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Development of a Neonatal Rat Model for Brachial Plexus Birth Injury
Published on: March 27, 2026
Magnetic resonance imaging of obstetrical brachial plexus injuries
Rick Abbott1, Matthew Abbott, Juan Alzate
1Department of Neurosurgery, The Hyman-Newman Institute for Neurology and Neurosurgery, Beth Israel Medical Center, 170 East End Avenue, New York, NY 10128, USA, rabbott@bethisraelny.org
Insights
Magnetic Resonance (MR) imaging effectively identifies brachial plexus lesions in infants with Erb
Area of Science:
- Pediatric Radiology
- Neurology
- Orthopedic Surgery
Background:
- Erb's palsy, a common birth injury, results from damage to the brachial plexus.
- Accurate pre-operative assessment is crucial for effective surgical management of brachial plexus injuries.
Purpose of the Study:
- To evaluate the efficacy of MR imaging in predicting surgical findings in infants diagnosed with Erb's palsy.
- To correlate MR imaging results with intraoperative findings of brachial plexus lesions.
Main Methods:
- A cohort of 15 infants with Erb's palsy underwent surgical exploration of the brachial plexus.
- Preoperative MR imaging was performed using a 1.5-Tesla MRI scanner.
- Surgical findings were documented and compared with the MR imaging results.
Main Results:
- MR imaging detected pseudomeningoceles in 53.3% of patients and posterior shoulder subluxation in 73.3%.
- Abnormalities consistent with neuromas or scar tissue were identified in 93.3% of patients.
- Surgery confirmed entrapment by scar tissue or neuromas in all 15 patients (100%).
Conclusions:
- MR imaging is a valuable tool for identifying brachial plexus lesions in infants with Erb's palsy.
- The imaging modality aids in surgical planning by predicting operative findings, guiding exploration, and confirming the presence of lesions requiring intervention.
Objective:
We reviewed MR imaging in infants with Erb's palsy. The goal was to determine the effectiveness of MR imaging in predicting operative findings for these infants.
Methods:
Fifteen patients (mean age: 14.5 months) underwent surgical exploration of the brachial plexus. Preoperative MR imaging was acquired in all patients with a GE (Milwaukee, WI, USA) 1.5-Tesla MRI and correlated with the surgical findings as outlined in the children's operative notes.
Results:
Through imaging, the presence of at least one pseudomeningocele was found in 8 of the 15 patients (53.3%) while 3 of the 15 patients (20%) had multiple pseudomeningoceles. Posterior shoulder subluxation was seen in 11 patients (73.3%). Fourteen children(93.3%) had imaging abnormalities consistent with either a reparative neuroma or scar tissue investing plexus elements. We were unable to differentiate between the two with MR imaging. At surgery, scar tissue was found entrapping the C5-C6 roots, upper trunk, and/or lateral and posterior cords in 11 patients (73.3%)while 4 patients had reparative neuromas. Two patients had both entrapment by scar tissue and a reparative neuroma. Either entrapment by scar tissue or neuroma was found in all 15 patients (100%).
Conclusions:
MR imaging is an effective tool for demonstrating lesions of the brachial plexus worthy of surgical exploration.
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