Who is sponsoring NCT03311997?

NCT03311997 is sponsored by Uppsala University.

What drugs are being tested in NCT03311997?

Interventions in NCT03311997: Surgical reattachment of hamstring tendons.

What condition does NCT03311997 study?

NCT03311997 studies Hamstring Tendon Injury.

Is NCT03311997 still recruiting?

NCT03311997 is currently completed. Last updated 11 April 2024.

Last reviewed 2024-04-11 · How we verify

NCT03311997: PHACT

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

The Proximal Hamstring Avulsion Clinical Trial - Operative or Nonoperative Treatment

Completed NA Last updated 11 April 2024

What this trial tests

NA trial testing Surgical reattachment of hamstring tendons in Hamstring Tendon Injury in 216 participants. Completed in 22 September 2022.

Timeline

24 October 2017

Primary endpoint
22 September 2022

22 September 2022

Quick facts

Lead sponsor	Uppsala University
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	single
Primary purpose	treatment
Enrollment	216
Start date	24 October 2017
Primary completion	22 September 2022
Estimated completion	22 September 2022
Sites	10 locations across Sweden, Norway

Drugs / interventions tested

Surgical reattachment of hamstring tendons

Conditions studied

Hamstring Tendon Injury — all drugs for Hamstring Tendon Injury →

Sponsor

Uppsala University

Who can join

Adults 30 to 70, any sex, with Hamstring Tendon Injury. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The purpose of this study is to provide reliable evidence on how to best treat proximal hamstrings avulsions, and our primary aim is to compare the reported outcome of patients treated non-operatively with patients treated with suture anchor reattachment of the tendons using the Perth Hamstrings Assessment Tool (PHAT) at 24 months.

Publications & conference data

4 peer-reviewed publications reference this trial (live from Europe PMC):

The proximal hamstring avulsion clinical trial (PHACT)-a randomised controlled non-inferiority trial of operative versus non-operative treatment of proximal hamstrings avulsions: study protocol.
Pihl E, Kristoffersen MH, Rosenlund AM, Laszlo S, et al · · 2019 · cited 11× · PMID 31519683 · DOI 10.1136/bmjopen-2019-031607
Operative versus Nonoperative Treatment of Proximal Hamstring Avulsions.
Pihl E, Laszlo S, Rosenlund AM, Kristoffersen MH, et al · · 2024 · cited 7× · PMID 39023393 · DOI 10.1056/evidoa2400056
Initial Tendon Retraction is Associated with Muscle Degeneration After Nonoperatively Treated Proximal Hamstring Avulsions.
Laszlo S, Rosenlund AM, Pihl E, Kristoffersen MH, et al · · 2026 · PMID 42089934 · DOI 10.1186/s40798-026-01024-x
Initial Tendon Retraction is Associated With Muscle Degeneration After Nonoperatively Treated Proximal Hamstring Avulsions
Laszlo S, Rosenlund A, Pihl E, Kristoffersen MH, et al · · 2025 · DOI 10.21203/rs.3.rs-6386233/v1

Verify or expand the search:

Other Uppsala University trials

Trials by the same sponsor.

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NCT07461636 — Robotic-Assisted Pedicle Screw Placement in Spine Surgery · recruiting
NCT07273409 — Pancreatic Neuroendocrine Tumour - Optimal Surgical Debulking or Not · NA · recruiting
NCT07352683 — Open TAP-block in Pediatric Abdominal Surgery · NA · recruiting

Verify against primary sources

ClinicalTrials.gov — authoritative US registry record
WHO ICTRP — international registry index
EU Clinical Trials Register
Sponsor press releases (Google)

Data sources for this page

Trial protocol + status: ClinicalTrials.gov NCT03311997 (US National Library of Medicine, public domain)
Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Uppsala University
Last refreshed: 11 April 2024

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT03311997.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing