The Journal of Bone and Joint Surgery, Vol 70, Issue 7 1061-1066, Copyright © 1988 by Journal of Bone and Joint Surgery, Inc
Orthopaedic aspects of central core disease
JG Gamble, LA Rinsky and JH Lee
Children's Hospital at Stanford, Palo Alto, California 94304.
We studied the cases of fifteen patients who had central core disease, a
non-progressive congenital myopathy that is usually inherited as an
autosomal dominant trait. As infants, the patients had poor muscle tone and
developmental delay, and as adolescents and adults, they had varying
degrees of proximal muscle weakness and tended to use the Gower maneuver.
The most common musculoskeletal problems were dislocation or subluxation of
the hip, pes planus, and hypermobility of the joints. The most serious
orthopaedic problems were in the hips: ten patients had a total of nine
dislocations and six subluxations, nine being present at birth and six
developing later. Only nine hips were stable after the initial treatment,
and there was a propensity for hip-joint contractures. Scoliosis and
patellar instability were also seen. Although patients who have central
core disease have been reported to be at increased risk for malignant
hyperthermia, this did not occur in our patients.