Staphylococcus aureus (S. aureus) osteomyelitis is a significant complication for orthopaedic patients undergoing surgery, particularly with fracture fixation and arthroplasty. Given the difficulty in studying S. aureus infections in human subjects, animal models serve an integral role in exploring the pathogenesis of osteomyelitis, and aid in determining the efficacy of prophylactic and therapeutic treatments. Animal models should mimic the clinical scenarios seen in patients as closely as possible to permit the experimental results to be translated to the corresponding clinical care. To help understand existing animal models of S. aureus, we conducted a systematic search of PubMed and Ovid MEDLINE to identify in vivo animal experiments that have investigated the management of S. aureus osteomyelitis in the context of fractures and metallic implants. In this review, experimental studies are categorised by animal species and are further classified by the setting of the infection. Study methods are summarised and the relevant advantages and disadvantages of each species and model are discussed. While no ideal animal model exists, the understanding of a model's strengths and limitations should assist clinicians and researchers to appropriately select an animal model to translate the conclusions to the clinical setting.

Background Internet searches and social media utilization in healthcare has exploded over the past five years, and patients utilize it to gain information on their health conditions and physicians. Social media has the potential to serve as a means for education, communication, and marketing in all healthcare specialties. Physicians are sometimes reluctant to engage due to concerns of privacy, litigation, and lack of experience with this modality. Many surgical subspecialties have capitalized on social media but no study to date has examined the specific footprint of pediatric orthopedic surgeons in this realm. We aim to quantify the utilization of individual social media platforms by pediatric orthopedic surgeons, and identify any differences between private and hospital based physicians, but also regional differences. Methods Using the POSNA Member Directory, each active member’s social media presence was reviewed through an Internet search. Members were stratified based on practice model and geographic location. Individual Internet searches, social media sites, and number of publications were reviewed for social media presence. Results Of 987 POSNA members, 95% had a professional webpage, 14.8% a professional Facebook page, 2.2% a professional Twitter page, 36.8% a LinkedIn profile, 25.8% a ResearchGate profile, 33% at least one YouTube. Hospital based physicians had a lower mean level of utilization of social media compared to their private practice peers, and a higher incidence of Pubmed publications. Private practice physicians had double the social media utilization. Regional differences reveal that practicing Pediatric Orthopaedists in the Northeast had increased utilization of ResearchGate and LinkedIn and the West had the lowest mean social media utilization levels. Conclusion The rapid expansion of social media usage by patients and their family members is an undeniable force impacting the health care industry. The Internet and social media platforms provide all physicians with a means to educate patients, collaborate with colleagues, and promote their practice and areas of interest. Our survey indicates that pediatric orthopedic surgeons may be underutilizing their potential social media presence. Levels of Evidence Level IV

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The case is presented of a professional international rugby union player who sustained an isolated proximal tibiofibular dislocation in a training ground injury. Diagnosis was made based on clinical details, plain radiography and magnetic resonance imaging. An initial attempt at closed reduction failed. Open reduction and internal fixation were subsequently carried out. Following early rehabilitation, the patient made a successful try-scoring return to international rugby union.

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III.