ArticleBone & joint open2025
HIP Surgical Techniques to Enhance Rehabilitation (HIPSTER) : a single-centre, double-blind, parallel three-arm, randomized-controlled, superiority trial.
Article in Bone & joint open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
19 authors.
Funding
Abstract
Aims: The primary aim of this trial is to investigate whether two novel robotic-assisted tendon-sparing posterior approaches to total hip arthroplasty (THA) surgery, the piriformis-sparing posterior approach (PSPA) and the spare piriformis and internus, repair externus technique (SPAIRE), improve early patient outcomes in THA compared with a robotic-assisted standard posterior approach (PA). Methods: HIP Surgical Techniques to Enhance Rehabilitation (HIPSTER) is a single-centre, double-blind, parallel three-arm, individually randomized, controlled, superiority trial. A total of 309 participants aged over 18 years who have been listed for an elective THA will be recruited. Participants will be randomized in a 1:1:1 ratio to SPAIRE:PSPA:PA, using minimization (with a random element) on sex (males; females), age (< 50 years; ≥ 50 years), and BMI (< 30 kg/m Conclusion: The trial will assess whether the two novel robotic-assisted tendon-sparing posterior approaches to THA surgery, the PSPA and SPAIRE, improve patient outcomes in THA compared with a robotic-assisted standard PA. If successful, it is anticipated that the results of this trial will provide the evidence necessary to plan a future multicentre, randomized-controlled trial to compare the best-performing tendon-sparing approach (PSPA or SPAIRE) identified in this efficacy trial with the gold standard PA, to assess whether the efficacy results are generalizable across the NHS. At the time of the submission, the trial is currently completing recruitment, and the follow-up will be completed in 2026.
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Registered trials
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