MRI-Arthroscopy Correlation of Knee Anatomy and Pathologic Findings: A Teaching Guide.

Objective: The purpose of this study is to familiarize the radiologist with knee arthroscopy, including the setup, equipment, and standard procedure used. This is followed by a discussion of the strengths and weaknesses of knee MRI and arthroscopy and presentation of images showing normal knee anatomy and pathologic findings.

Conclusion: By having an understanding of basic arthroscopic principles as well as the strengths and limitations of MRI and arthroscopy in the diagnosis of knee abnormalities, radiologists will improve image interpretation and add value to interactions with the consulting orthopedic surgeon.

Comparison of a fast 5-min knee MRI protocol with a standard knee MRI protocol: a multi-institutional multi-reader study.

Purpose: To compare diagnostic performance of a 5-min knee MRI protocol to that of a standard knee MRI.

Materials And Methods: One hundred 3 T (100 patients, mean 38.8 years) and 50 1.

Imaging features of glenoid bare spot in a pediatric population.

Objective: The bare spot (BaS) is a central, well-circumscribed focal defect in the glenoid articular surface, with reported adult incidence of 1-2%. We aimed to reassess MRI features of BaS in the pediatric population and determine its etiology.

Materials And Methods: A retrospective search of our database from June 2014 to October 2015 was performed for shoulder MRI in patients between 5 and 25 years and then subdivided into four groups: group 1, 5-10 years; group 2, 10-15 years; group 3, 15-18 years; group 4, 20-25 years.

Growth plate injury at the base of the coracoid: MRI features.

Purpose: To assess the MRI features of growth plate injury at the base of the coracoid process.

Materials And Methods: Subjects were identified through retrospective search of our department imaging database and teaching files and the teaching files of two outside academic institutions. The coracoid base growth plate was examined with attention to widening, irregularity, abnormal signal intensity of the growth plate, and the presence of adjacent soft tissue edema.

Tarsal tunnel disease and talocalcaneal coalition: MRI features.

Objective: To assess, utilizing MRI, tarsal tunnel disease in patients with talocalcaneal coalitions. To the best of our knowledge, this has only anecdotally been described before.

Materials And Methods: Sixty-seven ankle MRIs with talocalcaneal coalition were retrospectively reviewed for disease of tendons and nerves of the tarsal tunnel.

Imaging features of iBalance, a new high tibial osteotomy: what the radiologist needs to know.

Objective: To describe the post-surgical imaging appearance and complications of high tibial osteotomy in patients with the iBalance implant system (iHTO; Arthrex, Naples, FL, USA).

Materials And Methods: Retrospective, institutional review board-approved, Health Insurance Portability and Accountability Act-compliant review of imaging after 24 iBalance procedures was performed with attention to: correction of varus malalignment, healing at the osteotomy site, resorption of the osteoinductive compound, and complications.

Results: Immediate correction of the varus deformity was present in all cases.