NCT02090140

Microfracture Versus Adipose Derived Stem Cells for the Treatment of Articular Cartilage Defects

Randomized Controlled Trial of Microfracture Versus Adipose Derived Stem Cells for the Treatment of Isolated Articular Cartilage Defects

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 17 (estimated)
• Sponsor: University of Colorado, Denver · Academic / Other
• Sex: All
• Age: 18 Years – 50 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to compare two biologic methods for the treatment of articular cartilage defects in the knee. The first method, microfracture, is the standard of care and is routinely used to recruit cells from the subchondral bone marrow to the site of cartilage loss. The second method is the application of adipose-derived stem cells (ADSCs) to the defect site. In theory, ADSCs on a collagen scaffold should enable the delivery of more specific progenitor cells to the site of injury, resulting in better regeneration and integration of articular cartilage at the site of a defect as compared to the microfracture method.

Detailed description

Patients enrolled in the ADSC cohort will undergo the following procedures: arthroscopic resection of approximately 5cc of the infrapatellar fat pad using a motorized shaver (standard use in arthroscopy). Fat will be collected in a sterile Aquavage Collection System (AV1200, MD Resources, Livermore, CA) and kept sealed until processing. Fat will then immediately be processed in the Harvest Adiprep System to separate a population of ADSCs. This system concentrates an average of 5 x 105 cells/ml. All specimens will be processed using routine sterile procedures within the operating room; cells destined for implantation will not leave the operating room. Concurrently, patients will undergo arthroscopy and similar preparation of the chondral defect and removal of the calcified cartilage layer. However, no puncture of the subchondral bone will be performed. A layer of fibrin glue (Tisseel) will be placed at the base of the defect to seal off any bleeding from the subchondral plate followed by the application of the acellular dermal matrix (Allopatch HD, MTF Corporation, Edison, NJ, USA)and ADSCs. An additional layer of Tisseel will then be applied over the cells and matrix. No additional fixation will be applied. The matrix and cells will be recessed below the articular surface by an average of 1mm. They will then complete outcome questionnaires and additional MRI scans at 6, 12, and 24 months post-operatively.

Conditions

• Degenerative Lesion of Articular Cartilage of Knee

Interventions

Type	Name	Description
PROCEDURE	ADSC Application	Patients will undergo arthroscopic resection of approximately 5cc of the infrapatellar fat pad, which will be collected for processing for a population of ADSCs. Patients will undergo arthroscopy and preparation of the chondral defect and removal of the calcified cartilage layer. Tisseel Fibrin glue will be placed at the base of the defect side, followed by the application of the acellular collagen dermal matrix, ADSCs, and an additional layer of fibrin glue.
PROCEDURE	Microfracture	Microfracture surgery is the standard of care for articular cartilage lesions. Patients will undergo arthroscopy with standard technique of microfracture preparation, including the creation of vertical, stable defect edges and removal of the calcified cartilage layer. A microfracture awl will then be used to perform the microfracture technique (6mm below the subchondral plate).

Timeline

• Start date: 2015-11-01
• Primary completion: 2025-12-01
• Completion: 2025-12-01
• First posted: 2014-03-18
• Last updated: 2024-04-25

Locations

3 sites across 1 country: United States