Background Tendinosis in the common extensor tendon and accompanying ligament, bone, and plica abnormalities can be observed on magnetic resonance imaging (MRI). Purpose To determine whether there is a difference between accompanying abnormalities according to the degree of common extensor tendon injury Material and Methods Patients who underwent 1.5-T MRI tests with a prediagnosis of lateral overuse syndrome were retrospectively reviewed, and 56 patients who had an injury in the common extensor tendon (CET) were included. The degree of tendon and ligament injury, muscle signal change, bone marrow signal change, presence of joint effusion, and morphological features in the presence of plica were evaluated via MRI examinations of the elbow. Results Overall, 32, 16, and eight patients had mild, moderate, and severe CET damage, respectively. As the severity of CET damage increased, the presence of joint effusion, and the presence and degree of damage to the lateral ulnar collateral ligament (LUCL) and radial collateral ligament (RCL) increased. The radiohumeral (RH) plica area was significantly larger in the group with mild CET damage. There was no statistically significant correlation between the severity of CET damage and the end of RH plica with a blind-end, coverage of one-third or more of the radius, its signal, thickness, and presence of olecranon fold. Conclusion As the severity of CET injury increases, damage to the LUCL, RCL, and the presence of effusion in the joint increases. RH plica should be evaluated in terms of concomitant pathology in patients with mild CET injuries on MRI.

Gas accumulation in human joint spaces has been generally described as the vacuum phenomenon (VP). To date, the sacroiliac joint VP has been associated mostly with pathological, particularly degenerative conditions (e.g., arthritis, obesity, discal degenerations, fractures, dislocations, avascular necrosis). OBJECTIVEThe study aimed to examine the characteristics of the physiological form of VP and its radiological patterns in a sample of pediatric patients. METHODSA sample of seventy patients between 0 and 17 years old (mean age, 11.4 ± 5.54) were included in the study. Sample VP cases was evaluated according to types, age group, anatomic localization, gender, and sides. RESULTS: Two (2.9%) of sample children had degenerative VP, with 24 (34.2%) of patients demonstrating physiological VP in the sacroiliac joints. VP rates significantly increased after nine years of age (p < 0.01) and 83% of physiological VP cases were determined to be bilateral. CONCLUSIONSAlthough degenerative VP is a rare entity in children, non-pathological VP can be a more common aspect of sacroiliac anatomy. Although sacroiliac VP is frequently an underreported or omitted finding in imaging studies, this condition may be clinically important as a clue for other degenerative diagnoses. Normal variants of VP may be clinically important in children since they may mimic inflammatory and infectious pathologies during magnetic resonance imaging and computed tomography images.

Spinoglenoid notch ganglion cyst (SNGC) is a rare shoulder cystic lesion. It is usually associated with superior labrum anteroposterior (SLAP) tears. SNGC can typically cause compression of the suprascapular nerve at the spinoglenoid notch. The aim of our paper is to draw attention to the relation of SNGC cyst with SLAP tears and to raise awareness so that accompanying low-grade labral tears are not overlooked. In addition, since these findings usually accompanied by acromioclavicular joint hypertrophy, the clinic table accidentally can be linked with impingement. The patient applied to our hospital with a complaint of weakness and mild pain in his arm. External rotation was difficult in the examination. Linear type I SLAP tear associated with degeneration was detected. The radiological findings of SLAP tear were subtle, and there were additional findings that could be interpreted as impingement. A lobulated and multiloculated cyst was observed in the supraglenoid notch.