WEBVTT

00:00:00.000 --> 00:00:03.090
(English captions by Jade Cheng from the University of Michigan)

00:00:03.090 --> 00:00:07.220
Isolate the distal interphalangeal joint over
the edge of the table and observe for flexion

00:00:07.220 --> 00:00:09.740
at this joint to perform the Boyes' test.

00:00:09.740 --> 00:00:14.260
Inability to flex at the DAP may indicate
a partial or complete tear of the flexor digitorum

00:00:14.260 --> 00:00:16.770
profundus, also known as Jersey finger.