PMID: 29755840May 15, 2018Paper

Treatment of mallet finger deformity with a modified palmaris longus tendon graft through a bone tunnel

International Journal of Burns and Trauma
Zengbing LiuDong Huang

Abstract

To investigate the clinical effect of treating mallet finger deformity using a modified palmaris longus tendon graft through a bone tunnel. Altogether, 21 patients with mallet finger deformity (16 men, 5 women; average age 31 years, range 19-47 years) were treated with a modified palmaris longus tendon graft through a bone tunnel during 18 months (2014-2016). Four index fingers, seven middle fingers, eight ring fingers, and two little fingers were treated for four cutting injuries, eleven finger sprains, four crush injuries, and two twist injuries (7 open and 14 closed injuries). Duration from injury to surgery was 9 h to 13 weeks. Three patients underwent surgery after 6 weeks of unsuccessful conservative treatment. No tendon was attached to the extensor tendon insertion in 16 patients, and 5 had residual tendon of <0.2 cm attached. All patients had distal segment flexion deformity and dorsiflexion disorder. Surgery comprised transverse penetration and vertical drilling of the base of the distal phalanx (2.0 and 2.5 mm diameter drills). Equal shallow semitendinosus pieces of the palmaris longus tendon (4 cm) were obtained from the sagittal end and were passed through a dorsal bone hole, emerging from a transverse bone hole. Th...Continue Reading

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