Carpal Kinematics in Madelung Deformity

Various skeletal and soft tissue abnormalities have been identified in Madelung deformity and have been hypothesized to play a causal role in its progressive symptomatology; however, our pathological understanding of these changes remains limited. In this study, we biomechanically assessed the Madel...

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Veröffentlicht in:The Journal of hand surgery (American ed.) 2021-07, Vol.46 (7), p.622.e1-622.e12
Hauptverfasser: Peymani, Abbas, de Roo, Marieke G.A., Dobbe, Johannes G.G., Streekstra, Geert J., McCarroll, Henry R., Strackee, Simon D.
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Sprache:eng
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Zusammenfassung:Various skeletal and soft tissue abnormalities have been identified in Madelung deformity and have been hypothesized to play a causal role in its progressive symptomatology; however, our pathological understanding of these changes remains limited. In this study, we biomechanically assessed the Madelung deformity wrist, using 4-dimensional computed tomography imaging. Nine Madelung deformity wrists (5 patients; age, 24 ± 5 y) and 18 healthy wrists (9 volunteers; age, 28 ± 3 y) underwent 4-dimensional imaging during flexion-extension motion and radioulnar deviation. Carpal kinematics and radiocarpal joint parameters were quantified and compared. In Madelung deformity wrists, significantly decreased rotation was seen in the lunate (–4.6°) and the triquetrum (–4.8°) during flexion-extension motion. During radioulnar deviation, significant decreases were visible in lunate bone translation (–0.7 mm), triquetrum bone translation (–0.6 mm), and triquetrum bone rotation (–1.9°). Patients had significantly decreased articulating surface areas of the scaphoid (1.4 ± 0.2 cm2 versus 1.6 ± 0.2 cm2) and lunate (1.2 ± 0.4 cm2 versus 1.5 ± 0.3 cm2) fossa, and significantly increased radioscaphoid (1.3 ± 0.1 mm versus 1.2 ± 0.1 mm) and radiolunate (1.6 ± 0.2 mm versus 1.3 ± 0.3 mm) joint space thicknesses. There is a decreased mobility of the lunate and triquetrum bones in Madelung deformity. Four-dimensional imaging could be used in future studies that investigate the effect of surgical ligament release on carpal kinematics and subsequent wrist mobility.
ISSN:0363-5023
1531-6564
DOI:10.1016/j.jhsa.2020.11.016