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Fig. 3 | BMC Musculoskeletal Disorders

Fig. 3

From: Evaluation of the first annular pulley stretch effect under isometric contraction of the flexor tendon in healthy volunteers and trigger finger patients using ultrasonography

Fig. 3

Schema of pattern B with the metacarpophalangeal joint of the middle finger flexed at 45° under isometric contraction of the flexor tendon. The examiner pushes the middle finger toward the dorsal side during the examination. An active flexor tendon contraction force and a counteracting flexor tendon force can generate contact force that expands the first annular (A1) pulley toward the palm side

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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