NCT05657899: WOW-OK

The With Or Without Olecranon K-wires Trial

Recruiting now NA Last updated 25 June 2025

What this trial tests

NA trial testing Cerclage fixation in Olecranon Fracture in 200 participants. Currently enrolling.

Timeline

1 January 2023

Primary endpoint
1 September 2029

1 September 2029

Quick facts

Lead sponsor	Region Skane
Phase	NA
Status	Recruiting now
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	single
Primary purpose	treatment
Enrollment	200
Start date	1 January 2023
Primary completion	1 September 2029
Estimated completion	1 September 2029
Sites	2 locations across Sweden

Drugs / interventions tested

• Cerclage fixation
• Tension band wiring

Conditions studied

• Olecranon Fracture — all drugs for Olecranon Fracture →

Sponsor

Region Skane — full company profile →

Who can join

18 and older, any sex, with Olecranon Fracture. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Fractures of the elbow tip (olecranon) that leave the elbow joint stable but where the fracture ends are separated (Mayo type 2a and 2b) can be treated with pins and a metal wire (tension band wiring, TBW) or metal wiring alone (cerclage fixation, CF ). Previous studies have reported high re-operation and complication rates following TBW. The current study's hypothesis, based on two retrospective studies, is that CF of these fractures yield lower re-operation rates compared with TBW. The investigators also hypothesize that the overall complication rate will be lower following CF. The aim is to investigate this hypothesis in a randomized controlled trial. Patients that are 18 years or older with Mayo type 2a and 2b olecranon fractures at Skåne University hospital will be invited to the study. Participation is voluntary. Patients who accept participation will be randomly assigned to surgery by either TBW or cerclage fixation. Two hundred participants will be followed by physiotherapists for 36 months post-surgery assessing re-operations, complications, patient reported outcome, and elbow function.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

1. The With Or Without Olecranon K-wire (WOW OK) Trial of tension band wire fixation versus cerclage fixation without K-wires in displaced stable olecranon fractures: study protocol for a randomized controlled trial.
   Cornefjord G, Kostogiannis I, Rogmark C, Jerrhag D, et al · · 2023 · PMID 37641082 · DOI 10.1186/s13063-023-07566-9