Internal brace augmentation improves the biomechanical properties of trapeziometacarpal joint dorsoradial ligament repair.
Hand Surg Rehabil
; 43(2): 101643, 2024 Apr.
Article
em En
| MEDLINE
| ID: mdl-38228245
ABSTRACT
This study investigated whether dorsoradial ligament repair with internal brace augmentation provided more immediate stability in the trapeziometacarpal joint than dorsoradial ligament repair alone. Seven matched pairs of cadaveric hands were used. One specimen from each pair was assigned to the repair-only group and the other to the repair + internal brace augmentation group. Trapeziometacarpal joint range of motion and translation were quantified under different conditions for both groups (1) intact, (2) transected dorsoradial ligament, and (3) repaired dorsoradial ligament or repaired dorsoradial ligament plus internal brace augmentation. Load-to-failure tests were performed after repair. Range of motion and translation were increased by dorsoradial ligament transection and were decreased by dorsoradial ligament repair; however, compared to the intact condition, the repair-only group demonstrated greater flexion/extension range, while the repair + internal brace group showed no significant difference in range of motion. Mean loads at 2- and 3-mm displacements were greater in the repair + internal brace group than in the repair-only group (18.0 ± 1.8 N vs. 10.8 ± 1.3 N for 2 mm displacement and 35.3 ± 3.7 N vs. 23.1 ± 2.9 N for 3 mm displacement, respectively). Internal brace augmentation improved the load-to-failure characteristics of dorsoradial ligament repair without compromising range of motion. LEVEL OF EVIDENCE IV.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Braquetes
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Cadáver
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Amplitude de Movimento Articular
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Articulações Carpometacarpais
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Ligamentos Articulares
Limite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Hand Surg Rehabil
Ano de publicação:
2024
Tipo de documento:
Article