Publications by authors named "Renato Sernik"
High-frequency US provides excellent visualization of superficial structures and lesions, is a preferred diagnostic modality for anatomic characterization of neck abnormalities, and has a central role in clinical decision making. Recent technological advancements have led to the development of transducers that surpass 20 MHz, elevating high-frequency US to a highly valuable diagnostic tool with broader clinical use and enabling greater spatial resolution in the assessment of skin and superficial nerves and muscles. The authors focus on evolving applications of high-frequency US in neck imaging, emphasizing practical insights and strategies in skin and neuromuscular applications.
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- Sarcopenia refers to the loss of muscle mass and strength, while frailty indicates increased vulnerability in elderly individuals, but their interrelationship isn't well understood in surgical contexts.
- An observational study was conducted on 125 elderly patients undergoing non-emergency surgery to assess frailty (using a modified index) and sarcopenia (through muscle thickness, handgrip strength, and gait speed), along with tracking postoperative complications for a year.
- Results showed 12% of participants were frail and 14% had sarcopenia; frailty was linked to advanced age, polypharmacy, multimorbidity, and poorer surgical outcomes, including increased hospital stays and complications.
Objective: To quantify the shear velocity and stiffness of the median nerve (MN) with shear wave elastography (SWE) at the carpal tunnel entrance and determine whether SWE is useful for diagnosing and staging carpal tunnel syndrome (CTS).
Materials And Methods: The study included 58 patients (79 wrists) with clinical and electroneuromyographic diagnoses of CTS and 55 healthy controls (63 wrists). MN shear velocity and stiffness were measured by SWE on the axial plane in both groups.
Objective: To correlate the thickness of the axillary recess capsule measured by ultrasound with magnetic resonance imaging signs of adhesive capsulitis in patients with shoulder pain.
Materials And Methods: We prospectively evaluated 193 consecutive patients (141 women and 52 men, aged 40-69 years) with shoulder pain lasting 1-9 months from January 2015 to December 2016 who underwent shoulder ultrasound. All participants had routine shoulder ultrasound with additional measurement of axillary recess capsule thickness.
Purpose: To characterize the motor control of the masseter and temporal muscles and the morphology of the masseter muscles during mastication in individuals with normal occlusion and to verify the consistency between surface electromyography (sEMG) and ultrasound (USD).
Methods: Participants were 22 adults, of both genders, with no alterations of the oral myofuntional system. The procedures performed included sEMG of the masseter (MM) and temporal (TM) muscles and USD of the MM, each during three tasks: resting condition and maximum voluntary dental clench with and without cotton rolls.
Background: recent studies have used ultrasonography with the purpose of measuring muscle cuts.
Aim: to characterize the motor control and the morphology of the masseter muscle in normal individuals, verifying the compatibility between surface electromyography and ultrasonography.
Method: five adult individuals, with no alterations of the stomatognathic system.
Purpose: The purpose of the study was to examine the most adequate cut-off point for median nerve cross-sectional area and additional ultrasound features supporting the diagnosis of carpal tunnel syndrome (CTS).
Material And Methods: Forty wrists from 31 CTS patients and 63 wrists from 37 asymptomatic volunteers were evaluated by ultrasound. All patients were women.
Objective: To evaluate the inter- and intrareader variability for interpretation of a modified Larsen's radiographic classification system for juvenile rheumatoid arthritis (JRA) focused on osteochondral lesions and a conventional Larsen's classification system, compared to a reference MR scoring system of corresponding images.
Materials And Methods: Seventy-five radiographs of 60 children with JRA, performed within a short interval of time from the MR examinations, were independently evaluated by three experienced radiologists, three diagnostic imaging residents and three rheumatologists, in two separate sessions, according to the two different classification methods, blinded to the corresponding MR images.
Results: The inter- and intrareader concordance rates between the two radiographic classification systems and the MR-related radiographs were respectively poor and poor/moderate.