NCT03112200

Subchondroplasty® Knee RCT

A Randomized Controlled Trial of the Subchondroplasty® Procedure With Arthroscopy Versus Arthroscopy Alone for Treatment of Bone Marrow Lesions in the Knee

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 134 (actual)
• Sponsor: Zimmer Biomet · Industry
• Sex: All
• Age: 30 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

This is a multi-center, prospective, single-blinded, two-arm study, randomized to include approximately 134 subjects treated with Subchondroplasty (SCP) + Arthroscopy and 67 subjects with arthroscopy alone. The primary objective of this study is to demonstrate superiority of Subchondroplasty with arthroscopy compared to arthroscopy alone for treatment of Bone Marrow Lesions (BMLs) in the knee.

Detailed description

This is a multicenter, prospective, single-blinded, two-arm, randomized study. Enrolled subjects will have a single Bone Marrow Lesion of the tibia, single BML of the femur, or adjoining Bone Marrow Lesions of tibia and femur. Subjects will also be surgical candidates for knee arthroscopy due to mechanical symptoms, meniscus tear, loose body and/or synovitis. A stratified blocked randomization will be used to assign subjects to either Subchondroplasty with arthroscopy or to arthroscopy alone in a 2:1 ratio. Individual sets of blocks will be determined within study site and lesion polarity status (unipolar vs. bipolar). Subjects will be enrolled within 60 days prior to surgery and take part in follow-up visits for two years following surgery. A preoperative visit will occur at the time of enrollment. Follow-up visits were to initially occur at the study site at 6 weeks, 3 months, 6 months, 12 months, and 24 months post-surgery. Telephone follow-up interviews to be be performed at 9 and 18 months post-surgery. Target enrollment was 201 subjects, to include 134 subjects in the treatment group (Subchondroplasty + Arthroscopy) and 67 subjects in the control group (Arthroscopy alone). As of October 2020, follow-up has been amended to be completed remotely, where all visits can be performed electronically and/or via telephone. Subjects will complete the study at the 24 month follow-up visit. For the purposes of this protocol, a revision will be defined as any partial or total joint arthroplasty or any bone fixation, bone grafting or bone substitute procedure in the same compartment in the study knee.

Conditions

• Bone Marrow Edema
• Knee Pain Chronic
• Knee Osteoarthritis
• Osteoarthritis, Knee
• Osteoarthritis

Interventions

Type	Name	Description
PROCEDURE	Subchondroplasty with Arthroscopy	The Subchondroplasty® (SCP®) Procedure targets and fills bone defects with AccuFill® Bone Substitute Material utilizing an arthroscopic / percutaneous approach. Using intraoperative fluoroscopy, the bone defect is localized relative to MRI findings The appropriate AccuPort® Delivery Cannula is drilled to the bone defect. AccuFill® Bone Substitute Material is then injected into the subchondral bone defect. The calcium phosphate (CaP) fills the edematous void and hardens within the Bone Marrow Lesion. The CaP is resorbed over time and replaced with new bone during the healing process.
PROCEDURE	Arthroscopy Alone	An endoscopic examination, therapy and surgery of the knee joint.

Timeline

• Start date: 2017-03-29
• Primary completion: 2023-08-23
• Completion: 2023-08-23
• First posted: 2017-04-13
• Last updated: 2023-09-21

Locations

13 sites across 2 countries: United States, Canada