ACR Appropriateness Criteria® Soft Tissue Masses: 2022 Update.

Imaging should be performed in patients with a suspected soft tissue mass that cannot be clinically confirmed as benign. Imaging provides essential information necessary for diagnosis, local staging, and biopsy planning. Although the modalities available for imaging of musculoskeletal masses have undergone progressive technological advancements in recent years, their overall purpose in the setting of a soft tissue mass remains unchanged. This document identifies the most common clinical scenarios related to soft tissue masses and the most appropriate imaging for their assessment on the basis of the current literature. It also provides general guidance for those scenarios that are not specifically addressed. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where peer reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.

ACR Appropriateness Criteria® Malignant or Aggressive Primary Musculoskeletal Tumor-Staging and Surveillance: 2022 Update.

Malignant or aggressive primary musculoskeletal tumors are rare and encompass a wide variety of bone and soft tissue tumors. Given the most common site for metastasis from these primary musculoskeletal tumors is to the lung, chest imaging is integral in both staging and surveillance. Extrapulmonary metastases are rarely encountered with only a few exceptions. Following primary tumor resection, surveillance of the primary tumor site is generally recommended. Local surveillance imaging recommendations differ between primary tumors of bone origin versus soft tissue origin. This document consolidates the current evidence and expert opinion for the imaging staging and surveillance of these tumors into five clinical scenarios. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer-reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances in which peer-reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.

ACR Appropriateness Criteria® Suspected Osteomyelitis, Septic Arthritis, or Soft Tissue Infection (Excluding Spine and Diabetic Foot): 2022 Update.

Musculoskeletal infections involve bones, joints, and soft tissues. These infections are a common clinical scenario in both outpatient and emergent settings. Although radiography provides baseline findings, a multimodality approach is often implemented to provide more detailed information on the extent of infection involvement and complications. MRI with intravenous contrast is excellent for the evaluation of musculoskeletal infections and is the most sensitive for diagnosing osteomyelitis. MRI, CT, and ultrasound can be useful for joint and soft tissue infections. When MRI or CT is contraindicated, bone scans and the appropriate utilization of other nuclear medicine scans can be implemented for aiding in the diagnostic imaging of infection, especially with metal hardware and arthroplasty artifacts on MRI and CT. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer-reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances in which peer-reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.

ACR Appropriateness Criteria® Inflammatory Back Pain: Known or Suspected Axial Spondyloarthritis: 2021 Update.

Inflammatory back pain is a hallmark feature of axial spondyloarthritis, a heterogeneous group of inflammatory disorders which affects the sacroiliac joints and spine. Imaging plays a key role in diagnosis of this disease and in facilitating appropriate treatment. This document provides evidence-based recommendations on the appropriate use of imaging studies during multiple stages of the clinical evaluation of patients with suspected or known axial spondyloarthritis. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

ACR Appropriateness Criteria® Primary Bone Tumors.

Although primary bone tumors are relatively uncommon, appropriate imaging evaluation is essential when they are suspected or incidentally detected. In almost all cases, radiographs are the most appropriate initial imaging study for screening and characterization of primary bone tumors. Radiographs often provide sufficient information for diagnosis and to guide the treating clinician. However, when conventional radiographs alone are inadequate, they still often guide the selection of the most appropriate next step for advanced imaging. MRI and CT are typically the most appropriate next step. MRI provides excellent soft-tissue contrast allowing for evaluation of the tissue composition (such as fat, hemorrhage, fluid levels) and anatomic extent of bone tumors. CT provides complementary information, with its ability to detect subtle matrix mineralization or periosteal reaction that may not be seen on radiographs or MRI. This publication focuses on six common variants to guide diagnosis and management of primary bone tumors. In addition to conventional radiographs, appropriate use of MRI, CT, PET/CT, bone scan, and ultrasound are discussed. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

2019 musculoskeletal radiology fellowship match process: initial experiences and lessons learned.

