Hip offset and leg-length restoration in revision hip arthroplasty with a monoblock, hydroxyapatite-coated stem
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Authors
Saunders, Paul
Shaw, Debbie
Sidharthan, Sijin
Young, Stephen K
Board, Tim
Issue Date
2023-09
Keyword
Type
Article
Citation
Hip Int . 2023 Sep;33(5):880-888.
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Abstract
Aims: Restoration of normal hip biomechanics in arthroplasty surgery is important in order to achieve good muscle function and joint stability.
Methods: In this retrospective cohort study, we examined the postoperative radiographs of 131 femoral revision arthroplasty procedures using a monoblock, fully hydroxyapatite (HA)-coated titanium stem. Femoral offset, modified-global offset and leg length were measured of the operated and contralateral hips.
Results: Femoral offset was restored to ±10 mm in 108 cases (82%), modified-global offset was restored ±10 mm in 93 cases (71%) and leg length was restored to ±10 mm in 102 cases (81%). There were 4 dislocations with a mean follow-up period of 38 months.
Conclusions: Restoration of hip biomechanics is achievable with a monoblock stem and thus is a viable option in revision hip arthroplasty.