Effect of an Immersive Preoperative Virtual Reality Experience on Patient Reported Outcomes: A Randomized Controlled Trial

The Effectiveness of Virtual and Augmented Reality in Surgical Pain Management: A Systematic Review of Randomized Controlled Trials

BACKGROUND

Satisfactory management of postoperative pain remains challenging. Nonpharmacological modalities such as virtual and augmented reality (VR/AR) offer potential benefits and are becoming increasingly popular. This systematic review evaluates the effectiveness and safety of VR/AR interventions on postoperative pain and recovery.

METHODS

MEDLINE, Embase, CINAHL, Web of Science, and CENTRAL databases were searched from inception to July 27, 2023, for randomized controlled trials (RCTs), published in English, evaluating the use of VR/AR interventions for surgical pain relief. Study selection and data extraction were performed by pairs of reviewers independently and in duplicate, and potential risk of bias was determined using the Risk of Bias-version 2 (RoB 2) tool. Our outcomes included pain relief, reduction of anxiety, satisfaction, and adverse effects. Due to substantial heterogeneity, a narrative synthesis without meta-analysis was performed.

RESULTS

We included 35 trials among 2257 citations, categorized as surgery (n = 12), minor procedures (n = 15), and postoperative physiotherapy (n = 8). Surgical group included various surgeries, with 11 using immersive VR predominantly in the postoperative period, and most reporting no differences in pain, but potential for reduced anxiety and sedation requirements. In the minor procedures group, most studies reported decreased pain and anxiety during the procedural performance. Two studies reported increased heart rate, while 2 others reported better hemodynamic stability. Home-based AR physiotherapy achieved (n = 6) similar pain and functional outcomes after knee replacement, with 1 large study (n = 306) reporting reduction of mean costs by $2745 for provision of 12 weeks physiotherapy. There were some concerns around potential bias for most studies, as the nature of interventions make it challenging to blind assessors and participants. No important adverse effects were noted using VR/AR technology.

CONCLUSIONS

Evidence from RCTs indicates that the use of immersive VR during minor procedures may reduce procedural pain, decrease anxiety, and improve satisfaction. However, small studies, inconsistent effect, and variation in the application of interventions are important limitations. Evidence to support the application of AR/VR for major surgeries is limited and needs to be further investigated. Use of home-based physiotherapy with AR likely has economic advantages, and facilitates virtual care for appropriate patients who can access and use the technology safely.

The impact of virtual reality exposure on anxiety and pain levels in pediatric patients: A systematic review and meta-analysis

PROBLEM

Virtual reality (VR) is used as a novel intervention technique to alleviate uncomfortable experiences such as anxiety and pain in children. Recently, VR distraction has gained prominence in pediatric medical procedures. However, no studies have yet conducted a further quantitative analysis of the intervention effects of virtual reality exposure (VRE). This systematic review aims to analyse the effect of VRE on anxiety and pain levels in paediatric patients undergoing medical procedures.

ELIGIBILITY CRITERIA

Relevant studies were searched from four databases, including PubMed, Cochrane Library, Embase, and Web of Science. This systematic review has been registered in the International Prospective Register of Systematic Reviews (PROSPERO).

RESULTS

The meta-analysis incorporated a total of 11 articles, encompassing 1,099 pediatric patients. The results showed that VRE relieved children's anxiety [SMD = -0.61, 95% CI (-0.93, -0.28), p < 0.001], but there was no significant difference in alleviating pain in children [SMD = -1.48, 95% CI (-3.40, 0.44), p = 0.131].

CONCLUSIONS

The results suggest that VRE is effective in reducing children's anxiety during medical procedures. However, 7 of the 11 original studies included in this review were from the same research project, which may increase the risk of reporting bias. Also, more high-quality studies are needed in the future to verify its effectiveness for pain levels.

IMPLICATIONS

VRE can help children become familiar with the medical environment, overcome anxiety and fear, and learn about medical procedures in advance. This can enhance their cooperation during medical process, leading to a more positive medical experience.

The Effect of Immersive Virtual Reality Application on Anxiety, Pain, and Parental Satisfaction in the Perioperative Process of Children: A Randomized Controlled Trial

PURPOSE

To determine the effects of virtual reality (VR) interventions on pre- and postoperative anxiety, pain, and parental satisfaction in children.

DESIGN

A randomized controlled trial.

METHODS

Children undergoing surgery for the first time and their families were randomly assigned to the control or VR group. The control group received conventional education regarding the perioperative process. The VR group watched a VR video illustrating the operating theater and explaining the perioperative process. The primary outcome of interest was preoperative anxiety, evaluated using the Children's State Anxiety Scale. Secondary outcomes of interest included postoperative pain ratings using the Wong-Baker Faces Pain Rating Scale and parental satisfaction scores using the PedsQL Health Care Satisfaction Scale.

RESULTS

The analysis included 70 children and their families (control = 35, VR = 35). Demographic characteristics were similar between the groups. Children in the VR group had significantly lower preoperative anxiety scores (p < .001) and postoperative anxiety scores (p = .010) compared to the control group. Parental satisfaction scores were significantly higher in the VR group (p < .001). The VR group had lower postoperative pain scores, but this difference was not statistically significant (p > .05).

CONCLUSIONS

Preoperative education using VR tours may reduce preoperative anxiety and increase parental satisfaction. However, the lack of baseline measurements limits our ability to definitively attribute these effects to the VR intervention. Despite this, VR is a promising nonpharmacological strategy for managing children's anxiety and increasing parental satisfaction.

CLINICAL IMPLICATIONS

Virtual reality interventions offer an effective nonpharmacological strategy for perioperatively managing children's anxiety and increasing parental satisfaction.

No pain relief by virtual reality during hysterosalpingography (HSG): results from a randomized controlled trial

STUDY QUESTION

Is virtual reality (VR) an effective non-pharmacological tool to reduce procedural pain during hysterosalpingography (HSG)?

SUMMARY ANSWER

An HSG with VR does not reduce procedural pain scores compared to an HSG without VR.

WHAT IS KNOWN ALREADY

An HSG is often experienced as painful and uncomfortable. VR has been proven successful to reduce acute procedural pain during a variety of medical procedures and interventions.

STUDY DESIGN, SIZE, DURATION

We performed a two-centre open-label randomized controlled trial between January 2021 and October 2022.

PARTICIPANTS/MATERIALS, SETTING, METHODS

Women scheduled for HSG as part of their infertility work-up were screened for participation. After informed consent, women were randomized between HSG with or without VR. Due to the nature of the intervention, the study was not blinded. VR was administered by a head-mounted device displaying nature movies and/or relaxation exercises. The primary endpoint was procedural pain measured using VAS (scale 0.0-10.0 cm). Procedural pain was divided into overall pain score and peak pain score during the procedure. It was measured immediately after HSG. Secondary endpoints included patient satisfaction, VR preferences, and adverse effects of VR.

MAIN RESULTS AND THE ROLE OF CHANCE

We included a total of 134 women, 69 to the intervention group (HSG with VR) and 65 to the control group (HSG without VR). The mean VAS for peak pain was 6.80 cm (SD 2.25) in the intervention group versus 6.60 cm (SD 2.40) in the control group (mean difference 0.28 (95% CI -0.57, 1.12), P = 0.52). The mean VAS for overall pain was 5.00 cm (SD 2.10) in the intervention group versus 4.90 cm (SD 2.13) in the control group (mean difference 0.06 (95% CI -0.71, 0.84), P = 0.88). The expectation that VR would be a good distraction from pain during HSG was correlated with both overall and peak pain scores. When correcting for this expectation, we found that women in the intervention group reported significantly higher scores, both in peak (adjusted MD 0.58 (95% CI -0.81, 1.97), P = 0.021) and overall (adjusted MD 0.43 (95% CI -0.84, 1.71), P = 0.013) pain, compared to the control group. There were no differences in the prevalence of symptoms that were considered as adverse effects of VR.

LIMITATIONS, REASONS FOR CAUTION

The study was not blinded. Reasons for declining participation in the study were anxiety or wanting full control during HSG, which might have created selection bias. The distraction score possibly indicates that the level of VR immersiveness was not optimal due to the lack of sound and/or the type of VR applications. Future studies should investigate whether more immersive or interactive VR applications could decrease procedural pain scores during HSG.

WIDER IMPLICATIONS OF THE FINDINGS

Since VR does not reduce procedural pain, this additional tool should not be used during HSG.

STUDY FUNDING/COMPETING INTEREST(S)

There was no external funding for this study. KR and AvH report receiving a travel grant from Merck outside the scope of this study. BM is supported by a National Health and Medical Research Council (NHMRC) investigator grant (GNT1176437) and BM reports consultancy for Merck, Organon, and Norgine and travel and research funding from Merck. BM holds stock for ObsEva. CL reports receiving research grants from Merck, and Ferring. KD and VM report receiving travel and speaker's fees from Guerbet and research grants from Guerbet. VM also reports research grants from Merck and Ferring. The remaining authors have nothing to declare.

TRIAL REGISTRATION NUMBER

The trial is registered prospectively in the Netherlands Trial Register (trialregister.nl registration number NL9203, currently accessible on trialsearch.who.int).

TRIAL REGISTRATION DATE

16-01-2021.

DATE OF FIRST PATIENT’S ENROLMENT

The first participant was enrolled on 19 January 2021.

Virtual reality exposure reduce acute postoperative pain in female patients undergoing laparoscopic gynecology surgery: A Randomized Control Trial (RCT) study

STUDY OBJECTIVE

Few studies have focused on the effect of virtual reality (VR) exposure on postoperative acute pain in adult female patients undergoing gynecology surgery.

