determining which strategies should be implemented particularly in trauma patients at high risk for long-term use, testing those that can promote a judicious prescription of opioids while preventing an illicit use, and evaluating their effects on relevant patient-reported and social outcomes.