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Journal of Hand Surgery (British and European Volume)
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Articles

Functional Anatomy of the Lateral Collateral Ligament Complex of the Elbow: Morphology and Strain

N. TAKIGAWA
J. RYU
V. L. KISH
M. KINOSHITA
M. ABE

From the Department of Orthopedic Surgery, Osaka Medical College, Osaka, Japan and the Department of Orthopedic Surgery, West Virginia University, HSC, West Virginia, USA

Correspondence: Dr Naohide Takigawa, MD, Department of Orthopedic Surgery, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan. Tel.: +81 72 683 1221; fax: +81 72 683 6265. E-mail: n-takky{at}pg7.so-net.ne.jp

The anatomy of the lateral ulnar collateral ligament (LUCL) of the elbow was investigated in 26 fresh frozen cadavers. Two types of insertion of the LUCL were originally described but we found another type which is characterized by a broad single expansion along with a thin membranous fibre. Strain on the LUCL was measured in situ during extension and flexion with the forearm in supination, pronation and neutral. Strain in the proximal fibres started to occur at around 32° flexion and peaked at between 50° and 60° flexion. Strains measured in the distal fibres were smaller in magnitude. Forearm rotation had little effect on strain during extension to flexion. Based on these results, we conclude that the LUCL functions in unison with the annular ligament.

Key Words: lateral collateral ligament complex • elbow joint • morphology • strain • posterolateral rotatory instability

Journal of Hand Surgery (British and European Volume), Vol. 30, No. 2, 143-147 (2005)
DOI: 10.1016/J.JHSB.2004.09.016
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