Effects of reduction technique for acute anterior shoulder dislocation without sedation or intra-articular pain management: a systematic review and meta-analysis.

INTRODUCTION: Anterior shoulder dislocations are commonly seen in the emergency department for which several closed reduction techniques exist. The aim of this systematic review is to identify the most successful principle of closed reduction techniques for an acute anterior shoulder dislocation in the emergency department without the use of sedation or intra-articular lidocaine injection. METHODS: A literature search was conducted up to 15-08-2022 in the electronic databases of PubMed, Embase and CENTRAL for randomized and observational studies comparing two or more closed reduction techniques for anterior shoulder dislocations. Included techniques were grouped based on their main operating mechanism resulting in a traction-countertraction (TCT), leverage and biomechanical reduction technique (BRT) group. The primary outcome was success rate and secondary outcomes were reduction time and endured pain scores. Meta-analyses were conducted between reduction groups and for the primary outcome a network meta-analysis was performed. RESULTS: A total of 3118 articles were screened on title and abstract, of which 9 were included, with a total of 987 patients. Success rates were 0.80 (95% CI 0.74; 0.85), 0.81 (95% CI 0.63; 0.92) and 0.80 (95% CI 0.56; 0.93) for BRT, leverage and TCT, respectively. No differences in success rates were observed between the three separate reduction groups. In the network meta-analysis, similar yet more precise effect estimates were found. However, in a post hoc analysis the BRT group was more successful than the combined leverage and TCT group with a relative risk of 1.33 (95% CI 1.19, 1.48). CONCLUSION: All included techniques showed good results with regard to success of reduction. The BRT might be the preferred technique for the reduction of an anterior shoulder dislocation, as patients experience the least pain and it results in the fastest reduction.

Predicting suitability of intramedullary fixation for displaced midshaft clavicle fractures.

PURPOSE: Implant-related irritation is a technique-specific complication seen in a substantial number of patients treated with intramedullary nailing for clavicle fractures. The purpose of this study was to identify predictors for developing implant-related irritation in patients with displaced midshaft clavicle fractures treated with elastic stable intramedullary nailing. METHODS: A retrospective analysis of the surgical database in two level 2 trauma centers was performed. Patients who underwent intramedullary nailing for displaced midshaft clavicle fractures between 2005 and 2012 in the first hospital were included. Age, gender, fracture comminution and fracture location were assessed as possible predictors for developing irritation using multivariate logistic regression analysis. These predictors were externally validated using data of patients treated in another hospital. RESULTS: Eighty-one patients were included in initial analysis. In the multivariate analysis, comminuted fractures in comparison to non-comminuted fractures (72 vs. 38%, p = 0.027) and fracture location (p < 0.001) were significantly associated with the development of implant-related irritation. In particular, lateral diaphyseal fractures caused irritation compared to fractures on the medial side of the cut-off point (88 vs. 26%). External validation of these predictors in 48 additional patients treated in another hospital showed a similar predictive value of the model and a good fit. CONCLUSION: Comminuted and lateral diaphyseal fractures were found to be statistically significant and independent predictors for developing implant-related irritation. We, therefore, believe that intramedullary nailing might not be suitable for these types of fractures. Future studies are needed to determine whether alternative surgical techniques or implants would be more suitable for these specific types of fractures.

Clinical research on postoperative trauma care: has the position of observational studies changed?