DESIGN

A randomized control trial (RCT) study.

SETTING

At Beijing Fuxing Hospital.

PATIENTS

115 patients aged between 20 and 60 years, American Society of Anesthesiologists (ASA) physical status I - II were consecutively enrolled and randomly divided into VR group (n = 58) or control group (n = 57).

INTERVENTIONS

Patients in the VR group received 15 min of VR video viewing before surgery.

MEASUREMENTS

The primary outcome was acute postoperative pain at 8 h which was measured by the Visual Analogue Scale (VAS) scores. The secondary outcomes including the use of analgesic drugs, the incidence of moderate pain and postoperative recovery which were recorded 24 h after surgery. The Hospital Anxiety and Depression Scale (HADS) was also used to evaluate patients' emotional status before surgery.

MAIN RESULTS

The VAS scores at 30 min [2 (1,2) vs. 3 (2,3)], 2 h [2 (2,3) vs. 4 (3,4)], 4 h [3 (2,4) vs. 4 (4,5)], 8 h [3 (2,4) vs. 4 (4,5)], 12 h [2 (2,3) vs. 4 (3,4)], 24 h [1 (1,2) vs. 3 (2,3)] after surgery. Generalized estimation equation (GEE) indicated that VR intervention was negatively correlated with postoperative VAS values (β = -0.830, S.E = 0.199, 95%CI (-1.220,-0.439), Wald χ2 = 17.359, p<0.05), in the meanwhile, VR also lower the incidence of moderate pain (VAS > 4) at 8 h postoperatively (12.1% vs 31.0%, p = 0.013). However, the 24 h tramadol usage remained unchanged. Patients in the VR group had better sleep quality (6.33 ± 2.3 vs. 4.12 ± 2.5, p < 0.001) and lower incidence of nausea (43.1% vs. 63.2%, p < 0.05), dizziness (0% vs. 14.0%, p < 0.05), and headache (12.1% vs. 29.8%, p < 0.05). VR could reduce the median HADS scores (9.81 ± 6.1 vs 3.14 ± 3.9, p < 0.001) and blood pressure preoperatively.

CONCLUSIONS

VR intervention can reduce acute postoperative pain with better postoperative recovery and lower preoperative anxiety level in adult female patients undergoing laparoscopic gynecology surgery.

An Immersive Virtual Reality Intervention for Preoperative Anxiety and Distress Among Adults Undergoing Oncological Surgery: Protocol for a 3-Phase Development and Feasibility Trial

BACKGROUND

Preoperative state anxiety (PSA) is distress and anxiety directly associated with perioperative events. PSA is associated with negative postoperative outcomes such as longer hospital length of stay, increased pain and opioid use, and higher rates of rehospitalization. Psychological prehabilitation, such as education, exposure to hospital environments, and relaxation strategies, has been shown to mitigate PSA; however, there are limited skilled personnel to deliver such interventions in clinical practice. Immersive virtual reality (VR) has the potential for greater accessibility and enhanced integration into an immersive and interactive experience. VR is rarely used in the preoperative setting, but similar forms of stress inoculation training involving exposure to stressful events have improved psychological preparation in contexts such as military deployment.

OBJECTIVE

This study seeks to develop and investigate a targeted PSA intervention in patients undergoing oncological surgery using a single preoperative VR exposure. The primary objectives are to (1) develop a novel VR program for patients undergoing oncological surgery with general anesthesia; (2) assess the feasibility, including acceptability, of a single exposure to this intervention; (3) assess the feasibility, including acceptability, of outcome measures of PSA; and (4) use these results to refine the VR content and outcome measures for a larger trial. A secondary objective is to preliminarily assess the clinical utility of the intervention for PSA.

METHODS

This study comprises 3 phases. Phase 1 (completed) involved the development of a VR prototype targeting PSA, using multidisciplinary iterative input. Phase 2 (data collection completed) involves examining the feasibility aspects of the VR intervention. This randomized feasibility trial involves assessing the novel VR preoperative intervention compared to a VR control (ie, nature trek) condition and a treatment-as-usual group among patients undergoing breast cancer surgery. Phase 3 will involve refining the prototype based on feasibility findings and input from people with lived experience for a future clinical trial, using focus groups with participants from phase 2.

RESULTS

This study was funded in March 2019. Phase 1 was completed in April 2020. Phase 2 data collection was completed in January 2024 and data analysis is ongoing. Focus groups were completed in February 2024. Both the feasibility study and focus groups will contribute to further refinement of the initial VR prototype (phase 3), with the final simulation to be completed by mid-2024.

CONCLUSIONS

The findings from this work will contribute to the limited body of research examining feasible and broadly accessible interventions for PSA. Knowledge gained from this research will contribute to the final development of a novel VR intervention to be tested in a large population of patients with cancer before surgery in a randomized clinical trial.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04544618; https://www.clinicaltrials.gov/study/NCT04544618.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/55692.

Evolution of the meta-neurosurgeon: A systematic review of the current technical capabilities, limitations, and applications of augmented reality in neurosurgery

Background

Augmented reality (AR) applications in neurosurgery have expanded over the past decade with the introduction of headset-based platforms. Many studies have focused on either preoperative planning to tailor the approach to the patient's anatomy and pathology or intraoperative surgical navigation, primarily realized as AR navigation through microscope oculars. Additional efforts have been made to validate AR in trainee and patient education and to investigate novel surgical approaches. Our objective was to provide a systematic overview of AR in neurosurgery, provide current limitations of this technology, as well as highlight several applications of AR in neurosurgery.

Methods

We performed a literature search in PubMed/Medline to identify papers that addressed the use of AR in neurosurgery. The authors screened three hundred and seventy-five papers, and 57 papers were selected, analyzed, and included in this systematic review.

Results

AR has made significant inroads in neurosurgery, particularly in neuronavigation. In spinal neurosurgery, this primarily has been used for pedicle screw placement. AR-based neuronavigation also has significant applications in cranial neurosurgery, including neurovascular, neurosurgical oncology, and skull base neurosurgery. Other potential applications include operating room streamlining, trainee and patient education, and telecommunications.

Conclusion

AR has already made a significant impact in neurosurgery in the above domains and has the potential to be a paradigm-altering technology. Future development in AR should focus on both validating these applications and extending the role of AR.

Innovations in Spine Surgery: A Narrative Review of Current Integrative Technologies

Neurosurgical technologies have become increasingly more adaptive, featuring real-time and patient-specific guidance in preoperative, intraoperative, and postoperative settings. This review offers insight into how these integrative innovations compare with conventional approaches in spine surgery, focusing on machine learning (ML), artificial intelligence, augmented reality and virtual reality, and spinal navigation systems. Data on technology applications, diagnostic and procedural accuracy, intraoperative times, radiation exposures, postoperative outcomes, and costs were extracted and compared with conventional methods to assess their advantages and limitations. Preoperatively, augmented reality and virtual reality have applications in surgical training and planning that are more immersive, case specific, and risk-free and have been shown to enhance accuracy and reduce complications. ML algorithms have demonstrated high accuracy in predicting surgical candidacy (up to 92.1%) and tailoring personalized treatments based on patient-specific variables. Intraoperatively, advantages include more accurate pedicle screw insertion (96%-99% with ML), enhanced visualization, reduced radiation exposure (49 μSv with O-arm navigation vs. 556 μSv with fluoroscopy), increased efficiency, and potential for fewer intraoperative complications compared with conventional approaches. Postoperatively, certain ML and artificial intelligence models have outperformed conventional methods in predicting all postoperative complications of >6000 patients as well as predicting variables contributing to in-hospital and 90-day mortality. However, applying these technologies comes with limitations, such as longer operative times (up to 35.6% longer) with navigation, dependency on datasets, costs, accessibility, steep learning curve, and inherent software malfunctions. As these technologies advance, continuing to assess their efficacy and limitations will be crucial to their successful integration within spine surgery.

A brief virtual reality intervention for pre-operative anxiety in adults

OBJECTIVE

Virtual reality (VR) is a promising non-pharmacologic tool for managing health care anxiety. We assessed the feasibility and acceptability of a pre-operative VR intervention by adult patients and medical staff and measured anxiety in adult patients pre- and post-VR intervention.

STUDY DESIGN

We recruited 30 patients scheduled to undergo oral surgery and 8 medical staff as participants. The patients completed a verbal demographic survey and rated their anxiety before the VR intervention and at 1 minute and 2 minutes post-intervention. We administered the Acceptability of Intervention Measure to the patients to measure their perceptions of the VR intervention and the Feasibility of Intervention Measure to the medical staff to assess their perception of VR implementation. We performed an analysis of variance to compare pre-operative anxiety over time and assess demographic differences.

RESULTS

The patients showed high and consistent acceptability of the pre-operative use of VR among patients, but acceptability varied among medical staff. The patients experienced a statistically significant reduction of pre-operative anxiety (P = .003).

CONCLUSION

A brief VR pre-intervention is highly accepted by and very beneficial for patients undergoing oral surgery, positively affecting anxiety reduction. The perception of VR by health care providers needs to be explored to increase acceptability.

Use of Perioperative Virtual Reality Experiences on Anxiety and Pain: A Randomized Comparative Trial

OBJECTIVE

To evaluate the effect of different virtual reality (VR) experiences on perioperative anxiety and pain among patients undergoing head and neck surgery.

