High-frequency ultrasonographic examination of the finger pulley system.

Objective: The purpose of this study was to determine the ability of high-frequency ultrasonography to provide for direct evaluation of the annular and cruciform finger pulley system.

Methods: In the first part of the work, a cadaveric study was performed to outline the normal anatomy of the annular and cruciform finger pulley system. Eighteen cadaveric hands were cut (n = 10) or dissected (n = 8).

The posterior lumbar ramus: CT-anatomic correlation and propositions of new sites of infiltration.

Background And Purpose: Lumbar zypapophyseal joints are innervated by the medial branch of the posterior lumbar ramus. The aim of this work was to describe the precise course of the medial ramus on axial CT scans and to define a precise location for its selective infiltration.

Methods: Lumbar spines of two cadavers were first dissected to assess the route of the L1-L5 posterior ramus.