OBJECTIVE: The postoperative care regimes of ankle fractures are studied for over 30 years and recommendations have shifted only slightly in the last decades. However, study methodology might have evolved. The aim of this study was to evaluate the changes in time in the design, quality and outcome measures of studies investigating the postoperative care of ankle fractures. METHODS: The MEDLINE and EMBASE database were searched for both RCTs and cohort studies. The original studies were divided into decades of publication over the last 30 years. The methodological quality of the studies was assessed using the 'traditional' risk of bias assessment tool provided by The Cochrane Collaboration and the 'newer' MINORS criteria. RESULTS: The percentage of RCTs on this subject declined from 67 to 38 % in the last decades. According to the Cochrane tool, the reported quality of RCTs has improved in the last three decades whereas the reported quality of observational studies has remained unchanged. However, when quality was evaluated with the MINORS criteria, equal improvement was observed for both RCTs and observational studies. In the 80s, 67 % of all studies used the range of motion as the primary outcome measure, which decreased to 45 % in the 90s. In the 00s, none of the studies used the range of motion as the primary outcome. CONCLUSION: For postoperative care of ankle fractures, results of this study showed a relative decrease in the published number of RCTs. The overall quality of the published articles did not decline. In addition, a gradual shift from physician measured to patient-reported outcome variables was observed. However, it should be borne in mind that the findings are based on a small sample (n = 25).

The SEP "robot": a valid virtual reality robotic simulator for the Da Vinci Surgical System?

The aim of the study was to determine if the concept of face and construct validity may apply to the SurgicalSim Educational Platform (SEP) "robot" simulator. The SEP robot simulator is a virtual reality (VR) simulator aiming to train users on the Da Vinci Surgical System. To determine the SEP's face validity, two questionnaires were constructed. First, a questionnaire was sent to users of the Da Vinci system (reference group) to determine a focused user-group opinion and their recommendations concerning VR-based training applications for robotic surgery. Next, clinical specialists were requested to complete a pre-tested face validity questionnaire after performing a suturing task on the SEP robot simulator. To determine the SEP's construct validity, outcome parameters of the suturing task were compared, for example, relative to participants' endoscopic experience. Correlations between endoscopic experience and outcome parameters of the performed suturing task were tested for significance. On an ordinal five-point, scale the average score for the quality of the simulator software was 3.4; for its hardware, 3.0. Over 80% agreed that it is important to train surgeons and surgical trainees to use the Da Vinci. There was a significant but marginal difference in tool tip trajectory (p = 0.050) and a nonsignificant difference in total procedure time (p = 0.138) in favor of the experienced group. In conclusion, the results of this study reflect a uniform positive opinion using VR training in robotic surgery. Concepts of face and construct validity of the SEP robotic simulator are present; however, these are not strong and need to be improved before implementation of the SEP robotic simulator in its present state for a validated training curriculum to be successful .

The value of haptic feedback in conventional and robot-assisted minimal invasive surgery and virtual reality training: a current review.

BACKGROUND: Virtual reality (VR) as surgical training tool has become a state-of-the-art technique in training and teaching skills for minimally invasive surgery (MIS). Although intuitively appealing, the true benefits of haptic (VR training) platforms are unknown. Many questions about haptic feedback in the different areas of surgical skills (training) need to be answered before adding costly haptic feedback in VR simulation for MIS training. This study was designed to review the current status and value of haptic feedback in conventional and robot-assisted MIS and training by using virtual reality simulation. METHODS: A systematic review of the literature was undertaken using PubMed and MEDLINE. The following search terms were used: Haptic feedback OR Haptics OR Force feedback AND/OR Minimal Invasive Surgery AND/OR Minimal Access Surgery AND/OR Robotics AND/OR Robotic Surgery AND/OR Endoscopic Surgery AND/OR Virtual Reality AND/OR Simulation OR Surgical Training/Education. RESULTS: The results were assessed according to level of evidence as reflected by the Oxford Centre of Evidence-based Medicine Levels of Evidence. CONCLUSIONS: In the current literature, no firm consensus exists on the importance of haptic feedback in performing minimally invasive surgery. Although the majority of the results show positive assessment of the benefits of force feedback, results are ambivalent and not unanimous on the subject. Benefits are least disputed when related to surgery using robotics, because there is no haptic feedback in currently used robotics. The addition of haptics is believed to reduce surgical errors resulting from a lack of it, especially in knot tying. Little research has been performed in the area of robot-assisted endoscopic surgical training, but results seem promising. Concerning VR training, results indicate that haptic feedback is important during the early phase of psychomotor skill acquisition.