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Obstetrical brachial plexus palsy. Prediction of outcome in upper root injuries
A Nehme1, J Kany, J Sales-De-Gauzy
1Department of Paediatric Orthopaedic Surgery, Hospital des Enfants, Toulouse, France. inehme@club-internet.fr
Insights
Obstetrical brachial plexus palsy outcomes are better predicted by combining elbow flexion recovery and birthweight. Early C7 involvement with poor elbow flexion may indicate need for brachial plexus reconstruction.
Area of Science:
- Pediatric Orthopedics
- Neurology
- Neonatal Care
Background:
- Obstetrical brachial plexus palsy (OBPP) is a common birth injury.
- Upper root (C5-C6) involvement is frequent, impacting arm function.
- Predicting long-term outcomes is crucial for timely intervention.
Purpose of the Study:
- To identify reliable early predictors of functional recovery in OBPP.
- To evaluate the combined predictive value of clinical and demographic factors.
- To guide decisions regarding surgical intervention for OBPP.
Main Methods:
- Retrospective review of 30 cases of obstetrical brachial plexus palsy.
- Analysis of C5-C6 and C5-C6-C7 palsies.
- Assessment of recovery milestones (elbow flexion) and birthweight.
Main Results:
- Elbow flexion recovery at 3 months, C7 involvement, and high birthweight were initial predictors.
- Combining elbow flexion recovery (at 9 months) and birthweight provided satisfactory outcome prediction (13% error).
- Initial C7 involvement with high birthweight and poor elbow flexion at 6-9 months suggested potential need for reconstruction.
Conclusions:
- Combined assessment of elbow flexion recovery and birthweight improves OBPP outcome prediction.
- Early indicators, particularly when analyzed together, can guide treatment strategies.
- Brachial plexus reconstruction may be warranted in specific cases with poor prognostic indicators.
Abstract:
Thirty obstetrical brachial plexus palsies involving the upper roots were retrospectively reviewed. There were 20 C5-C6 palsies and ten C5-C6-C7 palsies in which recovery of C7 occurred by the end of the first month. Recovery of elbow flexion at 3 months, C7 involvement and high birthweight were the best early predictors of outcome, but all were unreliable when used separately. In combination, recovery of elbow flexion and birthweight predicted the final outcome reasonably satisfactorily, particularly when elbow flexion at 9 months, and not 3 months was considered (risk of error = 13%). Brachial plexus reconstruction may therefore be justified when there was initial C7 involvement associated with increased birthweight and poor elbow flexion at 6-9 months.