This is a plain-English translation of the academic paper above, prepared for patients, referring clinicians, and other non-specialist readers. It preserves the structure of the original paper while removing technical jargon. For the full clinical paper, follow the PubMed or DOI links.
Background
Whether a deep wrist muscle called the pronator quadratus (PQ) — which lies right over the front of the lower forearm bone — can be moved out of the way and protected during surgery to fix a broken wrist, instead of being cut through entirely.
Rationale
The standard surgical approach to fix a broken wrist with a plate involves dividing this muscle to reach the bone. The PQ helps the wrist turn the palm down, and surgeons have wondered for years whether sparing the muscle — rather than cutting it — might preserve more strength after healing.
Results
In 20 cadaveric forearms, lifting the lower edge of the muscle (rather than cutting it) more than doubled the length of bone that could be exposed for plate placement. The exposure was sufficient to position a modern plate and place locking screws across the joint surface for almost all of the volar plating systems on the market.
Implications
For most modern plates used to fix broken wrists, the surgeon does not need to divide the pronator quadratus muscle. They can lift its lower margin, reach the bone, fix the fracture, and lay the muscle back over the plate. This may help preserve grip and forearm-twisting strength during recovery, although clinical studies are needed to prove that.
Source: Heidari N, Clement H, Kosuge D, Grechenig W, Tesch NP, Weinberg AM. Is sparing the pronator quadratus muscle possible in volar plating of the distal radius?. Journal of Hand Surgery: European Volume 2012;37(5):402-6. doi:10.1177/1753193411424706
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