OBJECTIVE: To present the 2019 Musculoskeletal (MSK) fellowship Match information most useful to MSK fellowship programs and sections in hopes of optimizing the fellowship application and selection process for MSK fellowship applicants and training programs. MATERIALS/METHODS: We performed a mixed method analysis to gain a better understanding of the 2019 MSK Fellowship Match process. First, we distributed a ten-question survey to the fellowship leadership from the 78 US fellowship programs registered with the Society of Skeletal Radiology. Second, we collected and reviewed NRMP Match data that were distributed on Match Day. RESULTS: We received completed surveys from 37 (45.7%) programs. Thirty-three (89.2%) of the responding programs identified themselves as academic, 3 (8.1%) as hybrid, and 1 (2.7%) as private practice. On average, programs interviewed 15.4 applicants over the interview session, with a range between 2 and 40. There was an average of 2.7 (range 1-8) open positions per fellowship and 1.2 (range 0-4) internal candidates per program. Each program interviewed 5.8 applicants per open position (range 1-24). There were a total of 81 certified MSK fellowship programs and 204 available positions in these programs. Twenty-four programs (29.6%) did not fill all positions resulting in a total of 36 unfilled positions (17.6%). The percentage of MSK unfilled programs, unfilled positions, and unmatched applicants were comparable to the Breast Imaging and Neuroradiology subspecialty matches. CONCLUSION: The MSK Fellowship Match was a success with high match rates for applicants and programs. Most importantly, the Match allowed programs to make more informed decisions on their fellowship training opportunities.

ACR Appropriateness Criteria® Suspected Osteomyelitis of the Foot in Patients With Diabetes Mellitus.

Diabetes-related foot complications such as soft-tissue infection, osteomyelitis, and neuropathic osteoarthropathy account for up to 20% of all diabetic-related North American hospital admissions. Radiography of the foot is usually appropriate as the initial screening examination in diabetic patients with suspected osteomyelitis of the foot. For follow-up examination, MRI of the foot with or without contrast enhancement demonstrates excellent soft-tissue contrast and sensitivity to marrow abnormalities with high-resolution detail in multiple anatomic planes and is usually appropriate when osteomyelitis or early neuropathic arthropathy is suspected. This publication of diabetes-related foot complications summarizes the literature and makes recommendations for imaging based on the available data. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

ACR Appropriateness Criteria® Suspected Spine Trauma.

Injuries to the cervical and thoracolumbar spine are commonly encountered in trauma patients presenting for treatment. Cervical spine injuries occur in 3% to 4% and thoracolumbar fractures in 4% to 7% of blunt trauma patients presenting to the emergency department. Clear, validated criteria exist for screening the cervical spine in blunt trauma. Screening criteria for cervical vascular injury and thoracolumbar spine injury have less validation and widespread acceptance compared with cervical spine screening. No validated criteria exist for screening of neurologic injuries in the setting of spine trauma. CT is preferred to radiographs for initial assessment of spine trauma. CT angiography and MR angiography are both acceptable in assessment for cervical vascular injury. MRI is preferred to CT myelography for assessing neurologic injury in the setting of spine trauma. MRI is usually appropriate when there is concern for ligament injury or in screening obtunded patients for cervical spine instability. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

ACR Appropriateness Criteria® Acute Hand and Wrist Trauma.

Hand and wrist injuries are common reasons for musculoskeletal-related emergency department visits. Imaging is essential for evaluating many of these injuries. In most cases, conventional radiographs provide sufficient information to guide the treating clinician. This review focuses on seven common variants to guide diagnosis of hand and wrist injuries. In addition to radiographs, appropriate use of CT, MRI, bone scan, and ultrasound are discussed. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

ACR Appropriateness Criteria® Soft-Tissue Masses.

Imaging is an integral component of the evaluation of patients with a suspected soft-tissue mass. Imaging can not only confirm the presence of a mass but can provide essential information necessary for diagnosis, local staging, and biopsy planning. Although the objectives of the evaluation have not changed, the choices available for imaging of musculoskeletal masses have evolved dramatically in recent years. The purpose of this document is to identify the most common clinical scenarios and the most appropriate imaging for their assessment on the basis of the current literature and to provide general guidance for those scenarios that are not specifically addressed. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

ACR Appropriateness Criteria® Shoulder Pain-Traumatic.

Traumatic shoulder pain is pain directly attributed to a traumatic event, either acute or chronic. This pain may be the result of either fracture (the clavicle, scapula, or proximal humerus) or soft-tissue injury (most commonly of the rotator cuff, acromioclavicular ligaments, or labroligamentous complex). Imaging assessment of traumatic shoulder pain begins with conventional radiography and, depending on physical examination findings, will require MRI or MR arthrography for assessment of soft-tissue injuries and CT for delineation of fracture planes. Ultrasound excels in assessment of rotator cuff injuries but has limited usefulness for assessment of the deep soft-tissues. CT angiography and conventional arteriography are helpful for assessment of vascular injury, and bone scintigraphy can be used in assessment of complex regional pain syndrome after traumatic shoulder injury. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

Musculoskeletal Radiology Fellowship Application and Selection Process: Perceptions of Residents, Fellows, and Fellowship Directors.

