Periacetabular osteotomy for acetabular dysplasia in patients older than 40 years: a preliminary study.
The functional outcomes of periacetabular osteotomy (PAO) and factors predicting outcome in the older patient with acetabular dysplasia are not well understood. We therefore retrospectively determined the functional outcome of 70 patients (87 hips) over age 40 treated with PAO in three institutions; we also determined whether preoperative factors, particularly the presence of osteoarthritis, influenced the survival of the hip or time to total hip arthroplasty after PAO. The average age at surgery was 43.6 years. The minimum followup was 2 years (mean, 4.9 years; range, 2-13 years). Twenty-one hips (24%) had undergone total hip arthroplasty (THA), at a mean of 5.2 years after PAO (range, 1.9-7.6 years). Surviving hips had a mean improvement in Harris hip score from 60.7 to 90.3 and in total WOMAC pain score from 8.7 to 3. We observed no differences in preoperative or postoperative radiographic measurements or preoperative clinical function scores (HHS, WOMAC) in hips surviving and hips having THA. The risk of THA at 5 years after PAO was 12% in hips with preoperative Tönnis Grade 0 or 1 and 27% for Tönnis Grade 2. Our preliminary study suggests that PAO will give satisfactory functional and pain scores in patients over age 40 having dysplastic hips with mild or no arthrosis.
Adolescent and Young Adult Hip Unit, Children's Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA. michael.millis@childrens.harvard.edu
Michael B
MB
Millis
Michael
M
Kain
Rafael
R
Sierra
Robert
R
Trousdale
Michael J
MJ
Taunton
Young-Jo
YJ
Kim
Scott B
SB
Rosenfeld
Ganesh
G
Kamath
Perry
P
Schoenecker
John C
JC
Clohisy
D000077:Acetabulum / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D000328:Adult; D000375:Aging; D019644:Arthroplasty, Replacement, Hip; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery; D010027:Osteotomy / Q000379:methods*; D010146:Pain / Q000209:etiology / Q000503:physiopathology; D011183:Postoperative Complications; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012189:Retrospective Studies; D012720:Severity of Illness Index