70
Participants
Start Date
January 1, 2024
Primary Completion Date
January 1, 2025
Study Completion Date
December 31, 2026
Arthroscopic microfracture with intraoperative local PRP gel injection
"Arthroscopic microfracture:~An anteromedial portal and an anterolateral portal are routinely established. A diagnostic arthroscopy is performed. Defects of superficial cartilage, cystic components, and necrotic bone are debrided arthroscopically with curette and shaver to a stable circumferential rim. Microfracture awls are introduced and subchondral channels to 4-6 mm in depth are created, spacing the channels 3 to 5 mm apart across the entire surface of the lesion.~PRP preparation and local injection:~PRP is harvested using a PRP preparation kit via centrifugation. Fifty milliliters of autologous venous blood are drawn from the patient and processed. Platelet count is measured for quality control. On average 4 ml of (range 3-6) PRP is obtained and mixed with thrombin calcium agent in preparation for PRP gel. PRP gel is administered to the injured area using a blunt and long-tip injector, with direct visualization under arthroscope."
Isolated microfracture
"Arthroscopic microfracture:~An anteromedial portal and an anterolateral portal are routinely established. A diagnostic arthroscopy is performed. Defects of superficial cartilage, cystic components, and necrotic bone are debrided arthroscopically with curette and shaver to a stable circumferential rim. Microfracture awls are introduced and subchondral channels to 4-6 mm in depth are created, spacing the channels 3 to 5 mm apart across the entire surface of the lesion."
RECRUITING
Peking University Third Hospital, Beijing
Peking University Third Hospital
OTHER