RATIONAL AND OBJECTIVES: This study aimed to assess resident, fellow, and fellowship director perceptions of the musculoskeletal (MSK) radiology fellowship application process. MATERIALS AND METHODS: A task group constructed three surveys with questions about current and "ideal" fellowship application and selection processes. Surveys were distributed to MSK fellowship directors, who were also asked to give separate surveys to current fellows. US and Canadian radiology residency directors were asked to distribute surveys to current R3 and R4 residents. Responses were tabulated and analyzed. RESULTS: Responses were received from 47 MSK fellowship directors, 73 MSK fellows, and 147 residents. Fellowship directors and fellows reported that most fellowship offers occur between July and September of the R3 year, although 19% of directors made offers as early as the R2 year. Of the 43 director respondents, 31 (72%) noted "pressure from other programs" as the main driving force behind their policies, but 28 (65%) felt that their timelines were "too early." A formal match was supported by 55% of responding fellowship directors, 57% of fellows, and 61.9% of residents, citing "fairness" as a major justification. CONCLUSIONS: MSK radiology fellowship selection occurs as early as the R2 year, before many residents have had substantial exposure to different subspecialties. An "arms race" has developed with programs moving their timelines earlier in response to the actions of other programs, presumably to avoid missing the best candidates. Although a majority of respondents would support a formalized match to increase fairness, there is not universal agreement that it would be the best approach.

Interpretive Differences Between Patients and Radiologists Regarding the Diagnostic Confidence Associated With Commonly Used Phrases in the Radiology Report.

OBJECTIVE: Despite patients' increasing interest in reading their own imaging results, little is known about how patients interpret the reporting terminology of radiologists. The purpose of this study was to survey patients and radiologists to improve understanding of how each group views commonly used phrases within the radiology report. SUBJECTS AND METHODS: Patients and radiologists were asked to assign a numerical likelihood of the presence of metastatic disease based on their understanding of radiology report phrasing. Commonly used qualifying phrases, such as "likely represents," "concerning for," and "cannot exclude" were evaluated to compare differences in interpretation between patients and radiologists. Potential responses for statistical likelihoods included 0-25%, 26-50%, 51-75%, 76-99%, and 100%. RESULTS: There was a significant difference between the two groups with respect to assigned statistical likelihoods for most phrases. Patients identified the phrase "probably meta-static disease" as conferring the highest likelihood of true malignancy, even though radiologists rated this phrase as conferring the sixth highest likelihood (p = 0.002). Radiologists consistently identified the phrase "diagnostic for metastatic disease" as conveying the highest likelihood of metastatic disease, whereas patients ranked this phrase as having the third highest numerical likelihood (p < 0.001). The phrase "cannot exclude cancer" was assigned the lowest numerical likelihood by both groups. CONCLUSION: Patients and radiologists have differing perceptions of the specific semantic meaning of the language in radiology reports. A variable interpretation of the radiologist's diagnostic confidence may lead to confusion and dissatisfaction with the report. Radiologists should consider that patients read their reports and should endeavor to use strategies to convey imaging results clearly and effectively.

Radiology Reporting: Current Practices and an Introduction to Patient-Centered Opportunities for Improvement.

OBJECTIVE: As health care evolves, the radiology report must also change to satisfy referring physician and patient expectations. Knowledge of the issues and controversies regarding a patient-centered approach to reporting practices is important. This article will aid the radiologist in this endeavor by summarizing key facets of radiology reporting, including current reporting standards and emerging patient-centered concepts in report language, formatting, and delivery. CONCLUSION: Future efforts to improve radiology reporting practices need to account for the needs of an increasingly heterogeneous audience that includes patients. Radiologists must exploit information technologies to craft and deliver meaningful patient-centered reports. A modern radiology report will be a powerful, flexible document that strengthens the connection between the radiologist and the patient.

Appropriate Use Criteria in Musculoskeletal Imaging.

