Treatment of Cartilage Lesions in Flanders Today

Clinical Outcome After Treating Cartilage Defects in the Knee by Surgical or Conservative Means

The hypothesis of this study is to investigate whether surgical intervention is necessary for patients who suffer from cartilage lesions of the knee, or whether this surgical intervention can be avoided or postponed by using conservative treatment options such as physiotherapy, nutrition supplements, intra-articular injections, bracing.

Forty patients suffering from cartilage lesions in their knee joint will be selected preoperatively. All these patients fulfil certain inclusion- and exclusion criteria. They will be asked to respond to 3 different questionnaires. These questionnaires include the visual analogue scale to evaluate pain (VAS), the Knee injury and Osteoarthritis Outcome Score or KOOS and the International Knee Documentation Committee (IKDC) form to evaluate the effect of their cartilage lesion on activities in daily life. Six months later +/- 20 patients will have had surgery and +/- 20 patients will have had conservative treatment, both groups of patients will be asked to respond again to the 3 different questionnaires. The outcome of the results will tell us more of the evolution both between groups and in each group separately.

Study Overview

• Status: Completed
• Conditions: Lesion of Joint Capsule of Knee Region
• Intervention / Treatment: Other: Conservative comparator; Procedure: Surgery

• Study Type: Interventional
• Enrollment (Actual): 40
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Belgium
  • Ghent, Belgium
    • University Hospital, Ghent

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years to 46 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Symptomatic single cartilage lesions of the femur condyles
• Size of the lesion, determined by MRI:

between 1-2 cm² for the group who will receive conservative treatment between 2-5 cm² for the group who will have surgery

- Mechanical joint pain, assessed by a 100 mm Visual Analogue Scale: > 40 mm for the conservative group, > 60 mm for the operative group

• Agree to stop using analgetics and NSAID's 2 weeks before the First respond of the surveys, and 2 weeks before the second respond of the surveys. Only paracetamol (4g/day) is allowed.
• men and women, women have to use contraceptive to avoid pregnancies.
• age between 18 - 50 years

Exclusion Criteria:

• participation in concurrent trials
• participation in previous trials within 3 months
• subjects with HIV, hepatitis, syphilis
• malignancy
• alcohol and drug abuse
• poor general health condition as judged by the investigator
• osteochondritis dissecans
• advanced osteoarthritis (kellgren 2-4)
• known allergy to penicillins and gentamicin or presence of multiple severe allergies
• complex ligamentous instability of the knee
• lateral meniscus lesion or more than 50% resection of medial meniscus
• Varus or valgus misalignment exceeding 3° (kissing lesions out)
• Mosaicplasty (OATS)
• Microfracture performed less than 1 year before baseline
• Received hyaluronic acid intra-articular injections into the afflicted knee within the last six months of baseline
• Taking specific OA drugs, such as chondroitin sulphate, diacerein, capsaicin within two weeks of the baseline visit
• Corticosteroid therapy by systemic or intra-articular route within the last month of baseline or intramuscular or oral corticosteroids within the last two weeks of baseline
• Chronic use of anticoagulants
• Uncontrolled diabetes
• Any concomitant painful or disabling disease of the spine, hips or lower limbs that would interfere with evaluation of the afflicted knee
• Any clinically significant or symptomatic vascular or neurologic disorder of the lower extremities
• Any evidence of the following disease in the target joint: septic arthritis, inflammatory joint disease, hematochrosis, collagen gene mutations
• Current diagnosis of osteomyelitis
• A blood result showing liver enzymes more than two times the upper limit of normal or any other result that in the clinical investigator's mind is important clinically
• CRP level greater than 10g/l
• Unwilling to participate in post-operative rehabilitation protocol

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Health Services Research
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Surgery	Procedure: Surgery; Knee surgery
Active Comparator: Conservative treatment	Other: Conservative comparator; Kinesitherapy, intra-articular injection, wearing a brace, thermotherapy, intake of supplements.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Questionnaires to decide which intervention will be performed.	The questionnaires include the visual analogue scale to evaluate pain (VAS), the Knee injury and Osteoarthritis Outcome Score or KOOS and the International Knee Documentation Committee subjective knee form (IKDC) to evaluate the effect of their cartilage lesion on activities in daily life	At day 1

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Questionnaires to measure patient satisfaction.	The questionnaires include the visual analogue scale to evaluate pain (VAS), the Knee injury and Osteoarthritis Outcome Score or KOOS and the International Knee Documentation Committee subjective knee form (IKDC) to evaluate the effect of their cartilage lesion on activities in daily life.	At 6 months

Collaborators and Investigators

• Sponsor: University Hospital, Ghent

Study record dates

Study Major Dates

• Study Start (Actual): January 1, 2013
• Primary Completion (Actual): December 1, 2015
• Study Completion (Actual): December 1, 2015

Study Registration Dates

• First Submitted: August 17, 2011
• First Submitted That Met QC Criteria: August 19, 2011
• First Posted (Estimate): August 22, 2011

Study Record Updates

• Last Update Posted (Actual): December 15, 2022
• Last Update Submitted That Met QC Criteria: December 13, 2022
• Last Verified: December 1, 2022

More Information

Terms related to this study

• Keywords: Cartilage lesions in the knee joint
• Other Study ID Numbers: 2011/399