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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