Article

Congenital muscular torticollis (CMT) is known to concur with some conditions
such as developmental dysplasia of the hip or brachial plexus injury, which gives
us some insights for pathogenesis of CMT. Although clavicular fracture is the
most common fracture in newborns, little is known about concurrence of CMT and
clavicular fracture. Our clinical experience led us to realize that concurrence
of CMT and clavicular fracture tended to occur on the contralateral side for each
other rather than the ipsilateral side. This study aimed to verify contralateral
concurrence of CMT and clavicular fracture. This is a retrospective cohort study
in a tertiary hospital, including 996 subjects with CMT. Concurrent clavicular
fracture was found in 20 of 996 subjects with CMT, with the concurrence rate
being 2.01%. Concurrent clavicular fracture and clavicular fracture occurred on
the contralateral side for each other in 18 subjects (90%) rather than the
ipsilateral side. This contralateral concurrence between side of CMT and
clavicular fracture was significant (P = 0.001), with an odds ratio of 81 (P =
0.0032). Concurrent clavicular fracture and clavicular fracture seem to occur
significantly more on the contralateral side for each other. Underlying mechanism
for consistent contralateral concurrence needs to be verified in the near future.

Langue : ANGLAIS