METHODS

Prospective, randomized, comparative trial among patients undergoing outpatient head and neck surgery from December 2021 to April 2022 at a single academic institution. Group 1 utilized a preoperative VR gaming experience and a postoperative VR mindfulness experience, while Group 2 utilized the same interventions in the reverse order. Anxiety and pain were measured using visual analog scales (VAS). Primary outcomes were changes in post-intervention anxiety and pain. Secondary outcomes included vital sign changes and subjective patient experiences using a 5-point Likert scale.

RESULTS

There were 32 patients randomized for inclusion, with 16 patients per group. The majority of patients were female (65.6%) and mean (standard deviation) age was 47.3 (16.7) years. After outlier exclusion, there were no differences in post-intervention preoperative anxiety reduction (Group 1 vs. Group 2, median [IQR]: -12.0 [15] vs. -10.5 [13], p = 0.62). There were minor differences in vital sign changes (p < 0.05). Among the 10 patients in Group 1 and 12 patients in Group 2 who completed postoperative VR use, there were no differences in post-intervention pain reduction (-8.5 [22.3] vs. -7.5 [19.3], p = 0.95) or vital sign changes (p > 0.05). There were no differences in questionnaire responses, with high satisfaction in both groups (p > 0.05). No adverse events encountered.

CONCLUSIONS

Use of different VR experiences among patients undergoing outpatient head and neck surgery appears associated with similar reductions in perioperative anxiety and pain.

LEVEL OF EVIDENCE

2 Laryngoscope, 134:1197-1202, 2024.

Effect of Virtual Reality Glasses Application on Pain, Anxiety, and Patient Satisfaction During a Transrectal Prostate Biopsy: A Randomized Controlled Trial

BACKGROUND

This study aims to determine the effect of virtual reality glasses application on pain, anxiety, and patient satisfaction during a transrectal prostate biopsy.

MATERIALS AND METHODS

The study was conducted with pre-tests, post-tests, and a control group, using a randomized controlled experimental research design. A total of 70 patients (35 in the intervention group and 35 in the control group) were included in the study. The intervention group watched a video with virtual reality glasses during the biopsy process. A Descriptive Information Form, State-Trait Anxiety Inventory (STAI-I, STAI-II), Scale of Patient Perception of Hospital Experience with Nursing Care (PPHEN), and Visual Analog Scale for Pain (VAS) were used for data collection. To evaluate the data, numbers, percentages, mean, standard deviation, chi-square, paired sample t test, independent samples t test, regression analysis, and Cronbach's alpha Reliability Coefficient were used.

RESULTS

There was no significant difference between the groups in terms of descriptive and clinical characteristics (p > .05). The mean VAS and STAI post-test scores of the patients in the intervention group were lower than the control group, and the difference between them was statistically significant (p < .05). The mean PPHEN post-test scores of the patients in the intervention group were significantly higher than those in the control group (p < .05).

CONCLUSION

The application of virtual reality glasses during a transrectal prostate biopsy significantly reduced the level of pain and anxiety and increased patient satisfaction.

Virtual, Augmented, and Mixed Reality Applications for Surgical Rehearsal, Operative Execution, and Patient Education in Spine Surgery: A Scoping Review

Background and Objectives: Advances in virtual reality (VR), augmented reality (AR), and mixed reality (MR) technologies have resulted in their increased application across many medical specialties. VR's main application has been for teaching and preparatory roles, while AR has been mostly used as a surgical adjunct. The objective of this study is to discuss the various applications and prospects for VR, AR, and MR specifically as they relate to spine surgery. Materials and Methods: A systematic review was conducted to examine the current applications of VR, AR, and MR with a focus on spine surgery. A literature search of two electronic databases (PubMed and Scopus) was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The study quality was assessed using the MERSQI score for educational research studies, QUACS for cadaveric studies, and the JBI critical appraisal tools for clinical studies. Results: A total of 228 articles were identified in the primary literature review. Following title/abstract screening and full-text review, 46 articles were included in the review. These articles comprised nine studies performed in artificial models, nine cadaveric studies, four clinical case studies, nineteen clinical case series, one clinical case-control study, and four clinical parallel control studies. Teaching applications utilizing holographic overlays are the most intensively studied aspect of AR/VR; the most simulated surgical procedure is pedicle screw placement. Conclusions: VR provides a reproducible and robust medium for surgical training through surgical simulations and for patient education through various platforms. Existing AR/MR platforms enhance the accuracy and precision of spine surgeries and show promise as a surgical adjunct.

Preoperative Virtual Reality to Expose Patients With Breast Cancer to the Operating Room Environment: Feasibility and Pilot Case Series Study

BACKGROUND

Clinically elevated preoperative distress and anxiety are common among patients undergoing cancer surgery. Preoperative interventions have been developed to mitigate this distress and anxiety but are inconsistent in efficacy and feasibility for broad implementation.

OBJECTIVE

This preliminary pilot study aims to assess the feasibility and utility of a newly developed virtual reality (VR) intervention to expose patients awaiting breast cancer surgery to the operating room environment and a simulation of anesthetic induction.

METHODS

Patients undergoing breast cancer surgery (N=7) were assigned to the VR intervention or control (treatment as usual) group and completed self-report measures of distress and anxiety before surgery, on the day of surgery, and after surgery (5 and 30 d postoperatively). Those in the intervention group trialed the VR simulation 1 to 2 weeks preoperatively and provided qualitative and quantitative feedback. We assessed the feasibility of recruitment capability and study design and evaluated participants' impressions of the intervention using self-report rating scales and open-ended questions. We also descriptively examined distress and anxiety levels throughout the duration of the study.

RESULTS

Recruitment occurred between December 2021 and December 2022 and progressed slowly (rate: 1 participant/7 wk on average; some hesitancy because of stress and being overwhelmed). All participants who consented to participate completed the entire study. All participants were female and aged 56 (SD 10.56) years on average. In total, 57% (4/7) of the participants were assigned to the intervention group. On average, intervention participants spent 12 minutes engaged in the VR simulation. In general, the intervention was rated favorably (eg, clear information, enjoyable, and attractive presentation; mean% agreement 95.00-96.25, SD 4.79-10.00) and as helpful (mean% agreement 87.50, SD 25.00). Participants described the intervention as realistic (eg, "It was realistic to my past surgical experiences"), impacting their degree of preparedness and expectations for surgery (eg, "The sounds and sights and procedures give you a test run; they prepare you for the actual day"), and having a calming or relaxing effect (eg, "You feel more relaxed for the surgery").

CONCLUSIONS

This preoperative VR intervention demonstrated preliminary feasibility among a sample of patients undergoing breast cancer surgery. Results and participant feedback will inform modifications to the VR intervention and the study design of a large-scale randomized controlled trial to examine the efficacy of this intervention.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04544618; https://clinicaltrials.gov/study/NCT04544618.

A scenario-based web app to facilitate patient education in lung tumor patients undergoing video-assisted thoracoscopic surgery: Development and usability testing

Background

Patient education (PE) is essential for improving patients' knowledge, anxiety, and satisfaction, and supporting their postoperative recovery. However, the advantages of video-assisted thoracoscopic surgery (VATS)-smaller incisions and faster recovery-can result in shorter hospital stays, making PE more challenging to implement effectively. Multimedia PE can potentially enhance PE, but its effectiveness for patients undergoing VATS is unclear.

Objective

This study developed a scenario-based PE web app for lung tumor patients undergoing VATS (SPE-VATS) to facilitate the PE process and evaluated its usability through a clinical trial.

Methods

The SPE-VATS provided the experimental group (EG: 32 participants) with interactive scenario, query guidance, diagnostic analysis, experience sharing, and active reminder, while the control group (CG: 32 participants) used pamphlets and videos. The usability of SPE-VATS in terms of postoperative anxiety reduction and patient satisfaction with the app was evaluated using self-reported questionnaires based on the state-trait anxiety inventory, technology acceptance model, system usability scale, and task load index.

Results

There was no statistically significant difference in postoperative anxiety reduction between the EG and CG, possibly because 90% of the participants underwent a low-risk surgical type, and VATS is known to be advantageous in alleviating surgical anxiety. However, females and higher educated EG participants showed a non-significant but favorable reduction than their CG counterparts. Moreover, the EG was highly satisfied with the app (rated 4.2 to 4.4 out of 5.0), with no significant gender and education level difference. They particularly valued the interactive scenario, experience sharing, and diagnostic analysis features of SPE-VATS.

Conclusions

The SPE-VATS demonstrated its usability and high patient satisfaction, particularly for female and higher educated patients. Low-risk patient predominance and VATS's advantages may explain non-significant postoperative anxiety reduction, warranting further studies on high-risk patients to evaluate the impact of SPE-VATS on clinical practice.

Crossover design in triage education: the effectiveness of simulated interactive vs. routine training on student nurses' performance in a disaster situation

INTRODUCTION

This study investigates the effectiveness of incorporating simulated interactive guidelines in nursing students' performance during disaster situations, compared to routine training.

METHOD

This study was a crossover design with pre-and post-tests for two groups. Each group consisted of 60 students selected using the census method. SIG and routine (Face-to-Face) training sessions were conducted as a crossover design. Triage knowledge questionnaires were used in the pretest to assess triage knowledge. An OSCE test was administered in the posttest to assess student performance, followed by a triage skills questionnaire. Both questionnaires were highly reliable, as indicated by Cronbach's alpha coefficients (0.9 and 0.95, respectively). Statistical analysis was performed using SPSS version 26 software at a significance level 0.05.

RESULT

The chi-square test showed that the two groups were homogeneous regarding age. Regarding knowledge level, both groups were homogeneous before the intervention (P = 0.99). Nevertheless, the results of the OSCE test showed that the students in Group A had a higher level of skill than the students in Group B (93% versus 70%). Also, 18% of the students in group B had low skills.

