Association between Sub-Clinical Acetabular Dysplasia and a Younger Age at Hip Arthroplasty in Idiopathic Osteoarthritis

Abstract

This retrospective study was designed to investigate whether sub-clinical acetabular dysplasia, defined by a reduced centre-edge angle of Wiberg, was associated with a younger age at hip arthroplasty in patients with idiopathic osteoarthritis (OA). Fifty-four patients with 69 performed arthroplasties and no previous referral for hip dysplasia were selected from a list of consecutive recipients of hip endoprostheses due to idiopathic OA. The centre-edge angle was measured from standard pelvic radiographs taken a mean of 5.1 years prior to the endoprosthesis operation when there were minimal signs of hip OA. The age at which hip arthroplasty was carried out was compared between those patients with low (20° − 35°) and those with high (≥ 35°) centre-edge angles. The mean age at hip arthroplasty was significantly younger in the group with centre-edge angles of 20° − 35° (65.6 years) compared with those with centre-edge angles ≥ 35° (69.2 years). These results suggest that sub-clinical acetabular dysplasia was associated with a younger age at hip arthroplasty in idiopathic OA.

Keywords

Osteoarthritis (OA)Idiopathic Hip dysplasia Arthroplasty Centre-edge angle Wiberg angle Contact stress

References

Buckwalter

Martin

: Osteoarthritis. Adv Drug Deliv Rev 2006; 58: 150–167.

Karlson

Mandl

Aweh

: Total hip replacement due to osteoarthritis: The importance of age, obesity, and other modifiable risk factors. Am J Med 2003; 114: 93–98.

Jensen

: Hip osteoarthritis: Influence of work with heavy lifting, climbing stairs or ladders, or combining kneeling/squatting with heavy lifting. Occup Environ Med 2008; 65: 6–19.

Weinstein

: Natural history of congenital hip dislocation (CDH) and hip dysplasia. Clin Orthop 1987; 225: 62–76.

Recnik

Kralj-Iglič

Iglič

: The role of obesity, biomechanical constitution of the pelvis and contact joint stress in progression of hip osteoarthritis. Osteoarthritis Cartilage 2009; 17: 865–868.

Hadley

Brown

Weinstein

: The effects of contact pressure elevations and aseptic necrosis on the long-term outcome of congenital hip dislocation. J Orthop Res 1990; 8: 504–513.

Mavčič

Pompe

Antolič

: Mathematical estimation of stress distribution in normal and dysplastic human hips. J Orthop Res 2002; 20: 1025–1030.

Vengust

Daniel

Antolič

: Biomechanical evaluation of hip joint after Salter innominate osteotomy: A long-term follow-up study. Arch Orthop Trauma Surg 2001; 121: 511–516.

Lane

Lin

Christiansen

: Association of mild acetabular dysplasia with an increased risk of incident hip osteoarthritis in elderly white women: The study of osteoporotic fractures. Arthritis Rheum 2000; 43: 400–404.

10.

Lievense

Bierma-Zeinstra

SMA

Verhagen

: Influence of hip dysplasia on the development of osteoarthritis of the hip. Ann Rheum Dis 2004; 63: 621–626.

11.

Jacobsen

Sonne-Holm

Søballe

: Hip dysplasia and osteoarthrosis: A survey of 4151 subjects from the Osteoarthrosis Substudy of the Copenhagen City Heart Study. Acta Orthop 2005; 76: 149–158.

12.

Ipavec

Brand

Pedersen

: Mathematical modelling of stress in the hip during gait. J Biomech 1999; 32: 1229–1235.

13.

Recnik

Kralj-Iglič

Iglič

: Higher peak contact hip stress predetermines the side of hip involved in idiopathic osteoarthritis. Clin Biomech (Bristol, Avon) 2007; 22: 1119–1124.

14.

Dreinhöfer

Dieppe

Stürmer

: Indications for total hip replacement: Comparison of assessments of orthopaedic surgeons and referring physicians. Ann Rheum Dis 2006; 65: 1346–1350.