Rotatory laxity evaluation of the knee using modified Slocum’s test in open magnetic resonance imaging

Abstract

II.

Anterior Cruciate Ligament Function in Providing Rotational Stability Assessed by Medial and Lateral Tibiofemoral Compartment Translations and Subluxations

“…The clinical application is the potential role in the future of magnetic resonance imaging in tracking the medial and lateral compartments separately to study changes in position after ACL reconstruction. 19,31 There are limitations of this study. The in vitro subluxations in the ACL-deficient state do not represent dynamic in vivo loading conditions that involve joint compressive forces and loading profiles that vary from one injury situation to another.…”

Passive Anterior Tibial Subluxation in Anterior Cruciate Ligament–Deficient Knees

“…This is demonstrated by pronounced subluxation of the lateral compartment in the setting of failed ACLR and has been suggested by recent studies evaluating rotational laxity in ACL-deficient knees. 13,20 In light of the recent trend toward anatomic ACLR, these observations raise potential concerns regarding our ability to reestablish a normal tibiofemoral relationship. Excessive anterior tibial subluxation may make it difficult to find the appropriate tunnel positions during ligament reconstruction, and this abnormal position of the tibia raises concerns regarding notch impingement if bone tunnels are placed in the anatomic footprints.…”

Accurate semiautomatic assessment of ligament length variations from MRI data

“…24 For the functional analysis of many ligament complexes, e.g. in the shoulder 15 or the knee 25 the use of open MRI systems which typically have a low field strength is essential. Only with an open bore magnet is sufficient space provided to image the joints under investigation at different positions.…”