Contribution of magnetic resonance imaging for the diagnosis of median nerve lesion after endoscopic carpal tunnel release.

Deterioration of pre-existing signs or appearance of a nerve deficit raise difficult problems during the complicated course following endoscopic carpal tunnel release. One possible explanation is transient aggravation of nerve compression by passage of the endoscopy material, but these signs may also be due to incomplete section of the flexor retinaculum or an iatrogenic nerve lesion. Each case raises the problem of surgical revision.

Closed ruptures of the flexor digitorum tendons: MRI evaluation.

Objective: To assess the MRI findings in cases of closed rupture of the flexor digitorum tendons (FDT).

Patients And Design: Ten patients with a clinical suspicion of rupture of FDT underwent MRI before surgery. None of the patients presented a skin injury.

Median nerve suture in the distal part of the forearm. MRI evaluation.

The aim of the study was to assess MR images of median nerve suture in the distal part of the forearm on fresh cadavers and injured patients. The median nerve was dissected in the distal one-third of the forearm in four fresh cadaveric specimens, divided and repaired in three of them in two cases with 3/0 nylon (one with well-apposed edges and the other with a lateral gap) and, in the third specimen, with 9/0 nylon with well apposed edges. The course of the median nerve was then studied on MR imaging in different planes and the quality of the nerve repair was evaluated.

[Imaging of external instabilities of the patella. State of the art].

External femoropatellar instability is a dynamic abnormality from various origins: osseous, cartilaginous or musculotendinous; X-rays films cannot give a precise enough description of this phenomenon. Attention is drawn by anterior pain or a sensation of instability. Clinical analysis distinguishes between permanent, traumatic or transient dislocations which are now more frequently discovered as part of a femoro-patellar syndrome with or without cartilage involvement.

Complications of flexor tendon repair in the hand: MR imaging assessment.

Purpose: To determine if magnetic resonance (MR) imaging enables differentiation of adhesions from tendon rupture after repair of digital flexor tendon injuries.

Materials And Methods: The reference group comprised eight tendon sutures with a good clinical outcome. Axial and sagittal spin-echo sequences and three-dimensional gradient-echo sequences with curved reconstructions were analyzed in 63 injured fingers.