Does stem design influence component positioning in total hip arthroplasty using a minimal invasive posterolateral approach?


PURPOSE:Limited data exist for the reconstructive potential of short bone-preserving stems in THA using a minimal invasive posterolateral approach. Our study aim was to assess the effect of stem design on the reconstruction of hip offset and leg length in MIS posterolateral THA. METHODS:This retrospective consecutive single-surgeon study compares hip offset and leg length, as well as acetabular component positioning (cup anteversion; inclination) of 129 THAs with a cementless standard-length stem (Synergy®) and 143 THAs with a cementless short bone-preserving stem (Trilock®). RESULTS:In reference to the contralateral side, the mean difference in hip offset was 0.9 mm (p = 0.067) for the standard stem and 0.1 mm (p = 0.793) for the short stem, respectively. Leg-length discrepancy was 0.7 mm (Synergy®) and 0.9 mm (Trilock®), respectively. A total of 233 (86 %) acetabular components fell within the target zone for anteversion and inclination. CONCLUSION:Accurate component positioning in MIS posterolateral approach THA is possible and is not influenced by the type of stem.


Int Orthop


Waldstein W,Merle C,Schmidt-Braekling T,Boettner F




Has Abstract


2014-07-01 00:00:00












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    pub_type: 杂志文章,meta分析,评审


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