DISCUSSION

The study found that student outcomes improved in both groups receiving SIG, suggesting that interaction and simulation improve learning. However, gamification is an ideal precursor to learning and not a substitute for education. Therefore, gamification should not be used as a stand-alone teaching method.

CONCLUSIONS

The crossover study found that simulators and games should not be considered stand-alone teaching methods but can contribute to learning sustainability when used alongside instruction.

Virtual Reality for Preoperative Planning in Complex Surgical Oncology: A Single-Center Experience

INTRODUCTION

Virtual reality models (VRM) are three-dimensional (3D) simulations of two-dimensional (2D) images, creating a more accurate mental representation of patient-specific anatomy.

METHODS

Patients were retrospectively identified who underwent complex oncologic resections whose operations differed from preoperative plans between April 2018 and April 2019. Virtual reality modeling was performed based on preoperative 2D images to assess feasibility of use of this technology to create models. Preoperative plans made based upon 2D imaging versus VRM were compared to the final operations performed. Once the use of VRM to create preoperative plans was deemed feasible, individuals undergoing complex oncologic resections whose operative plans were difficult to define preoperatively were enrolled prospectively from July 2019 to December 2021. Preoperative plans made based upon 2D imaging and VRM by both the operating surgeon and a consulting surgeon were compared to the operation performed. Confidence in each operative plan was also measured.

RESULTS

Twenty patients were identified, seven retrospective and 13 prospective, with tumors of the liver, pancreas, retroperitoneum, stomach, and soft tissue. Retrospectively, VRM were unable to be created in one patient due to a poor quality 2D image; the remainder (86%) were successfully able to be created and examined. Virtual reality modeling more clearly defined the extent of resection in 50% of successful cases. Prospectively, all VRM were successfully performed. The concordance of the operative plan with VRM was higher than with 2D imaging (92% versus 54% for the operating surgeon and 69% versus 23% for the consulting surgeon). Confidence in the operative plan after VRM compared to 2D imaging also increased for both surgeons (by 15% and 8% for the operating and consulting surgeons, respectively).

CONCLUSIONS

Virtual reality modeling is feasible and may improve preoperative planning compared to 2D imaging. Further investigation is warranted.

The use of e-consent in surgery and application to neurosurgery: a systematic review and meta-analysis

INTRODUCTION

The integration of novel electronic informed consent platforms in healthcare has undergone significant growth over the last decade. Adoption of uniform, accessible, and robust electronic online consenting applications is likely to enhance the informed consent process and improve the patient experience and has the potential to reduce medico-legal ramifications of inadequate consent. A systematic review and meta-analysis was conducted to evaluate the utility of novel electronic means of informed consent in surgical patients and discuss its application to neurosurgical cohorts.

METHODS

A review of randomised controlled trials, non-randomised studies of health interventions, and single group pre-post design studies in accordance with the PRISMA statement. Random effects modelling was used to estimate pooled proportions of study outcomes. Patient satisfaction with the informed consent process and patients' gain in knowledge were compared for electronic technologies versus non-electronic instruments. A sub-group analysis was conducted to compare the utility of electronic technologies in neurosurgical cohorts relative to other surgical patients in the context of patient satisfaction and knowledge gain.

RESULTS

Of 1042 screened abstracts, 63 studies were included: 44 randomised controlled trials (n = 4985), 4 non-randomised studies of health interventions (n = 387), and 15 single group pre-post design studies (n = 872). Meta-analysis showed that electronic technologies significantly enhanced patient satisfaction with the informed consent process (P < 0.00001) and patients' gain in knowledge (P < 0.00001) compared to standard non-electronic practices. Sub-group analysis demonstrated that neurosurgical patient knowledge was significantly enhanced with electronic technologies when compared to other surgical patients (P = 0.009), but there was no difference in patient satisfaction between neurosurgical cohorts and other surgical patients with respect to electronic technologies (P = 0.78).

CONCLUSIONS

Novel electronic technologies can enhance patient satisfaction and increase patients' gain in knowledge of their surgical procedures. Electronic patient education tools can significantly enhance patient knowledge for neurosurgical patients. If used appropriately, these modalities can shorten and/or improve the consent discussion, streamlining the surgical process and improving satisfaction for neurosurgical patients.

Virtual Reality-Based Intervention to Reduce Preoperative Anxiety in Adults Undergoing Elective Surgery: A Randomized Clinical Trial

IMPORTANCE

Preoperative anxiety is common among adult patients undergoing elective surgery and is associated with negative outcomes. Virtual reality (VR)-based interventions have been considered simpler, safer, and more effective for reducing anxiety in patients undergoing surgery than conventional care.

OBJECTIVE

To examine the effectiveness of a VR-based intervention with preoperative education in reducing preoperative anxiety among adult patients undergoing elective surgery.

DESIGN, SETTING, AND PARTICIPANTS

An assessor-blinded prospective randomized clinical trial was conducted to recruit adult patients aged 18 years or older who were scheduled for their first elective surgery procedure under general anesthesia within the next 2 to 4 weeks at a preanesthesia assessment clinic in Hong Kong from July to December 2022.

INTERVENTIONS

Participants were randomly assigned to either an intervention group (an 8-minute immersive 360° VR video tour in the operating theater via a head-mounted display console) or a control group (standard care).

MAIN OUTCOMES AND MEASURES

The primary outcome of preoperative anxiety was measured using the Amsterdam Preoperative Anxiety and Information Scale (range, 6-30; higher scores indicate greater anxiety), and the secondary outcomes (ie, stress, preparedness, and pain) were assessed by Visual Analog Scale at 3 time points: baseline at beginning of clinical session (T0), at the end of the clinical session immediately after the intervention (T1), and before the surgery (T2). Pain, satisfaction levels, and postoperative length of stay were evaluated after the surgery (T3). Simulation sickness was assessed after the intervention by use of the Simulation Sickness Questionnaire. A generalized estimating equations model was applied to compare changes in outcomes over time.

RESULTS

A total of 74 participants (mean [SD] age, 46.34 [14.52] years; 38 men [51.4%] and 36 women [48.6%]) were recruited and randomized to the control group (37 participants) and intervention group (37 participants). Compared with the control group, the VR-based intervention group showed significantly decreased preoperative anxiety at T1 (β, -5.46; 95% CI, -7.60 to -3.32; P < .001) and T2 (β, -5.57; 95% CI, -7.73 to -3.41; P < .001), lower stress at T1 (β, -10.68; 95% CI, -16.00 to -5.36; P < .001) and T2 (β, -5.16; 95% CI, -9.87 to -0.45; P = .03), and higher preparedness at T1 (β, 6.60; 95% CI, 0.97 to 12.19; P = .02). Satisfaction levels were significantly increased in the intervention group vs the control group (mean [SD] score, 81.35 [9.24] vs 65.28 [8.16]; difference, 16.07; 95% CI, 12.00 to 20.15; P < .001). No significant differences in pain and postoperative length of stay were found.

CONCLUSIONS AND RELEVANCE

The findings of this study suggest that a VR-based intervention is a feasible and effective way to reduce preoperative anxiety in adult patients undergoing elective surgery. Given the promising results of this study, further study in the form of large-scale, multicenter, randomized clinical trials with broader implementation is warranted.

TRIAL REGISTRATION

Chinese Clinical Trial Registry Identifier: ChiCTR2100051690.

Effectiveness of virtual reality in reducing preoperative anxiety in adults: A systematic review and meta-analysis

AIM

To evaluate the impact of a virtual reality (VR) intervention on adult patients' preoperative anxiety, heart rate, respiration rate and blood pressure.

DESIGN

A systematic review and meta-analysis of randomized controlled trials (RCTs).

DATA SOURCES

A librarian-designed search of the Cochrane Library, PubMed, Web of Science, EMBASE, CINAHL, CBM, CNKI and Wanfang databases was conducted to identify research studies in English or Chinese on RCTs from their inception to 31 May 2022. Detailed search strategies and the checklist are provieded in Supplementary files S1 and S2.

REVIEW METHODS

Two researchers independently screened eligible studies. The Cochrane Handbook for Systematic Reviews of Interventions was used to assess the risk of bias in the included studies. A fixed- or random-effects meta-analysis model was used to determine the pooled mean difference based on the results of the heterogeneity test.

RESULTS

This study included 11 articles with a total of 892 participants. VR distraction comprised five studies, and VR exposure consisted of six studies. The results indicated that VR could reduce preoperative anxiety in adult patients and VR exposure seems to be more effective. The results also indicated that VR intervention can effectively reduce patients' heart rate and blood pressure compared to traditional intervention methods, but had no significant effect on respiration rate.

CONCLUSION

VR technology could relieve preoperative anxiety in adult patients through distraction or exposure. More well-designed RCTs containing a wider range of surgical types are needed to verify our findings before we can make strong recommendations.

IMPACT

Our systematic review and meta-analysis show a positive effect of VR distraction and exposure interventions in reducing preoperative anxiety in adult patients. We suggest incorporating VR into preoperative procedures as an auxiliary way to reduce negative emotions in eligible patients.

NO PATIENT OR PUBLIC CONTRIBUTION

Our paper is a systematic review and meta-analysis and such details do not apply to our work.

Virtual reality psychological intervention helps reduce preoperative anxiety in patients undergoing carotid artery stenting: a single-blind randomized controlled trial

Objective

This study aimed to explore the effectiveness and applicability of a psychological intervention using virtual reality (VR) to reduce preoperative anxiety in patients undergoing carotid artery stenting (CAS).

