Perioperative Management of Patients with Inflammatory Rheumatic Diseases Undergoing Major Orthopaedic Surgery: A Practical Overview
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Patients with inflammatory rheumatic diseases often need orthopaedic surgery due to joint involvement. Total hip replacement and total knee replacement are frequent surgical procedures in these patients. Due to the complexity of the inflammatory rheumatic diseases, the perioperative management of these patients must envisage a multidisciplinary approach. The frequent association with extraarticular comorbidities must be considered when evaluating perioperative risk of the patient and should guide the clinician in the decision-making process. However, guidelines of different medical societies may vary and are sometimes contradictory. Orthopaedics should collaborate with rheumatologists, anaesthesiologists and, when needed, cardiologists and haematologists with the common aim of minimising perioperative risk in patients with inflammatory rheumatic diseases. The aim of this review is to provide the reader with simple practical recommendations regarding perioperative management of drugs such as disease-modifying anti-rheumatic drugs, corticosteroids, non-steroidal anti-inflammatory drugs and tools for a risk stratification for cardiovascular and thromboembolic risk based on current evidence for patients with inflammatory rheumatic diseases.
KeywordsBiological DMARD Inflammatory rheumatic diseases Perioperative management Rheumatoid arthritis Systemic lupus erythematosus
Inflammatory rheumatic diseases (IRD) are chronic systemic autoimmune diseases. Considering that the prevalence of rheumatoid arthritis (RA) is 0.5–1%, of psoriatic arthritis (PsA) is around 0.16% and of systemic lupus erythematosus (SLE) is up to 0.1% of the general population, overall they are frequent diseases . Due to the association with multiple comorbidities, IRD need a multidisciplinary management. Compared with healthy subjects, patients with IRD are also burdened with a higher risk of infections, due to the immunosuppressive treatment with disease-modifying anti-rheumatic drugs (DMARDs) and corticosteroids, an increased cardiovascular (CV) risk, and a major risk of an altered coagulation state, in turn due both to inflammation and, in some cases, to the presence of anti-phospholipid antibodies (aPL) [2, 3, 4, 5, 6].
Patients with IRD may need to undergo joint replacement to restore function when joints have been severely damaged by complications related to their underlying disease, such as inflammatory arthritis, osteonecrosis or secondary osteoarthritis; however, due to the improved medical management and better health conditions in recent decades, rates of orthopaedic surgery for age-related osteoarthritis are increasing . Da Silva et al. documented a 34% estimated cumulative incidence of joint surgery at 30 years in a longitudinal study conducted from 1955 to 1995 in RA patients . The same authors have reported an overall trend towards a reduction in joint surgery in those patients who were diagnosed as having RA after 1985. Later studies have confirmed that the incidence of total hip arthroplasty (THA) and total knee arthroplasty (TKA) in RA patients has decreased in the last decades, probably due to an earlier diagnosis, a prompt treatment initiation, and the introduction of biological drugs in the treatment armamentarium [9, 10]. Other studies have shown that 4% of SLE patients and 7% of a PsA cohort undergo arthroplasty [11, 12]. The majority of patients with SLE undergoing THA or TKA are on immunosuppressive medications at the time of surgery . Nevertheless, the perioperative management of patients with IRD is still not standardised.
Against this background, perioperative care of patients with IRD requires standardisation and a multidisciplinary approach envisaging a collaboration between rheumatologists and orthopaedics, with the aim of performing an appropriate risk assessment and minimizing perioperative risk.
In this narrative review, we analysed recent evidence regarding the perioperative management of patients with IRD undergoing major orthopaedic surgery. We searched PubMed with no temporal limitations and performed a critical analysis of the most recent literature published in English, focusing on the last 5 years.
Compliance with Ethics Guidelines
This article is based on previously conducted studies and does not contain any studies with human participants or animals performed by any of the authors.
Disease-Modifying Anti-rheumatic Drugs (DMARDs)
The first ACR/AAHKS recommendation suggests continuing the current dose of methotrexate (MTX), leflunomide (LEF), hydroxychloroquine, and/or sulfasalazine in patients with RA, spondyloarthritis (SpA) including ankylosis spondylitis (AS) and PsA and SLE undergoing elective THA or TKA . Evidence is available for RA patients, and MTX is one of the best characterised DMARDs as far as perioperative management is concerned. The largest prospective cohort study concerning the evaluation of discontinuation of MTX perioperatively in patients with RA has been presented by Grennan et al. demonstrating no increase in the rate of infections and surgical complications within 1 year of elective orthopaedic surgery if MTX was continued . However, perioperative risk was increased by the intercurrent presence of chronic diseases like diabetes or steroid treatment. Indeed, discontinuation of MTX in the perioperative period increases the risk of disease flares: after 6 weeks from surgery, no flares occurred in those patients who continued MTX, whereas almost 10% of those who discontinued MTX experienced a flare. Other studies confirmed the observation of a higher risk of disease flares in patients discontinuing MTX treatment in the perioperative period .