In the United States, health care costs are spiraling upward at an unsustainable rate. Concurrently, medical specialties, legislatures, and the population each recognize the need to prove that current medical practices are effective, measured by outcomes. These forces necessitate a change in radiology's role, from emphasizing interpretation and reporting to maintaining and demonstrating quality and value. An important part of this task involves establishing the appropriateness of imaging tests by application of objective data and expert opinion in an effort to optimize resource utilization and modality selection. We explore the justifications for establishing appropriateness use criteria, various paradigms that have been applied to their creation, inherent limitations of appropriateness rules based on imperfect data, and challenges associated with their widespread implementation and utilization. An appendix of key terms that may be unfamiliar to radiologists is included for future reference.

Impact of an Interactive Diagnostic Case Simulator on a Medical Student Radiology Rotation.

OBJECTIVE: The objective of our study was to assess the short-term impact of adding an interactive simulator to a medical student radiology clerkship. We hypothesized that transitioning students from passive observers to active participants in the reading room would create an appealing and effective learning experience for the current generation of students. MATERIALS AND METHODS: An interactive workstation that provided diagnostic simulations of 84 cases selected to maximize exposure to important diagnoses in musculoskeletal (MSK) radiology was created. From February 2015 through July 2016, 83 students on the radiology elective rotated through MSK: 40 in the traditional observational role and 43 with the MSK simulator. At the end of the rotation, all students completed general radiology and MSK-based competency examinations. The students who used the interactive workstation completed a survey about their experience. RESULTS: MSK competency scores were significantly better for students who rotated with the interactive workstation compared with students in the traditional observational role (mean scores, 71% and 51%, respectively; p < 0.0001). There was no difference in end-of-rotation general competency scores between the groups (mean, 86% and 85%; p = 0.32). Ninety-one percent of students reported the simulator had at least a moderately positive impact on their radiology experience. All students (100%) reported that learning was improved and recommended establishing workstations for other subspecialties. Twenty-one percent of students reported that their experience using the simulator had a positive impact on considering radiology as a career choice. CONCLUSION: Using a reading room-based diagnostic radiology case simulator improves medical student learning, enables self-directed learning, and improves overall experience on the radiology clerkship, positively impacting consideration of radiology as a career.

Impact of Shoulder Sonography on Clinical Decision Making.

OBJECTIVES: To assess the impact of musculoskeletal shoulder sonography (US) on clinical decision making. METHODS: This Health Insurance Portability and Accountability Act-compliant retrospective study received Institutional Review Board approval with a waiver of informed consent. Consecutive musculoskeletal shoulder US examinations ordered over a 12-month period were retrospectively reviewed. The medical records of each patient were analyzed, recording immediate pre- and post-US treatment plans. Treatment plans were categorized as follows: 1, no further treatment; 2, conservative management/physical therapy; 3, therapeutic injection; 4, surgical intervention; 5, change in diagnosis; and 6, need additional imaging. Data were analyzed by nonparametric statistical methods. RESULTS: A total of 935 patient examinations met inclusion criteria. Of 935 patients, 591 (63.2%) had a post-US treatment plan that differed from pre-US treatment, showing a statistically significant impact on patient treatment (P < .001). In 744 of the 935 examinations (79.6%), the treating physician initially prescribed conservative therapy as a treatment plan; 423 of those 744 patients (56.9%) were subsequently prescribed a more invasive form of treatment. Of the remaining 191 of 935 patients (20.4%) initially treated with invasive treatment, 101 (52.9%) received a change in the treatment plan after the US examinations, with 46 patients (24.1%) relegated to noninvasive treatment. Sonography also played a role in surgical planning, with 25 studies (2.7%) specifically performed to evaluate rotator cuff integrity when deciding between conventional and reverse shoulder arthroplasty. CONCLUSIONS: Musculoskeletal shoulder US has a substantial impact on clinical decision making and patient treatment.

Idiopathic Acquired Osteosclerosis in a Middle-Aged Woman With Systemic Lupus Erythematosus.

