Innervation Patterns of the Pronator Teres Muscle and Their Possible Role in Neurotization: A Systematic Review of Cadaveric Studies

Background: Contrary to the classic anatomical description, many recent studies have reported wide variations in branching patterns and location of motor branches that are supplying pronator teres muscle. To understand these their implications surgical procedures nerve transfers, a systematic review was performed on innervation muscle from cadaveric studies.Methods: A literature search databases such as Medline, PubMed, Google Scholar, SciELO, ScienceDirect, Cochrane reviews orthopedics textbooks using terms “pronator branches”; AND “number” OR “location” “length” “diameter” yielded 545 article links. Articles were evaluated according PRISMA guidelines. Results: total twenty including 648 registered 52.9% two branch pattern followed by 31.3%-single pattern; 13.5%-three 1.7%-four pattern, 0.4%-five patterns, respectively. Of 403 studied for relation with humeral intercondylar line, most located distal line (50.3%), 32.7% (proximal it) 16.8% at The distance proximal range 1.25–10 cm, 1.1–7.5 mean length diameter nerves 4.37 ± 2.43 1.5 mm, Conclusions: Our data defined morphometrics they often met required neurotization procedures. findings also demonstrated morphometrics, vary between populations this information is very vital surgeons during transfers.