Data on other DMARDs are sparse. However, it is widely recognised that hydroxychloroquine is not a potent immunosuppressant, rather an immunomodulatory drug, and, due to its extremely favourable toxicity profile and safety in the perioperative period, can be continued [18, 19]. Indeed, in patients with SLE, hydroxychloroquine reduces disease activity, CV risk, insulin resistance and thromboembolic events; therefore, in the perioperative period, it should not be discontinued and could even be protective [20, 21, 22].
Conflicting results have been published in regard to leflunomide (LEF) [23, 24, 25]. A significant increase in wound-healing complications has been reported in patients treated with LEF, as compared with patients treated with MTX . However, no difference was found in the risk of complications between patients who continued LEF and patients in whom LEF was stopped 1 month before surgery . In one prospective study, patients with RA and LEF was associated with a higher risk of postoperative wound complication . It is not surprising that recommendations regarding the perioperative use of LEF differ . Müller and Pippi-Ludwig suggested continuing LEF alone for patients undergoing low-risk procedures and co-treating patients undergoing high-risk procedures with cholestyramine .
There is general agreement on the safety of continuing perioperatively other immunosuppressors such as azathioprine and sulfasalazine, although some authors suggest withholding of these drugs the day of surgery [30, 31, 32, 33, 34]. In one retrospective study, sulfasalazine was associated with a lower risk of perioperative infection .
JAK inhibitors have been introduced more recently in RA treatment as targeted synthetic DMARDs for JAK/STAT pathway blockade. Tofacitinib is the first inhibitor of the JAK1 and JAK3 signalling pathways that has demonstrated efficacy in controlling disease in RA . Tofacitinib half-life is very short (3–4 h) . Recommendations suggest stopping this medication 1 week prior to surgery, although evidence comes from meta-analyses in non-surgical patients .
The ACR/AAHKS recommendations define severe SLE patients those currently treated with induction or maintenance therapy for severe organ manifestations such as lupus nephritis, central nervous system involvement, severe haemolytic anemia, severe thrombocytopenia, vasculitis (other than mild cutaneous vasculitis), myocarditis, lupus pneumonitis, severe myositis, lupus enteritis (vasculitis), lupus pancreatitis, cholecystitis or hepatitis, protein-losing enteropathy, malabsorption, orbital inflammation/myositis, severe keratitis, posterior severe uveitis/retinal vasculitis, severe scleritis, optic neuritis, anterior ischemic optic neuropathy . The recommendation for severe SLE patients is to continue the current dose of MTX, mycophenolate mofetil, azathioprine, cyclosporine, or tacrolimus through the surgical period, due to the risk of flare outweighing the risk of severe complications. This recommendation is based on the lack of sound evidence in severe SLE patients and on the presence of indirect evidence from transplant patients continuing immunosuppressive treatment in the surgical period [37, 38]. However, the ACR/AAHKS Panel also recognises the importance of taking decisions on an individual basis .
In non-severe SLE, the recommendation is to withhold the current dose of mycophenolate mofetil, azathioprine, cyclosporine or tacrolimus 1 week before the surgery, allowing a return of immune function. These medications have to be restarted 3–5 days after surgery, in the absence of wound healing and infections. This recommendation is linked to the Panel’s idea that careful monitoring of the patient after surgery would permit the medications to be restarted prior to clinical flares .
Even if there is no evidence specifically regarding the perioperative management of cyclosporine in PsA patients, three studies regarding cyclosporine use in IBD patients found no elevated risk of complications. All the patients with individual risk factors and comorbidities have to be evaluated case-by-case [39, 40]. Apremilast is a targeted synthetic DMARD indicated for PsA . Patients undergoing major surgery within 8 weeks prior to study, and patients with a planned major surgery within 6 months following initial randomization, were excluded from the registrational PALACE study , therefore there are no current recommendations for the perioperative use of apremilast (http://www.ema.europa.eu/ema/index.jsp?curl=pages/medicines/human/medicines/003746/human_med_001835.jsp&mid=WC0b01ac058001d124). However, it is an overall safe drug, which carries a low risk of serious infections . For further safety in high-risk patients, it may be stopped 3 days before surgery, based on its half-life.