Methods

A total of 114 patients aged 18-86 years who were scheduled to undergo CAS were randomized to the VR and control groups. Patients in the VR group used a VR headset to view a 16-min psychological intervention video, while those in the control group used a tablet for viewing. The primary assessment instrument was the State Anxiety Inventory (S-AI), which was given 20 min before and after the intervention and 24 h after surgery. Secondary assessment tools were the Self-efficacy for Managing Chronic Disease (SEMCD-6) scale, which was completed before the intervention and 24 h after the operation, a smart bracelet to assess sleep quality, monitored in the evening before the operation, and the VR Suitability and Satisfaction Questionnaire, completed 24 h after the operation.

Results

The two groups were similar in terms of demographic information, preintervention STAI scores and preintervention SEMCD-6 scores (p > 0.05). S-AI scores were lower in both groups after the intervention and surgery, and the scores of the VR group were lower than those of the control group (p = 0.036, p = 0.014). SEMCD-6 scores post-surgery had improved in both groups, but the VR group had significantly higher scores than the control group (p = 0.005). Smart bracelet measurements showed no significant differences in postintervention sleep quality between the two groups (p = 0.540). For satisfaction, the VR group scored higher in all aspects except scheduling. A total of 47 (85.45%) patients reported having a comfortable experience, and only 5 (9.09%) experienced mild adverse effects.

Conclusion

The use of a virtual reality psychological intervention was beneficial to reduce the anxiety of patients before CAS and improved their self-efficacy. As virtual reality devices evolve and demonstrate better comfort and safety, more comprehensive and in-depth research of the use of VR to reduce patient anxiety should be performed in the future.Clinical trial registration:https://www.chictr.org.cn/showproj.aspx?proj=186412, identifier ChiCTR2200066219.

Effects of virtual reality on preoperative anxiety in children: A systematic review and meta-analysis of randomised controlled trials

AIMS

To synthesise and evaluate the effectiveness of virtual reality interventions in preoperative children.

BACKGROUND

Children consider operations as a predictable threat and stressful event. Children's anxiety before an operation increases as the time draws closer. Children could understand the operating room environment and process before the operation using virtual reality, which may reduce their anxiety before an operation.

DESIGN

A systematic review and meta-analysis of randomised controlled trials following the Cochrane method were conducted.

METHOD

CINAHL, Cochrane Library, Embase, Joanna Briggs Institute, MEDLINE and PubMed databases were searched for randomised controlled trials published before February 2021. A random-effects model meta-analysis to calculate pooled prevalence and 95% confidence intervals was performed. Conduction of the review adheres to the PRISMA checklist.

RESULTS

Of 257 articles screened, six interventions involving 529 participants aged 4-12 years were included in the analysis. All study evidence levels were B2/Level 2, the quality was medium to high on the modified Jadad scale, with a low risk of bias. The results revealed that virtual reality significantly reduced preoperative anxiety in children (SMD: -0.91, 95% CI: -1.43 to -0.39, p = .0006). Furthermore, virtual reality significantly improved children's compliance with anaesthesia (SMD: 3.49, 95% CI: 1.32 to 9.21, p = .01).

CONCLUSION

Children who used virtual reality before an operation felt more familiar with the operating room environment and understood the preoperative preparation procedures. Virtual reality effectively reduced children's anxiety and improved their compliance with anaesthesia.

RELEVANCE TO CLINICAL PRACTICE

This systematic review and meta-analysis investigated the effect of virtual reality on preoperative anxiety in children and the findings supported its positive effects. The results could provide a reference for incorporating virtual reality into preoperative preparation guidelines.

Virtual Reality and Augmented Reality in Plastic and Craniomaxillofacial Surgery: A Scoping Review

Virtual reality (VR) and augmented reality (AR) have evolved since their introduction to medicine in the 1990s. More powerful software, the miniaturization of hardware, and greater accessibility and affordability enabled novel applications of such virtual tools in surgical practice. This scoping review aims to conduct a comprehensive analysis of the literature by including all articles between 2018 and 2021 pertaining to VR and AR and their use by plastic and craniofacial surgeons in a clinician-as-user, patient-specific manner. From the initial 1637 articles, 10 were eligible for final review. These discussed a variety of clinical applications: perforator flaps reconstruction, mastectomy reconstruction, lymphovenous anastomosis, metopic craniosynostosis, dermal filler injection, auricular reconstruction, facial vascularized composite allotransplantation, and facial artery mapping. More than half (60%) involved VR/AR use intraoperatively with the remainder (40%) examining preoperative use. The hardware used predominantly comprised HoloLens (40%) and smartphones (40%). In total, 9/10 Studies utilized an AR platform. This review found consensus that VR/AR in plastic and craniomaxillofacial surgery has been used to enhance surgeons' knowledge of patient-specific anatomy and potentially facilitated decreased intraoperative time via preoperative planning. However, further outcome-focused research is required to better establish the usability of this technology in everyday practice.

The Effects of Virtual Reality on Preoperative Anxiety in Patients Undergoing Colorectal and Abdominal Wall Surgery: A Randomized Controlled Trial

PURPOSE

The purpose of this study was to investigate the effects of a virtual reality (VR) application on preoperative anxiety (PA) in patients undergoing colorectal and abdominal wall surgery.

DESIGN

A prospective, parallel two-armed, randomized controlled trial.

METHODS

Eighty six patients were divided into the control group (n = 43) and in the experimental group (n = 43). The experimental group received a preoperative VR application for 10 minutes. The routine preoperative procedure used at the clinic was used for the patients in the control group. The anxiety level was assessed using the Anxiety Specific to Surgery Questionnaire (ASSQ) and measured with physiological responses to anxiety, such as changes in systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR), respiratory rate (RR), and peripheral oxygen saturation (SpO₂), before and after the VR application.

FINDINGS

The VR application reduced PA levels in the experimental group (P < .001) and changes in the SBP (P < .001), DBP (P < .001), HR (P < .001), RR (P = .041) and SpO₂(P = .019) values) compared to the levels in the control group.

CONCLUSIONS

VR applications can reduce psychological and physiological responses to PA in patients undergoing colorectal and abdominal wall surgery.

"Mixed Reality" in patient education prior to abdominal aortic aneurysm repair

Background: To investigate the usability of Mixed-Reality (MR) during patient education in patients scheduled for abdominal aortic aneurysm (AAA) repair. Patients and methods: Consecutive patients scheduled for elective AAA repair were block-randomized in either the Mixed-Reality group (MR group) or the conventional group (control group). Patients of both groups were educated about open and endovascular repair of their respective AAA. The MR group was educated using a head-mounted display (HMD) demonstrating a three-dimensional virtual reconstruction of the respective patient's vascular anatomy. The control group was educated using a conventional two-dimensional monitor to display the patient's vasculature. Outcomes were informational gain as well as patient satisfaction with the educational process. (DRKS-ID: DRKS00025174). Results: 50 patients were included with 25 patients in either group. Both groups demonstrated improvements in scores in the Informational Gain Questionnaire (IGQ) when comparing pre- and post-education scores. (MR group: 6.5 points (±1.8) versus 7.9 points (±1.5); Control group: 6.2 points (±1.8) versus 7.6 points (±1.6); p<0.01) There was no significant difference between the MR group and the control group either in informational gain (MR group: 1.4±1.8; Control group: 1.4±1.8; p=0.5) nor in patient satisfaction scores (MR group: mean 18.3 of maximum 21 points (±3.7); Control group: mean 17 of 21 points (±3.6); p=0.1) Multiple regression revealed no correlation between the use of MR and informational gain or patient satisfaction. Usability of the system was rated high, and patients' subjective assessment of MR was positive. Conclusions: The use of MR in patient education of AAA patients scheduled for elective repair is feasible. While patients reported positively on the use of MR in education, similar levels of informational gain and patient satisfaction can be achieved with MR and conventional methods.

Breast cancer patient experiences of perioperative distress and anxiety: A qualitative study

PURPOSE

Distress, often manifesting as anxiety, is common in breast cancer patients and becomes particularly elevated before surgery. This study investigated perspectives of those undergoing breast cancer surgery concerning what enhances and reduces distress and anxiety across the perioperative period (i.e., from diagnostic evaluation to recovery).

METHODS

The present study conducted qualitative semi-structured individual interviews with 15 adult breast cancer surgery patients within three months post-operation. Quantitative surveys provided background information (e.g., sociodemographics). Individual interviews were analyzed using thematic analysis. Quantitative data were analyzed descriptively.

RESULTS

Four main themes emerged from qualitative interviews: 1) "fighting an unknown" (sub-themes: uncertainty, health-related knowledge and experience); 2) "the cancer takes away the control" (sub-themes: "living at the whim of others", trusting care providers); 3) person at the centre of the patient (sub-themes: "managing life:" caregiving and work-related stressors, "everybody jumped in to help:" emotional and instrumental support); and 4) physical and emotional impacts of treatment (sub-themes: pain and impacted mobility, "losing a part of yourself"). Breast cancer patients' experiences of surgery-related distress and anxiety were contextualized by broader experiences of care.

CONCLUSIONS

Our findings illustrate the illness-specific experience of perioperative anxiety and distress in breast cancer patients and inform patient-centered care and intervention.

Relieving Anxiety Through Virtual Reality Prior to Endoscopic Procedures

PURPOSE

Endoscopic procedures can cause anxiety, which can lead to more uncomfortable, difficult, and incomplete procedures, in addition to greater use of sedative medication. Here, we investigate whether exposing patients to virtual reality (VR) prior to endoscopic procedures can reduce their anxiety levels.

