Purpose The purpose of this study was to systematically evaluate the dimensions and thickness of the hip joint capsule. Secondarily, the study assessed whether there were any described correlations between capsule thickness and stability of the hip joint. Methods Four databases (PubMed, Ovid [MEDLINE], Cochrane Database, and EMBASE) were searched from database inception to May 2018, and two reviewers independently and in duplicate screened the resulting literature. Methodological quality of all included papers was assessed using the Methodological index for non‐randomized studies (MINORS) criteria. Mean differences were combined in a meta‐analysis using a random effects model when possible. Results A total of 14 studies (1 level I, 1 level II, 4 level III, 5 level IV) were identified including 796 patients (1013 hips) with a mean age of 39.5 years (range 2–95). Of the included patients, 55.2% were female and they were followed up for a mean of 7.6 months (range 1–12.5 months). The thickness of the capsule was measured in cadaveric specimens, ultrasound, and magnetic resonance imaging (MRI), with MRI measurements reported most consistently and with the least variation. Mean thickness of the anterior capsule in patients without hip disease on MRI ranged from 4.4 and 4.7 mm. Mean thickness of the anterior capsule in patients with FAI ranged between 4.9 and 5.0 mm. Males had significantly thicker capsules than females (mean difference = 1.92 mm, 0.35–3.49, P = 0.02). Clinical laxity of the hip joint, as well as female gender was correlated with thinner anterior joint capsules. Conclusion The thickness of the anterior hip capsule can be measured consistently using MRI. A thinner anterior capsule may be associated with clinical laxity of the hip joint. The relevance of capsular thickness on postoperative instability following hip arthroscopy is poorly understood and warrants further investigation. The thickness of the anterior hip capsule, as measured on MRI, has the potential to be used as part of the clinical decision‐making in capsular management strategies. Level of evidence IV.
Current algorithms recommend computed tomography or fluoroscopic guidance rather than ultrasonography for musculoskeletal intervention. We analyzed our ultrasonographically guided experience to evaluate its efficacy. Forty-seven patients underwent needle aspirates or biopsies or both in 13 extremity and 34 axial locations for 12 inflammatory lesions, 23 soft tissue masses, and 12 lesions arising from bone. Four lesions were initially imaged by ultrasonography; the remaining lesions were identified by computed tomography (25) or magnetic resonance imaging (18). Forty-six samples were diagnostic; one needle aspirate of an inflammatory mass yielded no diagnostic material. No complications occurred. Ultrasonographically guided musculoskeletal aspiration and biopsy are diagnostic and effective throughout the body, and with appropriate lesion access, they should be considered as an alternative to computed tomographic-guided procedures.
Introduction Physician assistant (PA) is a burgeoning profession in Canada, with several accredited training programs. Because the scope of practice for PAs in Ontario, as delineated by the province, stipulates that all tasks they perform must be delegated by a supervising physician, it is expected that medical students will increasingly encounter and work alongside PAs in clinical environments. There has been a paucity of research to date investigating how medical students experience this professional relationship. This current study aimed to investigate the attitudes and perspectives that medical students have about working with PAs. Methods Medical students from the University of Toronto (n = 11) in various stages of training participated in 3 focus groups. The focus groups used a semi-structured interview guide to explore medical students’ general opinions of the profession, their understanding of the interprofessional relationship, and their experiences working with PAs. Qualitative methods with a phenomenological underpinning were used to analyze the focus groups. Results The findings show that medical students have observed or collaborated with PAs in clinical environments but are generally unaware of the profession’s scope of practice and responsibilities. Medical students also viewed PAs as beneficial to patient care and expressed a desire to discover more about the profession through formal education. Discussion This call for interprofessional education should be heeded by medical faculty to better prepare medical students for future collaboration with PAs.
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