Widely distributed osteosclerosis is an unusual radiographic finding with multiple causes. A 42-year-old premenopausal Spanish woman gradually acquired dense bone diffusely affecting her axial skeleton and focally affecting her proximal long bones. Systemic lupus erythematosus (SLE) diagnosed in adolescence had been well controlled. She had not fractured or received antiresorptive therapy, and she was hepatitis C virus antibody negative. Family members had low bone mass. Lumbar spine bone mineral density (BMD) measured by dual-photon absorptiometry (DPA) at age 17 years, while receiving glucocorticoids, was 79% the average value of age-matched controls. From ages 30 to 37 years, dual-energy X-ray absorptiometry (DXA) BMD Z-scores steadily increased in her lumbar spine from +3.8 to +7.9, and in her femoral neck from -1.4 to -0.7. Serum calcium and phosphorus levels were consistently normal, 25-hydroxyvitamin D (25OHD) <20 ng/mL, and parathyroid hormone (PTH) sometimes slightly increased. Her reduced estimated glomerular filtration rate (eGFR) was 38 to 55 mL/min. Hypocalciuria likely reflected positive mineral balance. During increasing BMD, turnover markers (serum bone-specific alkaline phosphatase [ALP], procollagen type 1 N propeptide [P1NP], osteocalcin [OCN], and carboxy-terminal cross-linking telopeptide of type 1 collagen [CTx], and urinary amino-terminal cross-linking telopeptide of type 1 collagen [NTx and CTx]) were 1.6- to 2.8-fold above the reference limits. Those of bone formation seemed increased more than those of resorption. FGF-23 was slightly elevated, perhaps from kidney disease. Serum osteoprotegerin (OPG) and TGFß1 levels were normal, but sclerostin (SOST) and receptor activator of nuclear factor kappa-B ligand (RANKL) were elevated. Serum multiplex biomarker profiling confirmed a high level of SOST and RANKL, whereas Dickkopf-1 (DKK-1) seemed low. Matrix metalloproteinases-3 (MMP-3) and -7 (MMP-7) were elevated. Iliac crest biopsy revealed tetracycline labels, no distinction between thick trabeculae and cortical bone, absence of peritrabecular fibrosis, few osteoclasts, and no mastocytosis. Then, for the past 3 years, BMD Z-scores steadily decreased. Skeletal fluorosis, mastocytosis, myelofibrosis, hepatitis C-associated osteosclerosis, multiple myeloma, and aberrant phosphate homeostasis did not explain her osteosclerosis. Mutation analysis of the LRP5, LRP4, SOST, and osteopetrosis genes was negative. Microarray showed no notable copy number variation. Perhaps her osteosclerosis reflected an interval of autoimmune-mediated resistance to SOST and/or RANKL. © 2016 American Society for Bone and Mineral Research.

Manubrial stress fractures diagnosed on MRI: report of two cases and review of the literature.

In contrast to widely-reported sternal insufficiency fractures, stress fractures of the sternum from overuse are extremely rare. Of the 5 cases of sternal stress fracture published in the English-language medical literature, 3 were in the sternal body and only 2 were in the manubrium. We describe two cases of manubrial stress fracture related to golf and weightlifting, and present the first report of the MR findings of this injury. In each of these cases, the onset of pain was atraumatic, insidious, and associated with increased frequency of athletic activity. Imaging was obtained because of clinical diagnostic uncertainty. On MRI, each patient had a sagittally oriented stress fracture of the lateral manubrium adjacent to the first rib synchondrosis. Both patients had resolution of pain after a period of rest, with subsequent successful return to their respective activities. One patient had a follow-up MRI, which showed resolution of the manubrial marrow edema and fracture line. Based on the sternal anatomy and MR findings, we hypothesize that this rare injury might be caused by repetitive torque of the muscle forces on the first costal cartilage and manubrium, and propose that MRI might be an effective means of diagnosing manubrial stress fracture.

Traumatic Tear of the Latissimus Dorsi Myotendinous Junction: Case Report of a CrossFit-Related Injury.

A case of a latissimus dorsi myotendinous junction strain in an avid CrossFit athlete is presented. The patient developed acute onset right axillary burning and swelling and subsequent palpable pop with weakness while performing a "muscle up." Magnetic resonance imaging examination demonstrated a high-grade tear of the right latissimus dorsi myotendinous junction approximately 9 cm proximal to its intact humeral insertion. There were no other injuries to the adjacent shoulder girdle structures. Isolated strain of the latissimus dorsi myotendinous junction is a very rare injury with a scarcity of information available regarding its imaging appearance and preferred treatment. This patient was treated conservatively and was able to resume active CrossFit training within 3 months. At 6 months postinjury, he had only a mild residual functional deficit compared with his preinjury level.