The management of biological agents in the perioperative period is a clinical dilemma, due to the need to balance infectious risk and compromised healing and the risk of disease flares. Until now, a suspension period of two half-lives of the biological drugs has been suggested. However, no randomised clinical trials are currently available for IRD patients undergoing THA or TKA. After a systematic review of the literature, the ACR/AAHKS Panel found that the risk of serious infections was increased with biological agents, with most odds/hazards/risk ratios ~ 1.5 (range 0.61–8.87) and a higher risk of serious adverse events with most odds/hazards/risk ratios ~ 1.5 (range 0.33–2.54), with no relevant differences among available biological agents . Similar evidence is also available for psoriatic arthritis . Therefore, the ACR/AKHS recommendation suggests that RA, SpA and non-severe SLE patients should stop all current biological agents prior to elective THA or TKA, planning the surgery at the end of the dosing cycle for that specific medication .
The choice to resume these medications at minimum 14 days after surgery is based on the normal time of wound healing, but in IRD patients should be based on an individual basis, considering possible complications in wound healing and ruling out surgical site or systemic infections . The recommendations also take into account biologics specifically indicated for PsA and other SpA, such as ustekinumab and secukinumab .
As far as B cell-targeted therapies, after a systematic review of the ACR/AAKHS in non-surgical patients with RA and SLE, a risk of serious infections with rituximab with a relative risk (RR) ranging from 0.66 to 0.73 [41, 45], and a risk for all serious adverse events with a range of RRs from 0.85 (95% CI 0.62–1.17) to 0.89 (95% CI 0.7–1.14), emerged. However, most data were indirect and the Panel considered these medications to be similar to tumor necrosis factor inhibitors used for the treatment of RA, which usually have a risk of infection . Moreover, rituximab is not approved by the US Food and Drug Administration (FDA) for treatment of SLE, and belimumab, although FDA-approved for use in SLE, has not been studied in manifestations of severe SLE (e.g. lupus nephritis) [44, 45], so the Panel recommended withholding these medications prior to surgery and planning the surgery for the end of the dosing cycle, due to the risk of infection and the paucity of data supporting perioperative benefit in SLE [44, 46, 47].
Non-steroidal Anti-inflammatory Drugs (NSAIDs)
Non-steroidal anti-inflammatory drugs (NSAIDs) are used for pain and stiffness in patients with inflammatory arthritis such as RA and SLE, and are a mainstay in the treatment of SpA . NSAIDs directed against cyclooxygenase (COX)-1 and non-selective COX inhibitors exert their anti-inflammatory effect by reversibly blocking the enzymes of the COX family, subsequently decreasing prostaglandin synthesis, but they also exert an antiplatelet effect, implying increased risk of bleeding [49, 50]. NSAIDs have variable half-lives ranging from 2 to 6 h (ibuprofen, ketoprofen, indomethacin), to 7–15 h (celecoxib, naproxen, diflunisal), to > 20 h (meloxicam, nabumetone, piroxicam) . It is advisable to withhold NSAIDs preoperatively for a period equivalent to five half-lives of the drugs  and to re-start them 2–3 days postoperatively .
Acetilsalicilic acid/aspirin is an irreversible inhibitor of platelet function. Due to its wide use as an anti-platelet agent for primary and secondary prevention in patients with IRD, perioperative management of acetilsalicilic acid will be reviewed below.
Selective COX-2 inhibitors, also known as coxibs, were developed to minimize NSAID-related side effects, and do not appear to significantly increase the risk of perioperative bleeding , but they have been suggested to increase the risk of CV events [55, 56, 57, 58]. The use of coxibs has been discouraged in patients who have a high CV risk or who have thrombophilic factors such as patients with SLE and anti-phospholipid antibodies . However, in a recent study, one of the coxibs, celecoxib, was found to be non-inferior to ibuprofen or naproxen with regard to CV safety if given in moderate doses . Evidence from animal studies suggests that COX-2 inhibitors may also have a negative effect on tendon healing and tendon to bone attachment . This is probably due to the inhibition of the inflammatory response, as prostaglandins in particular facilitate the formation of bone, increasing the proliferation and differentiation of osteoblasts [62, 63, 64]. Similar evidence has also been found for non-selective NSAIDs . Based on these findings, the perioperative use of NSAIDs should be carefully evaluated in patients with IRD, due to the increased CV risk, and, although data are controversial, due to the possible interference with wound healing, which in patients with IRD could be already impaired due to other treatments such as DMARDs and corticosteroids. Although coxibs are not associated with an increased postoperative bleeding risk and are considered safe perioperatively , they may also interfere with wound healing. The association of paracetamol with opioids in the postoperative period could be a safe and effective alternative .
