Article

Dysplasia of the hip increases the risk of secondary
degenerative change and subsequent total hip replacement. Here we report on age at diagnosis of dysplasia, previous treatment, and quality of life for patients
born after 1967 and registered with a total hip replacement due to dysplasia in
the Norwegian Arthroplasty Register. We also used the medical records to validate
the diagnosis reported by the orthopedic surgeon to the register. METHODS:
Subjects born after January 1, 1967 and registered with a primary total hip
replacement in the Norwegian Arthroplasty Register during the period 1987-2007 (n
= 713) were included in the study. Data on hip symptoms and quality of life
(EQ-5D) were collected through questionnaires. Elaborating information was
retrieved from the medical records. RESULTS: 540 of 713 patients (76%)
(corresponding to 634 hips) returned the questionnaires and consented for
additional information to be retrieved from their medical records. Hip dysplasia
accounted for 163 of 634 hip replacements (26%), 134 of which were in females
(82%). Median age at time of diagnosis was 7.8 (0-39) years: 4.4 years for
females and 22 years for males. After reviewing accessible medical records, the
diagnosis of hip dysplasia was confirmed in 132 of 150 hips (88%).
INTERPRETATION: One quarter of hip replacements performed in patients aged 40 or
younger were due to an underlying hip dysplasia, which, in most cases, was
diagnosed during late childhood. The dysplasia diagnosis reported to the register
was correct for 88% of the hips.

Langue : ANGLAIS