MATERIALS AND METHODS

Forty patients at Gangnam Severance Hospital were enrolled and divided into the VR group and the control group. Patients in the VR group were exposed to VR prior to their procedure to alleviate anxiety. The primary data outcomes were State-Trait Anxiety Inventory (STAI), pain score, satisfaction with sedation, and satisfaction with the procedure.

RESULTS

The mean STAI-state and STAI-trait did not differ significantly between the control group and the VR group. While defining a high anxiety STAI score as ≥45 in an STAI-state, the proportion of patients with high anxiety at baseline was 35% and increased to 50% prior to the procedure in the control group. However, in the VR group, the proportion of patients with high anxiety at baseline was 60% and decreased to 50% prior to the procedure. The proportion changes of patients with high anxiety in the STAI-state exhibited a significant difference between the control and VR groups (p=0.007). Furthermore, patients' satisfaction with sedation was significantly greater in the VR group compared to the control group (p=0.017).

CONCLUSION

VR exposure may relieve patients' anxiety levels prior to endoscopic procedures, but further well-designed placebo-controlled studies are needed. VR, an inexpensive, easily available, and non-invasive method, also improved the satisfaction with sedation of endoscopic procedures.

Integrative Surgery: Embedding Complementary and Nonpharmacologic Therapies into Surgical Pain Management Strategies

There has been a growing interest in the use of complementary and alternative medicine in modern pain management strategies on behalf of both patients and clinicians. Nonpharmacologic modalities such as cryotherapy, acupuncture, music, and mind-body therapies have been shown to aid in symptom control and improve quality of life in patients suffering from acute and chronic pain, and there is a growing body of literature demonstrating their feasibility, acceptability, and efficacy in the perioperative period. Here, we provide a brief review of the current evidence supporting the use of complementary therapies within existing perioperative pain management strategies and highlight evidence-based protocols to facilitate implementation into modern surgical practice.

Virtual Reality Head-Mounted Displays in Medical Education: A Systematic Review

SUMMARY STATEMENT

Simulation-based training using virtual reality head-mounted displays (VR-HMD) is increasingly being used within the field of medical education. This article systematically reviews and appraises the quality of the literature on the use of VR-HMDs in medical education. A search in the databases PubMed/MEDLINE, Embase, ERIC, Scopus, Web of Science, Cochrane Library, and PsychINFO was carried out. Studies were screened according to predefined exclusion criteria, and quality was assessed using the Medical Education Research Study Quality Instrument. In total, 41 articles were included and thematically divided into 5 groups: anatomy, procedural skills, surgical procedures, communication skills, and clinical decision making. Participants highly appreciated using VR-HMD and rated it better than most other training methods. Virtual reality head-mounted display outperformed traditional methods of learning surgical procedures. Although VR-HMD showed promising results when learning anatomy, it was not considered better than other available study materials. No conclusive findings could be synthesized regarding the remaining 3 groups.

Impact of Virtual Operating Room Tours on Relieving Perioperative Anxiety in Adult Patients: A Systematic Review

PURPOSE

To evaluate the effects of virtual operating room tours on perioperative anxiety in adult patients.

DESIGN

This study was a systematic review of randomized controlled trials (RCTs).

METHODS

PubMed, Cochrane Library, Embase, Web of Science, Proquest, Scopus, SinoMed, CNKI, and WanFang were systematically searched for English and Chinese RCTs published up to November 18, 2021, for studies on the effectiveness of virtual operating room tours in reducing perioperative anxiety in adult patients (>18 years of age). Primary and secondary outcomes were perioperative anxiety levels and understanding level of perioperative information and patient satisfaction, respectively. The data were synthesized using a qualitative method.

FINDINGS

Five studies were found eligible for inclusion; 3 studies showed a significant decrease in perioperative anxiety levels in patients of the virtual operating room tours group. Furthermore, the overall satisfaction, understanding of perioperative information, and preoperative preparedness were significantly enhanced respectively in 3 studies.

CONCLUSIONS

This study showed the effectiveness of virtual operating room tour on alleviating perioperative anxiety on adult patients. Furthermore, the satisfaction and understanding of perioperative information in intervention group improved owing to these tours. Future quantitative studies are needed to support these findings.

Effects of Patient Education and Distraction Approaches Using Virtual Reality on Pre-operative Anxiety and Post-operative Pain in Patients Undergoing Laparoscopic Cholecystectomy

BACKGROUND

Fear of post-operative pain often contributes to pre-operative anxiety; accordingly, pain and anxiety are among the most common complications in patients undergoing laparoscopic cholecystectomy (LC).

AIM

The present study aimed to determine the effects of patient education and distraction using virtual reality (VR) on pre-operative anxiety and post-operative pain in patients undergoing LC.

METHOD

This randomized clinical trial included 150 patients in the surgery wards of educational hospitals in Mashhad, Iran, in 2020. The participants were randomly assigned to three groups of education, distraction, and control. The education and distraction groups watched two five-minute animations and three 360-degree images of nature using VR glasses 2 hours before and 4 hours after the surgery, respectively. On the other hand, the control group received routine care. Anxiety was measured using Spielberger's State Anxiety Inventory before and half an hour after the intervention. Moreover, the pain was measured using the visual analog scale and McGill Pain Questionnaire.

RESULTS

The results demonstrated a significant reduction in the two VR groups regarding the pre-operative anxiety mean scores, compared with the control group (p < .001). Furthermore, a significant reduction was observed in post-operative pain scores of patients in the two intervention groups compared with the control group (p = .001).

CONCLUSIONS

As evidenced by the results, both VR approaches of patient education and distraction equally decreased pre-operative anxiety and post-operative pain in patients undergoing LC.

Timing of sedation and patient-reported pain outcomes during cardiac catheterization: Results from the UNTAP-intervention study

BACKGROUND

Invasive cardiac catheterization (CC) temporarily increases pain, discomfort, and anxiety. Procedural sedation is deployed to mitigate these symptoms, though practice varies. Research evaluating peri-procedural patient-reported outcomes is lacking.

METHODS AND RESULTS

We randomized 175 patients undergoing CC to short interval ([SI] group, <6 min) or long interval ([LI] group, ≥6 min) time intervals between initial intravenous sedation and local anesthetic administration. Outcomes included: (1) total pain medication use, (2) patient-reported and behaviorally assessed pain and (3) patient satisfaction during outpatient CC. Generalized linear mixed effect models were used to evaluate the impact of treatment time interval on total medication utilization, pain, and satisfaction. Among enrollees the mean age was 62 (standard deviation [SD] = 13.4), a majority were male (66%), white (74%), and overweight (mean body mass index = 28.5 [SD = 5.6]). Total pain medication use did not vary between treatment groups (p = 0.257), with no difference in total fentanyl (p = 0.288) or midazolam (p = 0.292). Post-treatment pain levels and nurse-observed pain were not statistically significant between groups (p = 0.324 & p = 0.656, respectively. No significant differences with satisfaction with sedation were found between the groups (p = 0.95) Patient-reported pain, satisfaction and nurse-observed measures of pain did not differ, after adjustment for demographic and procedural factors. Analyses of treatment effect modification revealed that postprocedure self-reported pain levels varied systematically between individuals undergoing percutaneous coronary intervention (PCI) (SI = 2.2 [0.8, 3.6] vs. LI = 0.7 [-0.6, 2.0]) compared with participants not undergoing PCI (SI = 0.4 [-0.8, 1.7] vs. LI = 0.7 [-0.3, 1.6]) (p = 0.043 for interaction).

CONCLUSION

No consistent treatment differences were found for total medication dose, pain, or satisfaction regardless of timing between sedation and local anesthetic. Treatment moderations were seen for patients undergoing PCI. Further investigation of how procedural and individual factors impact the patient experience during CC is needed.

Can virtual reality technology be considered as a part of the surgical care pathway?

INTRODUCTION

Virtual reality (VR) is emerging as a new technology in the healthcare sector. It has been shown to enhance the patient's experience and satisfaction in various settings. This review aims to give a brief description of the use of VR and establish validity of its applications to improve the patient's pathway through surgery.

METHODS

A literature search was conducted using the PubMed and Embase™ databases to identify fields in which VR technology has been trialled in relation to surgery. The search terms 'virtual reality' and 'surgery' were employed.

RESULTS

Although benefits relating to VR use have been identified in mental health, obesity management, and physical and cognitive rehabilitation, those in surgery have been less well documented. There are, however, some important but limited benefits reported in managing surgery related stress and improving preoperative patient education as well as VR being an adjunct to some level of postoperative analgesia.

CONCLUSIONS

The current applications of VR in relation to surgical care fall into four main categories: preoperative education, supporting mental health, postoperative pain management, and pre and postoperative patient optimisation. Future studies and validation of VR applications should be carried out so the technology can be utilised throughout the entire patient pathway as VR surgical care bundles.

The effectiveness of using virtual reality technology for perioperative anxiety among adults undergoing elective surgery: a randomised controlled trial protocol

BACKGROUND

More than 2.5 million people are admitted for surgery in Australia each year, and between 40 to 80% will experience moderate to high preoperative anxiety. Elevated levels of preoperative anxiety can increase the risk of postoperative complications such as pain, delayed wound healing, infection, prolonged recovery, and longer hospitalisation. Limited previous research on Virtual Reality (VR) indicates a positive impact on surgery-related anxiety and suggests that the intervention potentially leads to reduce postoperative complications.

OBJECTIVE

To evaluate the effectiveness of using VR technology for perioperative anxiety among adults undergoing elective surgery.