Patients on chronic corticosteroid therapy undergoing major orthopaedic surgery are often given high perioperative doses (named “stress-dose”) out of fear of adrenal gland insufficiency . The cut-off dose of corticosteroids able to induce immunosuppression and hypothalamic–pituitary–adrenal axis suppression has long been debated and has not been established yet [69, 70]. There is evidence that a dose of 20 mg of prednisone for 5 days is already sufficient to inhibit cortisol synthesis, while the length of corticosteroid treatment is also a relevant issue . However, the long-term use of corticosteroids is associated with an increased risk of perioperative infection and wound-healing complications [72, 73, 74]. RA patients taking chronic corticosteroids have increased rates of joint infections after joint replacement, with a risk 2.5–3 times greater than that of the general population . Cosyntropin testing, which has been suggested in the past as a preoperative screening for adrenal insufficiency, has been demonstrated to be unreliable, because it may also result positive in those patients with secondary adrenal insufficiency which can actually increase the production of endogenous glucocorticoids . For this reason, it is no longer recommended . The usefulness of a preoperative corticosteroid stress-dose has long been debated. Although there is no evidence of an increased risk of adverse events in patients taking a perioperative stress-dose compared with the usual dose of corticosteroids , there is no proof-of-concept that a routine administration of a stress-dose may reduce the risk of haemodynamic instability in adult patients with IRD undergoing major orthopaedic surgery receiving ≤ 16 mg/day prednisone or equivalent [70, 78].
Based on this evidence, the ACR/AAKHS guidelines recommend not to routinely administer a preoperative stress-dose to patients, as long as they continue the usual daily dose of corticosteroids, which should whenever possible, be gradually tapered to a daily dose of prednisone or equivalent of < 20 mg before surgery, . Nevertheless, patients with IRD in chronic corticosteroids therapy should be carefully monitored and given additional steroid doses if they develop signs of haemodynamic instability such as hypotension or tachycardia [70, 79]. Recommendations do not refer to patients with primary adrenal insufficiency or primary hypothalamic disease, who must be managed differently .
In those patients who are taking a daily dose of steroids— > 15 mg of prednisone or equivalent—who cannot reduce the dosage due to the risk of disease flare, it is especially important to ensure meticulous sterile techniques, careful intraoperative skin handling, tight closure and proper antibiotic prophylaxis . The use of other non-pharmacological strategies such as antibiotic-loaded bone cement was proposed almost 10 years ago as an appropriate measure in high-risk patients—such as those affected by IRDs or other chronic diseases predisposing to perioperative infections—and has nowadays become a widespread measure .
In those patients taking high-dose steroid treatment who plan to undergo elective surgery, it is recommendable, if possible, to wait until a better control of disease activity is achieved or until the steroid dosage is reduced, if tapering is planned in the short–medium term.
Perioperative Antibiotic Prophylaxis
There is currently no evidence that patients with IRD should follow a perioperative antibiotic protocol different from the general population. Therefore, we recommend to follow the available guidelines for the prevention of surgical site infections. Current guidelines suggest the use of cefazolin—or vancomycin or clindamycin in the case of beta-lactam allergy—for total joint replacement. For procedures in which there is a risk of contamination by pathogens other than staphylococci and streptococci, an additional agent should be considered. Local and national surveillance data are pivotal in such cases . The presence of MRSA contamination should be ruled out in order to plan the appropriate antibiotic treatment. It is well known that nasal carriers are likely to have extranasal contamination sites with the same strain [83, 84]. The optimal timing and duration of prophylactic antibiotics is still controversial. Current guidelines suggest starting intravenous prophylactic antibiotics within 60 min before skin incision and stopping it within 24 h postoperatively [SIGN publication no. 104, July 2008, http://www.sign.ac.uk] .
