Kongenitale oder erworbene Anlage des separaten Faches für die Sehne des M. extensor pollicis brevis bei der Tendovaginitis stenosans de Quervain? Makroanatomische und fetal-plastinationshistologische Untersuchungen zum 1. Strecksehnenfach
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Abstract
<p class="first" id="d21304318e63">Our macroanatomical studies with cadaver specimens
and clinical findings in the operative
treatment of tendovaginitis stenosans de Quervain confirm the high number of anatomical
variations in the first dorsal compartment of the wrist. With the help of thick transparent
transversal-sections in one of 14 fetal wrists manufactured by plastination histology
we found the first compartment with two tendons of the abductor pollicis longus and
dorsal of this compartment a connective tissue formation and a separate compartment
for the extensor pollicis brevis tendon, proved as a primary anatomical disposition.
Macroscopically the septation is always located distal and dorsal-ulnar to the first
compartment and is evidentally more common as an intraoperative than an cadaver dissection
finding and probably should be considered as a pathological condition. The secondary
formation of an incomplete until complete separate septum may depend on the multiple
abductor pollicis longus tendons and on chronical inflammatory reaction of the synovialis
of the constricted extensor pollicis brevis tendon.
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