Although atlantoaxial rotatory fixation (AARF) is a common cause
of torticollis in children, the diagnosis may be delayed. The condition
is characterised by a lack of rotation at the atlantoaxial joint
which becomes fixed in a rotated and subluxed position. The management of
children with a delayed presentation of this condition is controversial.
This is a retrospective study of a group of such children. Children who were admitted to two institutions between 1988 and
2014 with a diagnosis of AARF were included. We identified 12 children
(four boys, eight girls), with a mean age of 7.3 years (1.5 to 13.4),
in whom the duration of symptoms on presentation was at least four weeks
(four to 39). All were treated with halo traction followed by a
period of cervical immobilisation in a halo vest or a Minerva jacket.
We describe a simple modification to the halo traction that allows
the child to move their head whilst maintaining traction. The mean follow-up
was 59.6 weeks (24 to 156).Aims
Patients and Methods
Most children with spastic hemiplegia have high levels of function and independence but fixed deformities and gait abnormalities are common. The classification proposed by Winters et al is widely used to interpret hemiplegic gait patterns and plan intervention. However, this classification is based on sagittal kinematics and fails to consider important abnormalities in the transverse plane. Using three-dimensional gait analysis, we studied the incidence of transverse-plane deformity and gait abnormality in 17 children with group IV hemiplegia according to Winters et al before and after multilevel orthopaedic surgery. We found that internal rotation of the hip and pelvic retraction were consistent abnormalities of gait in group-IV hemiplegia. A programme of multilevel surgery resulted in predictable improvement in gait and posture, including pelvic retraction. In group IV hemiplegia pelvic retraction appeared in part to be a compensating mechanism to control foot progression in the presence of medial femoral torsion. Correction of this torsion can improve gait symmetry and function.
