Surgical Management of Hangman's Fracture: A Systematic Review.

BACKGROUND: Hangman's fractures are bilateral fractures of the C2 pars interarticularis produced during hyperextension injuries. The Levine-Edwards classification divides these fractures into 4 categories determined by injury stability. While stable fracture patterns are typically managed conservatively, prolonged traction required in unstable fractures may be superseded by surgery in its practicality. Surgical approaches can be divided into anterior and posterior: the anterior approach allows access to the disc and is used for anterior cervical discectomy and fusion (ACDF); the posterior approach includes C2 direct pedicle screw (DPS), which preserves motion segments and may be done with a minimally invasive surgery (MIS) approach. Multilevel rod and screw fusion provide the strongest biomechanical fixation. This systematic review compares indications, complications, and functional outcomes of different approaches. METHODS: A search of multiple databases with keywords "hangman fracture," "hangman's fracture," "axis fracture," and "C2 fracture" was conducted; articles were included if they described the surgical technique and included at least one of the primary outcomes: functional outcomes, complication rates, operation time, and blood loss. RESULTS: A total of 1889 abstracts were screened, 137 full text articles were analyzed, and 36 articles were included, yielding a combined total of 627 patients. ACDF was preferred in unstable fracture patterns. Pre- and postoperative visual analog scale (VAS) scores fell in all groups, with MIS DPS producing the lowest VAS scores. Approaches had excellent neurological improvement and fusion rates. Reported complication rates were generally low; self-limiting dysphagia was most common in the anterior approach and higher volumes of blood loss occured with the posterior approach (255.9 mL in open posterior approach, 75.8 mL in MIS, and 64.3 mL in ACDF). CONCLUSION: All surgical methods of hangman's fracture fixation have their indications and advantages; surgeons should be equipped to perform all options. Anterior approaches may be preferred for their lower blood loss and access to the disc; however, MIS may improve outcomes in posterior approach. CLINICAL RELEVANCE: This systematic review can assist spinal surgeons in the selection of the most appropriate surgical option for hangman's fracture and allow surgeons to inform patients of the risks and benefits.

The learning preferences of aspiring orthopaedic surgeons in the UK.

BACKGROUND/AIMS: The workload of orthopaedic trainees is rapidly increasing at the expense of training. Trainees are expected to assimilate large quantities of information efficiently. This prospective cohort study explores the learning styles, resource preferences and educational needs of aspiring orthopaedic trainees. METHOD: A 21-item questionnaire was distributed to delegates of an orthopaedic teaching series. Data were obtained pertaining to demographics, visual, aural, read/write and kinaesthetic learning styles, study materials used and teaching exposure. RESULTS: Participants had a strong preference for visual (48.0%) and kinaesthetic (43.0%) learning modalities. Most participants prepared for written exams using online question banks (85.9%), clinical exams using question banks (37.5%) and discussion with colleagues (27.3%), and surgical procedures intraoperatively (43.8%). Only 12.4% of participants felt the teaching they received was consistently adapted to their visual, aural, read/write or kinaesthetic learning preference. CONCLUSIONS: The surgical landscape is rapidly changing. It is vital that trainers take into consideration how budding orthopaedic surgeons learn and make the relevant accommodations, to ensure optimal learning.

Bullying in trauma and orthopaedics: a survey of staff in orthopaedic departments in the UK.

BACKGROUND/AIMS: An orthopaedic department requires good teamwork and communication to function. This is undermined by bullying and harassment, which may affect the victim's health and career. METHODS: A 26-item questionnaire was sent to all delegates who registered for a free orthopaedic webinar teaching series via email and social media. This study includes the responses from all those who had worked in a UK orthopaedic department. RESULTS: There were 168 respondents from varying backgrounds; 17.9% had experienced bullying or harassment in their orthopaedic department, while 36.3% had witnessed it. Women and people from ethnic minority backgrounds suffered 10.2% and 6.9% higher rates of bullying than their male or white counterparts respectively. CONCLUSIONS: The results demonstrate that despite attempts to reduce bullying in orthopaedics, it remains prevalent, and particularly affects women and those from ethnic minority backgrounds. Orthopaedic departments must adapt to reflect changes in society.

The Experiences, Influences and Concerns of Future Orthopaedic Surgeons: Comparing Uk and non-UK Perspectives.