METHOD

A two-group parallel randomised controlled trial (RCT) will be conducted, including 150 adult patients (aged 18 years and over) undergoing elective surgery and requiring an overnight stay at a major metropolitan hospital. Eligible participants will be screened for anxiety via the Amsterdam Preoperative Anxiety and Information score (APAIS). Those with moderate to severe anxiety will be randomly allocated to receive the VR session or usual care, in the preoperative holding area. Intervention participants will use a head-mounted VR device to watch and listen to a nature scene for 10 minutes.

STUDY OUTCOMES

The primary outcome is perioperative anxiety measured using the visual analogue scale for anxiety (VAS-A). Secondary outcomes include stress levels (measured by saliva cortisol level and heart rate), postoperative pain, patient satisfaction with perioperative care, hospital length of stay, and VR-associated adverse events.

CONCLUSION

This study will help evaluate if a brief preoperative VR session can reduce perioperative anxiety for adult elective surgical patients.

TRIAL REGISTRATION

Australia and New Zealand Clinical Trials Registry (ANZCTR) ACTRN12620001350910.

Patients' voices in the development of pre-surgical patient education using virtual reality: A qualitative study

Objective

To identify the information needs and perceptions of patients regarding the application of virtual reality in pre-surgical patient education.

Methods

A qualitative study was conducted between March and July 2020. The study population consisted of a purposive sample of patients scheduled for cardiac surgery from a single institution. Semi-structured individual interviews (n=19) were conducted and analysed using thematic analysis.

Results

Patient perceptions regarding virtual reality and information needs related to hospitalisation and surgery could be categorised into three themes: Creating familiarity, contents to explore and challenges and preconditions.

Conclusions

Virtual reality technology is a promising tool that can enhance conventional patient education to improve understanding and to potentially reduce concerns and anxieties. The virtual reality environment creates an opportunity for patients to be in control of the timing, quantity, depth and frequency of patient education. A virtual reality education tool should not be a substitute for personal contact with the physician.

Innovation

Patient information needs were identified profoundly to the further development of a virtual reality intervention. This intervention aims to educate patients prior to elective cardiac surgery.

Perioperative Outcomes of Immersive Virtual Reality as Adjunct Anesthesia in Primary Total Hip and Knee Arthroplasty

Background

Immersive virtual reality (IVR) is utilized as an adjunct to anesthesia to distract patients from their intraoperative environment, thereby potentially reducing sedative and narcotic medication usage. This study evaluated intraoperative and acute postoperative results of patients undergoing primary total hip (THA) and total knee arthroplasty (TKA) with and without IVR.

Methods

Utilizing IVR as an adjunct to spinal anesthesia, 18 primary THAs (n = 8) and TKAs (n = 10) were performed. These cases were 1:2 matched based on procedure type, age, sex, and body mass index to those performed without IVR. Intraoperative and postanesthesia care unit sedative/narcotic usage, vital signs, and pain scores were compared. Acute perioperative outcomes, including 24-hour oral morphine equivalent (OME), first ambulation distance, length of stay, and 30-day complications, were also analyzed. Pearson Chi-square and Wilcoxon-Mann-Whitney tests evaluated categorical and continuous variables, respectively.

Results

When compared to non-IVR primary THAs and TKAs, those performed with IVR utilized significantly less intraoperative sedation (48 mg vs 708 mg of propofol; P < .001) and trended toward less narcotic usage (13 mcg vs 39 mcg of fentanyl; P = .07). In the postanesthesia care unit, IVR and non-IVR patients showed no significant differences (P > .3) in vital signs, pain scores, or OME received. Additionally, similar (P > .3) postoperative outcomes were noted in both cohorts’ 24-hour OME use, distance at first ambulation, length of stay, and 30-day complications.

Conclusions

The use of spinal anesthesia with the IVR adjunct to perform primary THAs and TKAs appears to be well-tolerated and associated with less intraoperative sedative medication usage than spinal anesthesia alone.

Effect of intensive care unit-specific virtual reality (ICU-VR) to improve psychological well-being in ICU survivors: study protocol for an international, multicentre, randomised controlled trial-the HORIZON-IC study

INTRODUCTION

A substantial proportion of intensive care unit (ICU) survivors develop psychological impairments after ICU treatment, part of the postintensive care syndrome, resulting in a decreased quality of life. Recent data suggest that an ICU-specific virtual reality intervention (ICU-VR) for post-ICU patients is feasible and safe, improves satisfaction with ICU aftercare, and might improve psychological sequelae. In the present trial, we firstly aim to determine whether ICU-VR is effective in mitigating post-traumatic stress disorder (PTSD)-related symptoms and secondly to determine the optimal timing for initiation with ICU-VR.

METHODS AND ANALYSIS

This international, multicentre, randomised controlled trial will be conducted in 10 hospitals. Between December 2021 and April 2023, we aim to include 300 patients who have been admitted to the ICU ≥72 hours and were mechanically ventilated ≥24 hours. Patients will be followed for 12 consecutive months. Patients will be randomised in a 1:1:1 ratio to the early ICU-VR group, the late ICU-VR group, or the usual care group. All patients will receive usual care, including a mandatory ICU follow-up clinic visit 3 months after ICU discharge. Patients in the early ICU-VR group will receive ICU-VR within 2 weeks after ICU discharge. Patients in the late VR group will receive ICU-VR during the post-ICU follow-up visit. The primary objective is to assess the effect of ICU-VR on PTSD-related symptoms. Secondary objectives are to determine optimal timing for ICU-VR, to assess the effects on anxiety-related and depression-related symptoms and health-related quality of life, and to assess patient satisfaction with ICU aftercare and perspectives on ICU-VR.

ETHICS AND DISSEMINATION

The Medical Ethics Committee United, Nieuwegein, the Netherlands, approved this study and local approval was obtained from each participating centre (NL78555.100.21). Our findings will be disseminated by presentation of the results at (inter)national conferences and publication in scientific, peer-reviewed journals.

TRIAL REGISTRATION NUMBER

NL9812.

Technology-Based Approaches for Supporting Perinatal Mental Health

PURPOSE OF REVIEW

This review explores advances in the utilization of technology to address perinatal mood and anxiety disorders (PMADs). Specifically, we sought to assess the range of technologies available, their application to PMADs, and evidence supporting use.

RECENT FINDINGS

We identified a variety of technologies with promising capacity for direct intervention, prevention, and augmentation of clinical care for PMADs. These included wearable technology, electronic consultation, virtual and augmented reality, internet-based cognitive behavioral therapy, and predictive analytics using machine learning. Available evidence for these technologies in PMADs was almost uniformly positive. However, evidence for use in PMADs was limited compared to that in general mental health populations. Proper attention to PMADs has been severely limited by issues of accessibility, affordability, and patient acceptance. Increased use of technology has the potential to address all three of these barriers by facilitating modes of communication, data collection, and patient experience.

The use of virtual reality in patient education related to medical somatic treatment: A scoping review

OBJECTIVE

To map the available evidence on the context, content and outcome of VR in patient education in situations related to preparation for medical somatic treatment.

METHODS

A Scoping review. In October 2020, the Embase, CINAHL, MEDLINE and PsycINFO databases were searched with the terms 'Virtual Reality' and 'Patient Education'. The literature was synthesised and mapped with a narrative approach.

RESULTS

17 studies published between 2015 and 2020 were included in the qualitative synthesis. VR was applied in (paediatric) surgery and radiation therapy treatment. VR interventions were heterogeneous regarding technical applications, context of implementation, guidance by healthcare professionals and integration in education sessions. Anxiety reduction was demonstrated significantly in some studies. Patients experienced VR education useful; it enhanced understanding, improved communication with healthcare professionals and encouraged treatment compliance.

CONCLUSIONS

The application of VR in patient education is a promising technology. Patients are highly satisfied and experience enhanced understanding. VR education was not effective in reducing all anxiety, pain and stress and improving preparedness for treatment. Practice implications It is important to develop VR interventions profoundly. The application of a methodological framework for VR development is recommended. Involve patients, educationalists and technology professionals in the development of technology interventions.

Adjunct Digital Interventions Improve Opioid-Based Pain Management: Impact of Virtual Reality and Mobile Applications on Patient-Centered Pharmacy Care

Digital therapeutics (DTx, mobile medical apps, software as a medical device) are rapidly emerging as clinically effective treatments for diverse chronic diseases. For example, the Food and Drug Administration (FDA) has recently authorized a prescription virtual reality (VR) app for treatment of moderate to severe low back pain. The FDA has also approved an adjunct digital therapy in conjunction with buprenorphine for opioid use disorder, further illustrating opportunities to integrate digital therapeutics with pharmacotherapies. There are ongoing needs to disseminate knowledge about advances in digital interventions among health care professionals, policymakers, and the public at large. This mini-review summarizes accumulating clinical evidence of digital interventions delivered via virtual reality and mobile apps to improve opioid-based analgesia. We identified relevant randomized controlled trials (RCTs) using Embase and PubMed databases which reported pain scores with a validated pain scale (e.g., visual analog scales, graphic rating scale, numeric rating scale) and use of a digital intervention in conjunction with opiates. Among identified RCTs, the majority of studies reported improved pain scores in the digital intervention group, as compared to “treatment as usual” group. Our work suggests that VR and mobile apps can be used as adjunct digital therapies for pain management. We discuss these findings in the context of how digital health technologies can transform patient-centered pharmacy care.

