Mannerfelt Syndrome Workup

Updated: Apr 26, 2021
  • Author: Dimitrios Danikas, MD, FACS; Chief Editor: Harris Gellman, MD  more...
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Imaging Studies

Plain radiography can reveal only gross radiocarpal changes. Because of wrist stiffness, an axial projection of the carpal tunnel is not easy to obtain.

Linear tomography does not show sufficient detail. Mannerfelt used circular tomography with an angle of 42°. The tomographic plane was perpendicular to the long axis of the forearm, and an axial projection of the carpal tunnel was obtained. This method revealed the carpal tunnel floor and the opposing aspects of the hamate hook and trapezium.

Magnetic resonance imaging (MRI) can accurately depict the level of rupture and the gap between the tendon ends. It also reveals the appearance of the adjacent tendons. Thus, MRI may assist the surgeon in choosing a treatment approach (eg, suture, graft, or tendon transfer). [24]

Color Doppler imaging may prove to be a useful means of assessing FPL tendon attrition. [25]