AIMS/BACKGROUND: This study aims to identify and analyse the factors that influence or discourage junior doctors in the UK and across the world from wanting to pursue a career in orthopaedics. METHODS: A prospective, cohort study was carried out via an online questionnaire targeted at aspiring orthopaedic surgeons. RESULTS: A total of 654 respondents met inclusion criteria; 370 (56.6%) were UK-based and 284 (43.4%) were based abroad. The practical and technical nature of orthopaedics was the biggest influencing factor globally. UK respondents were notably more concerned by the financial impact of training (49%) followed by poor work-life balance (36%). Themes from the comments section revealed concern regarding gender bias and a lack of diverse role models within orthopaedics. CONCLUSIONS: Reducing the cost and length of training, diversification of role models, removal of bias and increasing positive early experiences may help to encourage people of all backgrounds to pursue a career in orthopaedic surgery.

Trampolines injuries are bouncing back.

AIMS: This observational study examines the effect of the COVID-19 pandemic upon the paediatric trauma burden of a district general hospital. We aim to compare the nature and volume of the paediatric trauma during the first 2020 UK lockdown period with the same period in 2019. METHODS: Prospective data was collected from 23 March 2020 to 14 June 2020 and compared with retrospective data collected from 23 March 2019 to 14 June 2019. Patient demographics, mechanism of injury, nature of the injury, and details of any surgery were tabulated and statistically analyzed using the independent-samples t-test for normally distributed data and the Mann-Whitney-U test for non-parametric data. Additionally, patients were contacted by telephone to further explore the mechanism of injury where required, to gain some qualitative insight into the risk factors for injury. RESULTS: The 2020 lockdown resulted in 30% fewer paediatric trauma presentations (441 vs 306), but no significant change in the number of patients requiring surgery (47 vs 51; p = 0.686). Trampolining injuries increased in absolute numbers by 168% (p < 0.001), almost four times more common when considered as percentage of all injuries observed in 2020 vs 2019. There was a decrease in high energy trauma from road traffic accidents and falls from height (21.5% decrease, p < 0.001). Despite a shift towards more conservative treatment options, trampolining injuries continued to require surgery in similar proportions (19.4 vs 20%; p = 0.708). Qualitative investigation revealed that the most common risk factor for trampolining injury was concurrent usage, especially with an older child. CONCLUSION: COVID-19 lockdown has resulted in a decrease in paediatric orthopaedic presentations and high energy trauma. However, due to a marked increase in home trampolining injuries, and their unchanged requirement for surgery, there has been no change in the requirement for surgery during the lockdown period. As home exercise becomes more prevalent, a duty of public health falls upon clinicians to advise parents against trampoline usage. Cite this article: Bone Jt Open 2021;2(2):86-92.

Cervical Spine Pedicle Screw Accuracy in Fluoroscopic, Navigated and Template Guided Systems-A Systematic Review.

Background: Pedicle screws provide excellent fixation for a wide range of indications. However, their adoption in the cervical spine has been slower than in the thoracic and lumbar spine, which is largely due to the smaller pedicle sizes and the proximity to the neurovascular structures in the neck. In recent years, technology has been developed to improve the accuracy and thereby the safety of cervical pedicle screw placement over traditional fluoroscopic techniques, including intraoperative 3D navigation, computer-assisted Systems and 3D template moulds. We have performed a systematic review into the accuracy rates of the various systems. Methods: The PubMed and Cochrane Library databases were searched for eligible papers; 9 valid papers involving 1427 screws were found. Results: fluoroscopic methods achieved an 80.6% accuracy and navigation methods produced 91.4% and 96.7% accuracy for templates. Conclusion: Navigation methods are significantly more accurate than fluoroscopy, they reduce radiation exposure to the surgical team, and improvements in technology are speeding up operating times. Significantly superior results for templates over fluoroscopy and navigation are complemented by reduced radiation exposure to patient and surgeon; however, the technology requires a more invasive approach, prolonged pre-operative planning and the development of an infrastructure to allow for their rapid production and delivery. We affirm the superiority of navigation over other methods for providing the most accurate and the safest cervical pedicle screw instrumentation, as it is more accurate than fluoroscopy and lacks the limitations of templates.

Agrin induces long-term osteochondral regeneration by supporting repair morphogenesis.

Cartilage loss leads to osteoarthritis, the most common cause of disability for which there is no cure. Cartilage regeneration, therefore, is a priority in medicine. We report that agrin is a potent chondrogenic factor and that a single intraarticular administration of agrin induced long-lasting regeneration of critical-size osteochondral defects in mice, with restoration of tissue architecture and bone-cartilage interface. Agrin attracted joint resident progenitor cells to the site of injury and, through simultaneous activation of CREB and suppression of canonical WNT signaling downstream of ß-catenin, induced expression of the chondrogenic stem cell marker GDF5 and differentiation into stable articular chondrocytes, forming stable articular cartilage. In sheep, an agrin-containing collagen gel resulted in long-lasting regeneration of bone and cartilage, which promoted increased ambulatory activity. Our findings support the therapeutic use of agrin for joint surface regeneration.