Interrater and Intrarater Reliability for Measuring the Length of the Flexor Digitorum Superficialis

John Connor Montemayor^*, David Iodice, Michael Esposito, Lucas Ferreira & Jason Grimes

Department of Physical Therapy and Human Movement Science, Stanford Health Care, USA

Dr. John Connor Montemayor, Bachelor of Medicine and Bachelor of Surgery, Xuzhou Medical University, China.

Keywords: Flexor Pronator Mass; Muscle Length; Forearm Flexor; Goniometer

Abstract

Introduction
Measuring Flexor Digitorum Superficialis (FDS) length can provide information regarding functional gripping, forearm muscle power, and possibly risk of injury. To our knowledge, no study has previously investigated measuring FDS length.
Methods
FDS length was assessed by two examiners in 21 healthy individuals (total of 42 wrists) through
measuring wrist extension range of motion (ROM) in two different positions. Both positions involved elbow extension, forearm pronation, and wrist extension. Position 1 included finger flexion while Position 2 included finger extension. Test outcome was defined as a positive test being less ROM in Position 2 compared to Position 1.

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