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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT04891549
Other study ID # LERG2
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date September 1, 2021
Est. completion date September 1, 2026

Study information

Verified date December 2021
Source Aalborg University Hospital
Contact Rasmus Elsoe, MD, PhD
Phone +4597660000
Email rae@rn.dk
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This study is a multicenter pragmatic, prospective, assessor-blinded, randomized independent clinical trial in which we compare locking plate fixation to standard tension band fixation in patients with patella fractures.


Description:

This study is a multicenter pragmatic, prospective, assessor-blinded, randomized independent clinical trial in which we compare locking plate fixation to standard tension band fixation in patients with patella fractures. Primary objective The overall objective of the study is to compare the 1-year patient-reported Knee Injury and Osteoarthritis Outcome Score (KOOS5) after standard tension band fixation with locking plat fixation for patients with patella fractures. Secondary objectives Several other analyses are of interest and are planned but are not objectives of this study. Therefore, these analyses will, for the major part, hypothesis-generating. Analyses of this type include, but are not limited to harms, muscle atrophy, pain, general health, gait function, time to return to work and economical consequences between the two groups.


Recruitment information / eligibility

Status Recruiting
Enrollment 122
Est. completion date September 1, 2026
Est. primary completion date September 1, 2023
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Above 18 years of age - Patella fracture suitable for surgically treatment, with both surgical methods - AO classification 34-B, 34-C Exclusion Criteria: - Open patella fracture above Gustillo grade 2 - Bilateral patella fracture - Total knee replacement in the affected extremity - Other fractures of the affected extremity within the previous 12 months. - Other reasons for exclusion (unable to understand Danish, mentally unable to participate, etc). - Prior ipsilateral patella fracture

Study Design


Intervention

Procedure:
Tension band fixation
Fracture fixation of the patella fracture with tension band.
Plate fixation
Fracture fixation of the patella fracture with a plate.

Locations

Country Name City State
Denmark Aalborg University Hospital Aalborg
Denmark Aarhus University Hospital Aarhus
Denmark Regional Hospital Hjoerring Hjørring
Denmark Regional Hospital Kolding Kolding
Denmark Regional Hospital Randers Randers
Denmark Regional Hospital Viborg Viborg

Sponsors (6)

Lead Sponsor Collaborator
Rasmus Elsøe Aarhus University Hospital, Randers Regional Hospital, Regional Hospital Hjoerring, Regional Hospital Kolding, Regional Hospital Viborg

Country where clinical trial is conducted

Denmark, 

Outcome

Type Measure Description Time frame Safety issue
Other Harms Adverse events, defined as any negative or unwanted reactions to the two groups will be recorded. Based on previous reports we will focus on: infection, DVT and re-operation. Patients are continuously requested to report any suspicion of a potential AE. Furthermore, adverse events (AE) will be recorded at 3-, 6- and 12-months follow-up by asking patients about potential AEs using open-probe questioning to ensure that all AEs are recorded. Furthermore, medical records will be checked at the primary endpoint (12 months) for all AEs occurring from inclusion until the 12 months follow-up. An AE is defined as any undesirable experience during follow-up leading to contact with the healthcare system (general practitioner or hospital). If an AE result in hospitalization, prolonged inpatient hospital care, result in re-surgery, or if an AE is life-threatening, result in death, permanent disability or damage, they will be categorized as serious adverse events (SAEs). 3-, 6- and 12-months
Primary Knee Injury and Osteoarthritis Outcome Score - (KOOS5) The Knee Injury and Osteoarthritis Outcome Score (KOOS) 29 is a standardised patient-reported questionnaire developed to evaluate knee problems. The questionnaire includes five subscales: pain, ADL, symptoms, sport and QOL and an overall score KOOS5 can be calculated. A total score of 100 indicates no symptoms, and 0 indicates major symptoms. One year following treatment
Secondary Knee Injury and Osteoarthritis Outcome Score - (KOOS5) The Knee Injury and Osteoarthritis Outcome Score (KOOS) 29 is a standardised patient-reported questionnaire developed to evaluate knee problems. The questionnaire includes five subscales: pain, ADL, symptoms, sport and QOL and an overall score KOOS5 can be calculated. A total score of 100 indicates no symptoms, and 0 indicates major symptoms. 3- and 6 months
Secondary Knee Injury and Osteoarthritis Outcome Score - subscales: pain, ADL, symptoms, sport and QOL. The Knee Injury and Osteoarthritis Outcome Score (KOOS) 29 is a standardised patient-reported questionnaire developed to evaluate knee problems. The questionnaire includes five subscales: pain, ADL, symptoms, sport and QOL and an overall score KOOS5 can be calculated. A total score of 100 indicates no symptoms, and 0 indicates major symptoms. 3-, 6- and 12-months
Secondary EQ-5D-5L questionnaire (5-level version) General health will be assessed using EQ-5D-5L questionnaire (5-level version), both the descriptive index and the EQ-VAS. It consists of five dimensions: Mobility, self-care, usual activities, pain/discomfort and anxiety/depression, and a self-rated health scale on a 20 cm vertical, visual analogue scale with endpoints labelled 'the best health you can imagine' and 'the worst health you can imagine'. An Eq5d-5L index of 1.0 indicated full health, 0 death, and -0.59 denoted a condition worse than death. 3-, 6- and 12-months
Secondary Pain intensity measured on a 10 cm VAS scale Development in pain will be recorded by patient-reported pain intensity measured on a 10 cm visual analogue scale (VAS) with endpoints "no pain" and "maximal pain" for the worst pain during the last 24 hours and resting pain. 3-, 6- and 12-months
Secondary "PainDETECT" questionnaire Knee pain and neuropathic pain will be assessed using the "PainDETECT" questionnaire. The "PainDETECT" screening questionnaire uses a scoring method between 1-38. A total score of 1 indicates no symptoms, and 38 indicates major symptoms. 3-, 6- and 12-months
Secondary Bone union Bone union, will be evaluated on standard AP and side X-rays of the fractured patella. The evaluation of bone union will be defined as: i) visible callus formation, diminished no visible fracture line and no pain from the fracture site at weight-bearing and at clinical examination. 3-, 6- and 12-months
Secondary Maximum isometric knee-extension strength Maximum isometric knee-extension strength at 60 degrees knee flexion measured as Nm/kg body mass. Will be measured bilaterally by a strap-mounted dynamometer attached to the wall (Mecmesin AFG2500, Mecmesin Ltd, West Sussex, UK) 12-months
Secondary Maximum isometric knee-flexion strength Maximum isometric knee-flexion strength at 90 degrees knee flexion measured as Nm/kg body mass. Will be measured bilaterally by a strap-mounted dynamometer attached to the wall (Mecmesin AFG2500, Mecmesin Ltd, West Sussex, UK) 12-months
Secondary Knee range of motion Knee range of motion. With the patient supine on an examination table the full range of passive motion in both knee joints will be measured using a standard goniometer. 3-, 6- and 12-months
Secondary Time to return to work Measure the time from surgery to end of sick leave measured in days 3-, 6- and 12-months
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