Management of Cardiovascular Risk and Anti-platelet Agents
Patients with IRD have a higher risk of CV events than the general population, and this burden is not fully explained by traditional risk factors, with chronic inflammation playing a pivotal role [4, 6, 86]. Recently, the European League against Rheumatism (EULAR) suggested recommendations for the assessment and management of CV risk in RA patients . Patients with IRD may be at higher risk for CV complications when undergoing arthroplasty . CV events are a major perioperative complication in orthopaedic surgery, particularly in those patients with underlying CV risk factors . In a large cohort of patients undergoing major non-cardiac surgery, Lee et al. reported a 2.1% rate of major postoperative CV complications . SLE patients are burdened by a risk of CAD 50 times higher than age-matched controls, but studies regarding perioperative CV risk are few and controversial ; however, post-arthroplasty mortality seems to be increased, in particular after non-elective arthroplasty .
Before surgery, the American College of Cardiology/American Heart Association (ACC/AHA)  recommends the stratification of CV risk by means of instruments such as the American College of Surgeons National Surgical Quality Improvement Program (NSQIP). Five predictors of perioperative myocardial infarction/cardiac arrest are included: type of surgery, functional status, elevated creatinine (> 1.5 mg/dL), American Society of Anesthesiologists (ASA) class (Class I, patient completely healthy; Class II, patient with mild systemic disease; Class III, patient with severe systemic disease that is not incapacitating; Class IV, patient with incapacitating disease that is a constant threat to life; and Class V, a moribund patient who is not expected to live for 24 h, with or without the surgery), and age (http://www.surgicalriskcalculator.com/miorcardiacarrest) . This tool does not take into account other factors specifically related to the presence of an IRD or of specific disease-related CV risk factors such as the presence of antiphospholipid antibodies, which should instead be considered during CV risk stratification .
The 2014 ACC/AHA Guideline on Perioperative Cardiovascular Evaluation and Management of Patients Undergoing Noncardiac Surgery suggest that revascularization before noncardiac surgery is recommended only when indicated by existing clinical practice guidelines . To avoid stent re-thrombosis, elective orthopaedic surgery should be delayed after percutaneous intervention for 14 days after balloon angioplasty and for 30 days after bare-metal stent implantation, whereas it should be avoided for at least 365 days after drug-eluting stent implantation. In patients who have received coronary stents and are undergoing double antiplatelet therapy, it is recommended that aspirin be continued if possible and that the P2Y12 platelet receptor–inhibitor should be restarted as soon as possible after surgery (Fig. 2).
Beta-blockers should be continued in patients who are treated chronically . Initiation of hydroxychloroquine for a CV protective effect , of a beta-blocker for heart rate control, of statins for endothelial and CV risk reduction may provide additional protection with very low risk of side effects, and may be considered in some patients .
Management of Venous Thromboembolism (VTE) and Anti-coagulants
Patients with IRD are at higher risk of venous thromboembolism (VTE), particularly after hospitalisation [102, 103, 104], but also as a consequence of chronic inflammation, which is known to induce endothelial activation [105, 106, 107], increased tissue factor expression and inhibition of endogenous anticoagulants and fibrinolysis . Major orthopaedic surgery enhances the risk of VTE, not only because of the activation of the coagulation system due to tissue, bone, and venous injuries, reduced venous emptying intra- or post-surgery, and post-operative immobilisation [109, 110], but also due to its complexity and duration . Pulmonary embolism is a largely underestimated cause of death .
Altered coagulation in patients with IRD may also be due to the presence of aPL antibodies, which cause an acquired thrombophilic state . APS can manifest as venous or arterial thromboembolism and obstetric complications and its classification criteria require at least one clinical criteria among arterial, venous or obstetric events and one laboratory criteria among confirmed persistent positivity of lupus anticoagulant (LA), anti-cardiolipin and/or anti-β2glycoprotein I antibodies . Patients with APS have a high risk of venous thrombosis after surgery , in agreement with the “second hit” theory: in addition to the presence of aPL, a second factor such as infection or surgical stress is usually needed to trigger a thromboembolic event .
