What does this research mean for the field?

Cementing dual mobility components into porous tantalum shells is an effective treatment for severe acetabular bone defects without pelvic discontinuity, yielding high mid-term survivorship and improved clinical and radiographic outcomes. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the clinical and radiographic outcomes of cementing a dual mobility component into a newly implanted porous tantalum acetabular shell during revision total hip arthroplasty for severe bone defects.

September 8, 2026Archives of Orthopaedic and Trauma SurgeryOpen Access

Cemented dual mobility component in newly implanted porous tantalum shells for severe acetabular defects: medium-term outcomes from a high-volume single-surgeon series

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To evaluate the clinical and radiographic outcomes of cementing a dual mobility component into a newly implanted porous tantalum acetabular shell during revision total hip arthroplasty for severe bone defects.
Retrospective review of 36 patients (36 hips; mean age 67.9 years) who underwent revision total hip arthroplasty with this construct between 2014 and 2020 by a single surgeon.
Bone loss was staged using the Paprosky classification (61.1% type III, 38.9% type II), with a median follow-up duration of 67.3 months (range, 17–109 months).
Primary outcome was reintervention-free survival; secondary outcomes included clinical scores (Harris Hip Score) and radiographic parameters (center of rotation and limb length discrepancy).
Cup survival rate reached 89.08% (95% CI, 69.54% to 96.38%) at 60 months, with 4 of 36 hips (11.1%) requiring acetabular revision due to infection (n=2, 5.5%), aseptic loosening (n=1, 2.7%), and dislocation (n=1, 2.7%).
Harris Hip Score significantly increased from 31.8 ± 12.0 preoperatively to 87.0 ± 14.2 at last follow-up (p < 0.001), while the overall dislocation rate was 8.3% (n=3).
Hip center of rotation significantly improved vertically from 19.4 ± 14.9 mm to 3.8 ± 3.4 mm (p < 0.001) and horizontally from 12.4 ± 9.9 mm to 3.8 ± 3.5 mm (p < 0.001), with limb length discrepancy trending toward correction (-7.8 mm to -1.7 mm, p = 0.056).

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Implication

Cohort study demonstrates an 89% 5-year cup survival rate in patients with severe acetabular defects, highlighting effective joint stability.

Cite This Study

Loppini et al. (2026) studied this question.

synapsesocial.com/papers/6a9fd77658e84d0ff5b46213 https://doi.org/10.1007/s00402-026-06498-8

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Implication

Cohort study demonstrates an 89% 5-year cup survival rate in patients with severe acetabular defects, highlighting effective joint stability.

Cemented dual mobility component in newly implanted porous tantalum shells for severe acetabular defects: medium-term outcomes from a high-volume single-surgeon series

Key Points

Discussion

Implication

Cite This Study

Cemented dual mobility component in newly implanted porous tantalum shells for severe acetabular defects: medium-term outcomes from a high-volume single-surgeon series

Key Points

Discussion

Implication

Cite This Study

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