deltatrials
Active Not Recruiting OBSERVATIONAL NCT00454467

Hospital for Special Surgery Knee Arthroplasty Cohort

Prospective Evaluation of the Clinical and Economic Outcomes of Total Joint Replacement: The HSS Knee Arthroplasty Cohort

Sponsor: Agency for Healthcare Research and Quality (AHRQ)

Conditions Knee Arthroplasty
Interventions Baseline Questionnaire Cost Data Follow-up questionnaires In-hospital post-operative data will be collected Intra-operative data will be collected post-operatively Operative Data Satisfaction data will be extracted from Press/Ganey and on follow-up questionnaires
Updated 14 times since 2017 Last updated: Feb 11, 2026 Started: Apr 30, 2007 Primary completion: Apr 30, 2027 Completion: Apr 30, 2027
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This observational or N/A phase trial investigates Knee Arthroplasty and is currently ongoing. Agency for Healthcare Research and Quality (AHRQ) leads this study, which shows 14 recorded versions since 2007 — indicating substantial longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Status Flow

~Jan 2017 – ~Apr 2018 · 15 months · monthly snapshot~Apr 2018 – ~Jun 2018 · 2 months · monthly snapshot~Jun 2018 – ~Sep 2019 · 15 months · monthly snapshot~Sep 2019 – ~Oct 2020 · 13 months · monthly snapshot~Oct 2020 – ~Jan 2021 · 3 months · monthly snapshot~Jan 2021 – ~Nov 2021 · 10 months · monthly snapshot~Nov 2021 – ~Nov 2022 · 12 months · monthly snapshot~Nov 2022 – ~Nov 2023 · 12 months · monthly snapshot~Nov 2023 – ~Jul 2024 · 8 months · monthly snapshot~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshot~Sep 2024 – ~Feb 2025 · 5 months · monthly snapshot~Feb 2025 – ~Jun 2025 · 4 months · monthly snapshot~Jun 2025 – ~Feb 2026 · 8 months · monthly snapshot~Feb 2026 – present · 6 months · monthly snapshot

Change History

14 versions recorded

  1. Feb 2026 — Present [monthly]

    Active Not Recruiting

  2. Jun 2025 — Feb 2026 [monthly]

    Active Not Recruiting

  3. Feb 2025 — Jun 2025 [monthly]

    Active Not Recruiting

  4. Sep 2024 — Feb 2025 [monthly]

    Active Not Recruiting

  5. Jul 2024 — Sep 2024 [monthly]

    Active Not Recruiting

▶ Show 9 earlier versions

  1. Nov 2023 — Jul 2024 [monthly]

    Active Not Recruiting

  2. Nov 2022 — Nov 2023 [monthly]

    Active Not Recruiting

  3. Nov 2021 — Nov 2022 [monthly]

    Active Not Recruiting

  4. Jan 2021 — Nov 2021 [monthly]

    Active Not Recruiting

  5. Oct 2020 — Jan 2021 [monthly]

    Active Not Recruiting

  6. Sep 2019 — Oct 2020 [monthly]

    Active Not Recruiting

  7. Jun 2018 — Sep 2019 [monthly]

    Active Not Recruiting

  8. Apr 2018 — Jun 2018 [monthly]

    Active Not Recruiting

    Phase: NA → None

  9. Jan 2017 — Apr 2018 [monthly]

    Active Not Recruiting NA

    First recorded

Apr 2007

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • Agency for Healthcare Research and Quality (AHRQ)
  • Hospital for Special Surgery, New York
Data source: Hospital for Special Surgery, New York

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations