Athletic Training & Sports Medicine Center

 

Examination Links:

 

Flexor Digitorum Profundus Test

Examination type Tendon pathology/integrity
Patient & Body Segment Positioning Patient is sitting with the involved hand palm up and supported on a table.
Examiner Position Examiner sits in front of the patient and uses one hand to hold the uninvolved fingers in extension against the table surface while using the other hand to stabilize the involved finger just below the DIP joint.
Performing the Test The examiner isolates the distal interphalangeal joint by holding the metacarpophalangeal and proximal interphalangeal joints of the finger being tested in extension. The patient then tries to actively flex the finger at the distal interphalangeal joint.
Tissues Being Tested Flexor Digitorum Profundus Tendon
Positive Test Inability to flex the DIP joint of the involved finger
Interpretation May indicate either a rupture of the flexor digitorum profundus tendon or an avulsion of the tendon from it’s attachment to the phalanx
Common errors in performing exam Not isolating the distal interphalangeal joint
Factors possibly resulting in misinterpretation Injury to the flexor digitorum profundus muscle or the nerve innervating the muscle may also result in the inability to flex the finger at the DIP joint.
Related tests Sweater Finger Sign
References

Magee, David (2002) Orthopedic Physical Assessment. Philadelphia, Saunders.

Hoppenfeld, Stanley (1976) Physical Examination of the Spine & Extremities Prentice-Hall
Links:

http://medinfo.ufl.edu/year1/bcs/clist/extrem.html#AA21

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