gms | German Medical Science

14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT)

17.06. - 21.06.2019, Berlin

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Does Reconstruction of Proximal Pole Scaphoid Nonunions With Hamate Autograft Restore Carpal Kinematics?

Meeting Abstract

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  • presenting/speaker Marion Burnier - Herriot Hospital, Lyon, France
  • Alexander Hooke - Mayo Clinic, Rochester, United States
  • Bassem Elhassan - Mayo Clinic, Rochester, United States
  • Sanjeev Kakar - Mayo Clinic, Rochester, United States

International Federation of Societies for Surgery of the Hand. International Federation of Societies for Hand Therapy. 14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT). Berlin, 17.-21.06.2019. Düsseldorf: German Medical Science GMS Publishing House; 2020. DocIFSSH19-1457

doi: 10.3205/19ifssh0463, urn:nbn:de:0183-19ifssh04631

Veröffentlicht: 6. Februar 2020

© 2020 Burnier et al.
Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung). Lizenz-Angaben siehe http://creativecommons.org/licenses/by/4.0/.

Gliederung

Text

Objectives/Interrogation: The purpose of the current study was to determine whether proximal pole scaphoid nonunion reconstruction with hamate autograft restore carpal kinematics.

Methods: Eight fresh-frozen cadaveric wrists underwent evaluation of their radiocarpal and midcarpal kinematics within the intact state, after fracture of the proximal pole of the scaphoid and after reconstruction of the proximal pole with a hamate autograft. A wrist stimulator was used to apply cyclical load to the flexor carpi ulnaris, flexor carpi radialis, extensor carpi ulnaris, extensor carpi radialis brevis and longus. Kinematic motion was captured using Moiré Phase Tracking 3-dimensional motion-tracking sensors to evaluate the radiolunate, radioscaphoid, scapholunate and lunocapitate angles for each condition.

Results: Proximal hamate reconstruction of the proximal pole after scaphoid fracture significantly improved wrist kinematics (p<0.05). During wrist flexion-extension, hamate to scaphoid reconstruction significantly corrected the abnormal motion of the scaphoid relative to the lunate in the coronal plane (p<0.05 (Figure 1)). During radio-ulnar deviation, the hamate reconstruction corrected the abnormal scaphoid kinematics to the lunate in the sagittal plane (p<0.05) (Figure 2).

Conclusion: After proximal pole scaphoid nonunion, reconstruction with a proximal hamate autograft improves wrist kinematics towards the native intact state.