For the secondary prevention of VTE in IRD patients, due to the risk of recurrency after the first episode of thrombosis, patients with APS are treated with long-term oral anticoagulation and therefore require bridging with subcutaneous low-molecular-weight heparin (LMWH) or intravenous unfractionated heparin. Communication between the medical, surgical, and anaesthesiology teams is essential for a successful outcome. For patients undergoing major orthopaedic surgery, the ACCP suggests extending thromboprophylaxis in the outpatient period for up to 35 days from the day of surgery rather than for only 10–14 days, adding an intermittent pneumatic compression device (IPCD) during the hospital stay, if indicated. In patients with IRD and a full-blown APS, given the very high thrombotic risk, elective surgery should be strongly discouraged whenever possible and the least invasive option should be pursued. Appropriate bridging envisages: suspension of oral anticoagulation 3–5 days before surgery; bridging therapy with full anticoagulation with heparin or LMWH, which must be discontinued 4 or 24 h before surgery, respectively, and restart of full anticoagulation 24–48 h after the procedure if haemostasis is not compromised (Fig. 3). Despite the proper use of bridging therapy, some patients may develop thrombotic complications, particularly those with concomitant SLE . Until a few years ago, vitamin K antagonists were the outpatient anticoagulants of choice, but many newer anticoagulants are now available . Bridging guidelines should be adjusted on the basis of the washout periods of these medications as, to date, there are no consensus recommendations.
Hydroxychloroquine has been demonstrated to reduce VTE risk in SLE [124, 125, 126], and to have a CV protective effect . Evidence is controversial for an additional protective effect from VTE in the perioperative period [127, 128, 129, 130, 131] and for primary prevention of thrombotic events in APS . However, due to its excellent safety profile, this may be a safe and appropriate addition to current therapy in high-risk patients.
Other practical management strategies for potential perioperative complications should also be discussed, such as avoiding dehydration of the patient, minimising periods without anticoagulation, restarting postoperative anticoagulation as early as possible, and encouraging postoperative ambulation and mobilization as early and as much as tolerated, through the use of anti-thrombotic stockings and IPCD . However, the use of anti-embolism stockings should be avoided in patients with arterial vasculopathy, leg ulcers and peripheral neuropathy, which are all frequent comorbidities in IRD patients [National Institute for Health and Clinical Excellence (NICE) (2010) CG92: Venous thromboembolism in adults admitted to hospital: reducing the risk, http://www.guidance.nice.org.uk/CG92/Guidance].
Bleeding risks factors are previous haemorrhagic events, thrombocytopenia, use of NSAIDs and congenital or acquired haemorrhagic syndromes. Bleeding complications can occur as a result of anticoagulation therapy, thrombocytopenia or, rarely, due to Lupus anticoagulant-hypoprothrombinemia syndrome [133, 134].
Catastrophic APS (CAPS) is a rare life-threatening syndrome of unknown aetiology characterised by a rapid-onset thrombotic microangiopathy involving at least three organs associated with the confirmed presence of aPL . Although it is not possible to predict the risk of this rare event, the most common precipitating factors are infections, surgery, withdrawal or improper use of anticoagulants, obstetric complications, neoplasia and disease flares in the case of concomitant SLE . All of these precipitating factors, together with the pathogenic effect of aPL, in particular anti-β2glycoprotein, may induce a generalised inflammatory response, characterised by the massive activation of a cytokine network with consequent endothelial cell activation and uncontrolled coagulation . The treatment of CAPS is not standardised, due to the rarity of the disease and the consequent lack of sound evidence. Current practice is based on literature reports suggesting that prompt administration of anticoagulants, corticosteroids, plasma exchange and intravenous immunoglobulins can prolong survival in these patients [136, 137]. Recent evidence suggests that other agents such as rituximab and eculizumab, although considered second-line treatments, could also be effective [138, 139].
The perioperative management of patients with IRD undergoing major orthopaedic surgery is challenging due to the limited available data on which to base recommendations. These patients are at high risk of infection, thrombosis and disease flare around the time of surgery, so it is essential that medical and surgical teams devise a plan to minimise patient risk. Hence, it is crucial that a multidisciplinary approach envisages orthopaedics, rheumatologists and anesthesiologists to provide a preoperative counselling with appropriate risk assessment, a close perioperative observation and a post-operative prevention plan in order to minimise perioperative risk in this group of patients. We hope this review provides a basis that enables physicians to risk stratify patients, provide personalised strategies, and address perioperative complications.
No funding or sponsorship was received for this study or publication of this article.
All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship for this article, take responsibility for the integrity of the work as a whole, and have given their approval for this version to be published.
Roberta Gualtierotti, Marco Parisi and Francesca Ingegnoli have nothing to disclose.
Compliance with ethics guidelines
This article is based on previously conducted studies and does not contain any studies with human participants or animals performed by any of the authors.
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