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Tether Creation Between the Second and Third Extensor Digitorum Communis for Third Extensor Tendon Subluxation at the Metacarpophalangeal Joint

Shiode, Ryoya, MD*; Moritomo, Hisao, MD, PhD

Techniques in Hand & Upper Extremity Surgery: December 2018 - Volume 22 - Issue 4 - p 146–149
doi: 10.1097/BTH.0000000000000208

We developed a substitution technique for a sagittal band reconstruction for subluxation of the third extensor tendon at the metacarpophalangeal joint. Through this procedure, we attempted to supply a tether between the second and third extensor digitorum communis (EDC) tendons. A half-slip of the second EDC was interlaced to the third EDC tendon at the level of the third metacarpal head with the metacarpophalangeal joint in full flexion position; this ensured that the interlace of the graft serves as a direct stabilizer against ulnar subluxation. A key advantage of our procedure is the strong and reliable interlace of the graft that does not require postoperative immobilization and allows unprotected motion protocol.

*Yukioka Hospital Hand Center

Yukioka Hospital Hand Center, Osaka Yukioka College of Health Science, Kita-ku, Osaka-shi, Osaka, Japan

Conflicts of Interest and Source of Funding: The authors report no conflicts of interest and no source of funding.

Address correspondence and reprint requests to Hisao Moritomo, MD, PhD, Yukioka Hospital Hand Center, Osaka Yukioka College of Health Science, 2-2-3 Ukita, Kita-ku, Osaka-shi, Osaka 530-0021, Japan. E-mail:

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