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Erschienen in:

01.04.2019 | original article

Sexual dimorphism in the anatomy of the ulnar collateral thumb ligament

verfasst von: Martin F. Vierhapper, MD, Gabriela K. Muschitz, MD, PhD, Stefan Hacker, MD, Sandra E. Boesmueller, MD, PhD, Michael Pretterklieber, MD, PhD, Hugo B. Kitzinger, MD, PhD

Erschienen in: Wiener klinische Wochenschrift | Ausgabe 9-10/2019

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Summary

Background

Treatment of ruptured ulnar collateral thumb metacarpophalangeal (MCP) joint ligaments (UCL) necessitate a profound anatomic knowledge for optimal surgical repair in order to preserve range of motion and ensure postoperative joint stability. Therefore, knowledge of the angle between the UCL and the longitudinal axis of the first metacarpal bone could be useful.

Methods

In this study 46 ulnar collateral thumb MCP joint ligaments in 15 male and 15 female embalmed anatomic specimens were dissected and the angles between the longitudinal axis of the first metacarpal bone and the proper (PUCL) as well as the accessory ulnar collateral thumb MCP ligament (AUCL) were measured.

Results

In male specimens the angle for the PUCL measured on average 133.5° (±2.35°) and 122.75° (±3.8°) for the AUCL. A significantly different angle was measured for female specimens which showed on average 137.88° (±3.51°) for the PUCL and 128.65° (±4.14°) for the AUCL.

Conclusions

Optimal surgical repair or reconstruction of torn ulnar collateral thumb MCP joint ligaments should aim for an angle of approximately 135° in PUCL and 126° in AUCL in relation to the longitudinal axis of the metacarpal bone. Differences in men and women should be considered if possible.

Level of evidence

IV (anatomic study).
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Metadaten
Titel
Sexual dimorphism in the anatomy of the ulnar collateral thumb ligament
verfasst von
Martin F. Vierhapper, MD
Gabriela K. Muschitz, MD, PhD
Stefan Hacker, MD
Sandra E. Boesmueller, MD, PhD
Michael Pretterklieber, MD, PhD
Hugo B. Kitzinger, MD, PhD
Publikationsdatum
01.04.2019
Verlag
Springer Vienna
Erschienen in
Wiener klinische Wochenschrift / Ausgabe 9-10/2019
Print ISSN: 0043-5325
Elektronische ISSN: 1613-7671
DOI
https://doi.org/10.1007/s00508-019-1483-8