Linburg–Comstock variation and syndrome. A meta-analysis
Introduction Linburg–Comstock variation often connecting the flexor pollicis longus and flexor digitorum profundus of the index finger at a different level with significant discrepancy between clinical and cadaveric frequencies reported in the literature. Although this variation is quite prevalent,...
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2017
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| Online Access: | http://hdl.handle.net/10725/10978 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://link.springer.com/article/10.1007/s00276-017-1957-1 |
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| Summary: | Introduction Linburg–Comstock variation often connecting the flexor pollicis longus and flexor digitorum profundus of the index finger at a different level with significant discrepancy between clinical and cadaveric frequencies reported in the literature. Although this variation is quite prevalent, it is yet frequently unrecognized. The aim of this meta-analysis is to generate more accurate weighted frequency values of the Linburg–Comstock variation and to look for possible association with ethnicity, laterality, gender and side. Methods A systematic literature search identified 14 studies, including 4132 forearms/hands, which met the inclusion criteria. Results While no significant difference was found for laterality, we found significantly higher Linburg–Comstock variation rate in females compared to males. Turkish population demonstrated a significantly higher crude frequency when compared to Europeans (22.2 vs. 15.2%). Hispanic population showed the highest crude frequency (34.5%), whereas the African ancestry showed the least one (8.8%). Conclusions Linburg–Comstock variation could cause career-threatening disabilities and could complicate some hand injuries as well. This review invites future researchers to use a single nomenclature; the term “Linburg–Comstock variation” is to be used when no symptoms are present, and the term “Linburg–Comstock syndrome” in cases where the variation is symptomatic. |
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