Commons splints used for hand injuries/surgeries. A Commons splints used for hand injuries/surgeries. A. Ulnar gutter splint. The ring and small fingers are included. The surgeon pushes on the dorsum of the fingers with the distal hand to produce interphalangeal (IP) joint extension and metacarpophalangeal (MP) joint flexion to 90°, while the proximal hand controls wrist position. B. Dorsal four-finger splint. As with the ulnar gutter splint, finger MP joints are flexed to 90° with IP joints kept fully extended. C. Thumb spica splint. One easy method to fabricate is to place one slab of plaster radially over the wrist and thumb with a second square of plaster over the thenar eminence, which joins the first. In this patient, the IP joint was not included. For injuries at, or distal to, the MP joint, the IP should be included in the splint. Source: Surgery of the Hand and Wrist, Schwartz's Principles of Surgery, 10e Citation: Brunicardi F, Andersen DK, Billiar TR, Dunn DL, Hunter JG, Matthews JB, Pollock RE. Schwartz's Principles of Surgery, 10e; 2014 Available at: http://accesssurgery.mhmedical.com/DownloadImage.aspx?image=/data/books/980/bru_ch44_f013a-c.png&sec=100405551&BookID=980&ChapterSecID=59610886&imagename= Accessed: October 01, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved