Acetabular Dysplasia and Surgical Approaches Other Than Direct Anterior Increases Risk for Malpositioning of the Acetabular Component in Total Hip Arthroplasty

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• 作者：Kirill Gromov ; MD ; PhD^a ; ^b ; ; Meridith E. Greene ; PhD^a ; James I. Huddleston ; MD^c ; Roger Emerson ; MD^d ; Peter Gebuhr ; MD^b ; Henrik Malchau ; MD ; PhD^a ; Anders Troelsen ; MD ; PhD^b
• 关键词：total hip arthroplasty ; component positioning ; dysplasia ; anteversion ; Martell analysis
• 刊名：The Journal of Arthroplasty
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：31
• 期：4
• 页码：835-841
• 全文大小：923 K

文摘

Persistent acetabular dysplasia (AD) after periacetabular osteotomy has been hypothesized to increase the risk for malpositioning of the acetabular component. In this study, we investigate whether AD is an independent risk factor for cup malpositioning during primary total hip arthroplasty (THA).

id="absSec_2">Methods

id="abspara0015">Patient demographics, surgical approach, presence of AD assessed using the lateral center-edge angle, and acetabular cup positioning determined using Martell Hip Analysis Suite were investigated in 836 primary THA patients enrolled in a prospective multicenter study.

id="absSec_3">Results

id="abspara0020">We found that presence of AD, defined as the lateral center-edge angle of <25°, is an independent risk factor for malpositioning of the acetabular component during primary THA. Surgical approach other than direct anterior was also independently associated with malpositioned cups.

id="absSec_4">Conclusions

id="abspara0025s">Surgeons should therefore take special care during placement of the acetabular component in patients with AD.