Virtual and Augmented Reality in Neurosurgery: The Evolution of its Application and Study Designs

BACKGROUND

As the art of neurosurgery evolves in the 21st century, more emphasis is placed on minimally invasive techniques, which require technical precision. Simultaneously, the reduction on training hours continues, and teachers of neurosurgery faces "double jeopardy"-with harder skills to teach and less time to teach them. Mixed reality appears as the neurosurgical educators' natural ally: Virtual reality facilitates the learning of spatial relationships and permits rehearsal of skills, while augmented reality can make procedures safer and more efficient. Little wonder then, that the body of literature on mixed reality in neurosurgery has grown exponentially.

METHODS

Publications involving virtual and augmented reality in neurosurgery were examined. A total of 414 papers were included, and they were categorized according to study design and analyzed.

RESULTS

Half of the papers were published within the last 3 years alone. Whereas in the earlier half, most of the publications involved experiments in virtual reality simulation and the efficacy of skills acquisition, many of the more recent publication are proof-of-concept studies. This attests to the evolution of mixed reality in neurosurgery. As the technology advances, neurosurgeons are finding more applications, both in training and clinical practice.

CONCLUSIONS

With parallel advancement in Internet speed and artificial intelligence, the utilization of mixed reality will permeate neurosurgery. From solving staff problems in global neurosurgery, to mitigating the deleterious effect of duty-hour reductions, to improving individual operations, mixed reality will have a positive effect in many aspects of neurosurgery.

The effect of an informative 360-degree virtual reality video on anxiety for women visiting the one-stop clinic for abnormal uterine bleeding: A randomized controlled trial (VISION-trial)

OBJECTIVE

To evaluate the effect of an informative 360-degree virtual reality (VR) video on preoperative anxiety before visiting a one-stop clinic for abnormal uterine bleeding.

STUDY DESIGN

A randomized controlled trial was performed in a teaching hospital in the Netherlands. A total of 83 women scheduled for a first consultation at the one-stop clinic between April 2017 and September 2017 were included in the analysis. All women received a standard information leaflet about the clinic. 40 women were randomized to receive a 360-degree VR-video of the clinic in addition. The primary outcome was change in the Visual Analogue Scale for Anxiety (VAS-A), measured at baseline (before randomization) and in the waiting room (before visit, after randomization). Anxiety assessed with the State-Trait Anxiety Inventory (STAI-S) was a secondary outcome. Other secondary outcomes included anxiety during the visit and the opinion of the women about the provided information.

RESULTS

Only 27 out of the 40 women actually watched the VR-video. Women in the VR-group who actually watched the video reported lower levels of anxiety at baseline compared to women in the VR-group who did not watch the video. In the intention-to-treat analysis, there was no difference in change in anxiety between the VR-group and the control group (mean difference VAS-A = 0.07, 95% CI -0.96 to 1.10; mean difference STAI-S = 1.97, 95% CI -1.82 to 5.77). In the per-protocol analysis, women in the VR-group reported lower anxiety scores in the waiting room. However, the change in anxiety scores between baseline and waiting room was comparable in both groups. 31% of the women who watched the VR-video reported that the video resulted in a reduction of anxiety, 69% reported that the video is of added value and 65% would use a VR-video again in future.

CONCLUSIONS

Adding the informative 360-degree VR-video to conventional information did not result in a reduction of anxiety prior to visiting the one-stop clinic. However, the majority of women who watched the video felt that it was of added value. Remarkable was that women who reported higher anxiety at baseline seemed less willing to watch the video.

A Preoperative Virtual Reality App for Patients Scheduled for Cardiac Catheterization: Pre–Post Questionnaire Study Examining Feasibility, Usability, and Acceptability

Background

Pre- and postoperative anxiety is a common phenomenon associated with negative postoperative outcomes. Symptoms of posttraumatic stress disorder, such as fear, nightmares, and sleep deprivation, are prevalent in approximately 30% to 50% of patients following discharge from intensive care units after cardiac surgery. Preliminary evidence suggests a promising role of virtual reality (VR) in preventing stress-related reactions using stress inoculation training. Such training enables cognitive preparation of individuals for stressful situations, thereby becoming more tolerant and resistant to stress, subsequently reducing the risk of potential negative psychological consequences. This study investigated a preoperative VR app—Pre-View—aimed at better informing and preparing patients for cardiac catheterization.

Objective

This study aims to assess the feasibility, usability, and acceptability of Pre-View in patients undergoing cardiac catheterization.

Methods

Eligible participants were adults scheduled for elective cardiac catheterization. Pre-View comprised an interactive virtual representation of the whole care process related to cardiac catheterization, from entering the hospital for admission to postprocedural stay and discharge. These processes were represented through 360° videos and interactive photos. Self-report questionnaires were completed at baseline (ie, before catheterization and after undergoing the VR experience) and after cardiac catheterization. Outcome measures included user experience and satisfaction, VR presence and immersive tendencies, and user friendliness. The perceived effectiveness was assessed exploratively.

Results

A total of 8 individuals, with a mean age of 67 (SD 7.5) years, participated in this study. Half of them underwent the VR experience at the hospital and the other half at home. Participants reported high levels of presence in the virtual environment (Presence Questionnaire score: mean 129.1, SD 13.4). The usability of Pre-View was well evaluated (System Usability Scale score: mean 89.1, SD 12.0), and patient satisfaction was high (Client Satisfaction Questionnaire score: mean 27.1, SD 3.2). Usability and satisfaction scores were higher for participants who underwent Pre-View at home versus those who underwent Pre-View at the hospital, although the latter group was significantly older; 72.8 versus 61.3, respectively. All participants reported Pre-View to be effective in terms of feeling better informed about the care process of cardiac catheterization. Most participants (7/8, 88%) reported Pre-View to be effective in terms of feeling better prepared for cardiac catheterization, acknowledging the potential of Pre-View in reducing negative psychological consequences after catheterization.

Conclusions

The results provide initial support for the feasibility and acceptability of a preoperative VR app, creating a virtual environment that supports patient education and preparation for upcoming cardiac catheterization. More studies are needed to further investigate the effects of VR as a tool to better prepare patients for medical procedures, its effectiveness in reducing negative patient outcomes (eg, anxiety, stress, and postoperative recovery outcomes), and the generalizability of effects across different settings and patient populations.

Augmented, Virtual and Mixed Reality in Dentistry: A Narrative Review on the Existing Platforms and Future Challenges

The recent advancements in digital technologies have led to exponential progress in dentistry. This narrative review aims to summarize the applications of Augmented Reality, Virtual Reality and Mixed Reality in dentistry and describes future challenges in digitalization, such as Artificial Intelligence and Robotics. Augmented Reality, Virtual Reality and Mixed Reality represent effective tools in the educational technology, as they can enhance students’ learning and clinical training. Augmented Reality and Virtual Reality and can also be useful aids during clinical practice. Augmented Reality can be used to add digital data to real life clinical data. Clinicians can apply Virtual Reality for a digital wax-up that provides a pre-visualization of the final post treatment result. In addition, both these technologies may also be employed to eradicate dental phobia in patients and further enhance patient’s education. Similarly, they can be used to enhance communication between the dentist, patient, and technician. Artificial Intelligence and Robotics can also improve clinical practice. Artificial Intelligence is currently developed to improve dental diagnosis and provide more precise prognoses of dental diseases, whereas Robotics may be used to assist in daily practice.

[Anatomic and clinical study of virtual reality technology assisted modified transtrochanteric curved varus osteotomy for osteonecrosis of the femoral head]

OBJECTIVE

To explore the feasibility and effectiveness of the modified transtrochanteric curved varus osteotomy in the treatment of osteonecrosis of the femoral head (ONFH), clarify the key points of the operation, and then explore the effectiveness of modified transtrochanteric curved varus osteotomy in the treatment of ONFH assisted by virtual reality (VR) technology.

METHODS

A 70-year-old adult female cadaver without formaldehyde fixation was taken. It was confirmed by anatomical study and simulated operation that the modified transtrochanteric curved varus osteotomy was suitable for type C1 (patients with involvement of the lateral column of the femoral head but partial integrity) classified by the Japanese Osteonecrosis Investigation Committee (JIC). Between October 2018 and August 2020, 11 patients (17 hips) with ONFH who met the selection criteria were treated with modified transtrochanteric curved varus osteotomy. VR technology was used to simulate varus osteotomy before operation to predict the angle of valgus of lower limbs and pronation of femoral head. Osteotomy, valgus, and pronation were performed according to the results of preoperative planning. After operation, X-ray films were used to evaluate the changes of varus and neck-shaft angle after VR assisted surgery, and Harris score was used to evaluate the hip function.

RESULTS

The anteroposterior pelvic X-ray film was rechecked at 2 days after operation, of which 3 hips were consistent with the planned varus angle of VR preoperative planning, and the error value of varus angle of the remaining 14 hips was 1°-4°. The difference between VR preoperative planning and 2 days after operation was 6°-16°. All 11 patients were followed up 11-28 months, with an average of 19.2 months. All incisions healed by first intension. During the follow-up, 1 case (1 hip) developed greater trochanter fracture at 2 months after operation and was treated with open reduction and plate and screw internal fixation; 1 case (1 hip) had delayed healing at osteotomy at 4 months after operation and healed at 3 months after local injection of platelet rich plasma and oral supplementation of kidney blood-strengthening soup. At last follow-up, 17 hip osteotomies healed. The Harris score was 84.0±5.6, which was significantly higher than that before operation (57.2±5.5) ( t=-14.107, P=0.000); hip function was excellent in 2 hips, good in 13 hips, and fair in 2 hips.

CONCLUSION

The modified transtrochanteric curved varus osteotomy for the treatment of ONFH is theoretically feasible, and the short-term effectiveness of this operation combined with VR technology is satisfactory.