This article was published online on 14 June 2012. P.J. Barker's affiliation was provided incorrectly and has been updated. This notice is included in the online and print versions to indicate that both have been corrected.
Anatomical and mechanical relationship between the proximal attachment of adductor longus and the distal rectus sheath†
Article first published online: 14 JUN 2012
Copyright © 2012 Wiley Periodicals, Inc.
Volume 26, Issue 4, pages 522–530, May 2013
How to Cite
Norton-old, K. J., Schache, A. G., Barker, P. J., Clark, R. A., Harrison, S. M. and Briggs, C. A. (2013), Anatomical and mechanical relationship between the proximal attachment of adductor longus and the distal rectus sheath. Clin. Anat., 26: 522–530. doi: 10.1002/ca.22116
- Issue published online: 11 APR 2013
- Article first published online: 14 JUN 2012
- Manuscript Accepted: 15 MAY 2012
- Manuscript Revised: 1 MAY 2012
- Manuscript Received: 29 OCT 2011
- athletic groin pain;
- rectus abdominis;
- pubic symphysis;
- strain gage
The objectives of this study were to investigate the anatomical relationship between the proximal adductor longus (AL) and rectus abdominis muscles and to determine whether unilateral loading of AL results in strain transmission across the anterior pubic symphysis to the contralateral distal rectus sheath. Bilateral dissections were conducted on 10 embalmed cadavers. Strain transfer across the pubic symphysis was examined on seven of these cadavers. An AL contraction was simulated by applying a controlled load in the direction of its proximal tendinous fibers, and the resultant strain in the contralateral distal rectus sheath was measured using a foil-type surface mounted microstrain gage. Adductor longus attached to the antero-inferior aspect of the pubis. In 18 of the 20 limbs, the proximal attachment of AL was tendinous on its superficial surface and muscular on its deep surface. The proximal AL tendon was found in most instances to have secondary communications with structures such as the contralateral distal rectus sheath, pubic symphysis anterior capsule, ilio-inguinal ligament, and contralateral proximal AL tendon. Despite these consistent anatomical observations, strain measured in the contralateral distal rectus sheath upon unilateral loading of the proximal AL varied considerably between cadavers. Measured strain had an average ± 1SD of 0.23 ± 0.43%. The proximal attachment of AL contributes to an anatomical pathway across the anterior pubic symphysis that is likely required to withstand the transmission of large forces during multidirectional athletic activities. This anatomical relationship may be a relevant factor in explaining the apparent vulnerability of the AL and rectus abdominis attachments to injury. Clin. Anat. 2013. © 2012 Wiley Periodicals, Inc.