title: [Long-term evolution following shelf procedure for hip dysplasia in adults. Shelf survival analysis in 68 cases and retrospective review of 44 with at least 26 years follow-up].
abstract: Using Kaplan-Meier's method, the authors found a survival probability of 50% after 25 years in a group of 68 shelf arthroplasties in adult hips. Forty-four shelf procedures, performed at a mean age of 33 years, had sufficient clinical and radiological data to perform a retrospective study with at least 26 years of follow-up. There were 16 dysplastic non-dislocated hips, 19 subluxated hips and 9 dislocated hips. Fifteen shelves (34%) were still in place in 1996 with a mean follow-up of 31.6 years and 29 (66%) underwent reintervention after a mean interval of 20.4 years. The functional result at the latest follow-up, or just prior to reintervention for the reoperated shelves, was good in 13 cases (30%), fair in 28 and poor in 3. Progressive deterioration following shelf procedures was mainly associated with two factors: preoperative congruency (ratio of the largest to smallest joint line thickness), especially if below 0.7, and preoperative osteoarthritis. Reoperation rate climbed from 30% for grade 1 or 2 osteoarthritis, to 73% for grade 3 and to 88% for grade 4. The mean age at the time of reintervention was 54.5 years. Shelf arthroplasties performed for secondary hip osteoarthritis with joint space narrowing (77% in this series) had a mean survival of 20.5 years. The authors believe that a shelf procedure has its place in the conservative surgical management of painful acetabular dysplasia in the adult, even in the presence of osteoarthritis.
authors.affiliation: Service de Chirurgie Orthopédique, CHU de Tours, France.
authors.forename: P
authors.initials: P
authors.lastname: Rosset
authors.forename: B
authors.initials: B
authors.lastname: Heudel
authors.forename: J
authors.initials: J
authors.lastname: Laulan
authors.forename: P
authors.initials: P
authors.lastname: Garaud
authors.forename: L
authors.initials: L
authors.lastname: Favard
mesh_terms: D000077:Acetabulum / Q000002:abnormalities* / Q000601:surgery; D000328:Adult; D018450:Disease Progression; D005260:Female; D006618:Hip Dislocation, Congenital / Q000601:surgery*; D006801:Humans; D008297:Male; D015207:Osteoarthritis, Hip / Q000209:etiology*; D010027:Osteotomy; D012008:Recurrence; D012189:Retrospective Studies; D016019:Survival Analysis; D016896:Treatment Outcome