Change in the collateral and accessory collateral ligament lengths of the proximal interphalangeal joint using cadaveric model three-dimensional laser scanning

摘要

The purpose of this study was to assess the lengths of the index and middle finger proximal interphalangeal joint ligaments and determine the relative changes in the collateral and accessory collateral ligament lengths at 0 degrees, 45 degrees and 90 degrees flexion. We generated three-dimensional scans of 16 finger (eight index and eight middle) proximal interphalangeal joints to assess relative changes in ligament length. Significant changes were found between 45 degrees-90 degrees and 0 degrees-90 degrees for the ulnar collateral ligament of the index finger and both collateral ligaments of the middle finger between 45 degrees-90 degrees and 0 degrees-90 degrees. No significant changes in length were found for the radial collateral ligament of the index finger or the accessory collateral ligaments of the index and middle fingers. Overall, it was found that the collateral ligament length changed significantly, but there was no significant change in the accessory collateral ligaments. Type of study/level of evidence: Therapeutic IV