Outcomes of Oberlin Transfer in Elderly Patients: A Case Series.

Objective: A case series analysis was performed of upper brachial plexus injuries (BPIs) from low-impact trauma in patients ≥60 years old to assess the effectiveness of nerve transfers, particularly the Oberlin technique, in restoring elbow flexion and to refine clinical decision making for managing traumatic BPIs in this age group.

Methods: Between 2013 and 2024, 11 patients aged 60-72 with traumatic upper BPIs underwent Oberlin technique for elbow flexion; all were evaluated with consistent postsurgical criteria.

Results: Trauma mechanisms included falls (55%), direct trauma (27%), knife wounds (9%), and stretching (9%), with no high-impact trauma cases.

Brachial plexus peripheral nerve sheath tumors (PNSTs): clinical and surgical management in the pediatric population.

Purpose: Peripheral nerve sheath tumors (PNSTs) are rare in pediatric patients, especially in the brachial plexus. Research on PNSTs is lacking. This article presents a retrospective cohort study of pediatric patients diagnosed and treated with PNSTs, specifically brachial plexus tumors.

Thermodynamic stability at phase coexistence.

The main point we address in this paper is the question of thermodynamic stability for phase-separating systems, at coexistence in equilibrium. It has long been known that numerical simulations of different statistical models may yield "Van der Waals-like" isotherms in the coexistence region. Such "inverted" convexity segments of thermodynamic fields, known as unstable, are forbidden by the second law of thermodynamics on entropy, and their presence is not justified in exact results.