A 30-year-old man presented with left hip pain and was diagnosed with femoral head avascular necrosis associated with idiopathic hypoparathyroidism, hypocalcemia, and vitamin D deficiency. Treatment with calcium, calcitriol, analgesia, and physiotherapy improved symptoms. This case suggests hypoparathyroidism may play a role in the development of avascular necrosis.

Dual mobility (DM) constructs reduce dislocation risk in total hip arthroplasty. The Trident II system accepts a cobalt-chromium liner to create a DM bearing. However, dissimilar metal at the cup-liner interface raises concerns for corrosion. This case series describes six cementless primary Trident II DM total hip arthroplasty patients who experienced gradual onset of hip pain with low-grade inflammatory symptoms and elevated serum cobalt. All patients underwent revision surgery for metallic debris reaction. Preoperative magnetic resonance imaging revealed local tissue reaction, and intraoperative findings confirmed corrosion at the cup-liner interface. Surviellance through serum metal ion testing and magnetic resonance imaging may prevent soft tissue damage and facilitate timely revision. As DM systems evolve, further investigation is warranted to evaluate safety.

Osteoid osteoma (OO) is a benign osteoblastic tumor typically affecting young individuals. OO arising in the femoral neck is rare and may present with atypical clinical and radiological features, frequently leading to diagnostic delay. We report a case of a 50-year-old man with persistent hip pain for 8 months. Initial radiographs were unremarkable, and both magnetic resonance arthrography (MRA) and magnetic resonance imaging (MRI) demonstrated nonspecific bone marrow edema without identification of a nidus. Despite multiple clinical evaluations, including diagnostic injections and lumbar spine imaging, the patient's symptoms persisted. Computed tomography (CT) ultimately revealed a small nidus with central mineralization in the anteromedial region of the femoral neck. The diagnosis was confirmed histologically, and the patient was successfully treated with CT-guided radiofrequency ablation (RFA), resulting in complete symptom resolution. This case highlights the diagnostic challenges of OO in the femoral neck, particularly in older patients with atypical symptoms. MRI may obscure the nidus due to extensive bone marrow edema, emphasizing the importance of CT in cases of persistent focal bone marrow edema and inconclusive MRI findings.

Sacral insufficiency fractures are an underrecognized source of atraumatic lumbopelvic pain in elderly osteoporotic patients and may evade diagnosis when initial radiographs are inconclusive. We describe an elderly osteoporotic woman who presented to an outpatient spine clinic with atraumatic low back and hip girdle/groin pain, without radicular symptoms or neurologic deficit. After failure of four weeks of conservative treatment, MRI confirmed bilateral sacral insufficiency fractures, and CT-guided bilateral sacroplasty was performed for persistent axial pain. The procedure was complicated by immediate severe right L5-S1 radicular pain, with MRI and CT demonstrating cement extravasation into the right S1 neural foramen, posterior epidural space, cephalad to the L5 vertebral body, and caudally within the sacral canal. Conservative management with pharmacologic therapy, rehabilitation, and a single right L5 and S1 transforaminal epidural steroid injection resulted in gradual symptom resolution. Spine surgery was consulted, but operative intervention was deferred because symptoms improved and no neurologic deficit developed. This case highlights both the diagnostic complexity of sacral insufficiency fractures and the importance of prompt recognition of cement migration after sacroplasty, while supporting nonoperative management in selected patients without neurologic deficit.

Musculoskeletal disorders (MSDs) are among the most common work-related health problems and are frequently associated with prolonged sitting, poor computer workstation ergonomics, and inadequate sleep. This study aimed to determine the prevalence of MSD complaints and examine their associations with computer workstation ergonomics and sleep quality among employees at Jazan University, Saudi Arabia. A cross-sectional study was conducted between December 2024 and April 2025 among 460 university employees selected using a multistage cluster random sampling technique. Data were collected using the Nordic Musculoskeletal Questionnaire, the National Institutes of Health Computer Workstation Ergonomic Self-Assessment Checklist, and the Pittsburgh Sleep Quality Index. Data were analyzed using IBM SPSS Statistics, version 27. MSDs were highly prevalent, with the low back (65.9%), neck (65.0%), shoulders (57.2%), and upper back (46.3%) being the most commonly affected body regions, whereas the elbows were the least affected (16.7%). Male employees had significantly lower odds of hip pain (odds ratio [OR] = 0.22, 95% confidence interval [CI]: 0.07-0.66) and ankle pain (OR = 0.34, 95% CI: 0.13-0.90) than female employees. Compared with employees from the College of Arts and Humanities, those from the College of Science had significantly higher odds of wrist pain (OR = 2.12, 95% CI: 1.07-4.20), elbow pain (OR = 2.45, 95% CI: 1.09-5.53), and ankle pain (OR = 2.48, 95% CI: 1.15-5.33). Poor sleep quality was independently associated with increased odds of neck pain (OR = 1.13, 95% CI: 1.03-1.24), upper-back pain (OR = 2.47, 95% CI: 1.08-5.67), and knee pain (OR = 4.28, 95% CI: 1.70-10.80). In addition, poor workstation ergonomics were independently associated with several MSDs after adjustment for potential confounders. MSDs were highly prevalent among university employees and were independently associated with poor workstation ergonomics and poor sleep quality. These findings highlight the importance of implementing workplace ergonomic interventions and employee wellness programs to reduce the burden of MSDs. Future longitudinal studies are needed to evaluate the effectiveness of ergonomic and sleep-related interventions and to further investigate the contributions of occupational stress and screen time to MSD risk.