Influence of Brachial Plexus Birth Injury Location on Glenohumeral Joint Morphology.
Brachial plexus birth injury
glenoid inclination
glenoid version
humeral head morphology
radius of curvature
Journal
The Journal of hand surgery
ISSN: 1531-6564
Titre abrégé: J Hand Surg Am
Pays: United States
ID NLM: 7609631
Informations de publication
Date de publication:
06 2021
06 2021
Historique:
received:
25
06
2019
revised:
12
08
2020
accepted:
20
10
2020
pubmed:
29
12
2020
medline:
7
8
2021
entrez:
28
12
2020
Statut:
ppublish
Résumé
Patient presentation after brachial plexus birth injury (BPBI) is influenced by nerve injury location; more contracture and bone deformity occur at the shoulder in postganglionic injuries. Although bone deformity after postganglionic injury is well-characterized, the extent of glenohumeral deformity after preganglionic BPBI is unclear. Twenty Sprague-Dawley rat pups received preganglionic or postganglionic neurectomy on a single forelimb at postnatal days 3 to 4. Glenohumeral joints on affected and unaffected sides were analyzed using micro-computed tomography scans after death at 8 weeks after birth. Glenoid version, glenoid inclination, glenoid and humeral head radius of curvature, and humeral head thickness and width were measured bilaterally. The glenoid was significantly more declined in affected compared with unaffected shoulders after postganglionic (-17.7° ± 16.9°) but not preganglionic injury. Compared with the preganglionic group, the affected shoulder in the postganglionic group exhibited significantly greater declination and increased glenoid radius of curvature. In contrast, the humeral head was only affected after preganglionic but not postganglionic injury, with a significantly smaller humeral head radius of curvature (-0.2 ± 0.2 mm), thickness (-0.2 ± 0.3 mm), and width (-0.3 ± 0.4 mm) on the affected side compared with the unaffected side; changes in these metrics were significantly associated with each other. These findings suggest that glenoid deformities occur after postganglionic BPBI but not after preganglionic BPBI, whereas the humeral head is smaller after preganglionic injury, possibly suggesting an overall decreased biological growth rate in this group. This study expands understanding of the altered glenoid and humeral head morphologies after preganglionic BPBI and its comparisons with morphologies after postganglionic BPBI.
Identifiants
pubmed: 33358583
pii: S0363-5023(20)30615-8
doi: 10.1016/j.jhsa.2020.10.019
pmc: PMC8180483
mid: NIHMS1642638
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
512.e1-512.e9Subventions
Organisme : NICHD NIH HHS
ID : R21 HD088893
Pays : United States
Informations de copyright
Copyright © 2021 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.
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