Autologous minced cartilage implantation combined with arthroscopic platelet-rich fibrin membrane in large chondral defects of the knee: a prospective comparative study
Bibliographic record
Abstract
Introduction Autologous minced cartilage implantation combined with platelet-rich fibrin membrane (m-PRF) may enhance chondrocyte viability by facilitating cell signaling between chondrocytes. Objectives The study evaluated the clinical outcomes of nanofracture with m-PRF–combined minced cartilage implantation vs nanofracture alone for large chondral lesions of the knee Methods A total of 79 physically active adult patients (mean age 46 ± 5.3 years) with International Cartilage Repair Society grade III to IV cartilage lesions >2 cm² of the femoral condyle or trochlea were included in this study. Patients who met the inclusion criteria were randomized into 2 surgical treatment groups. Group 1 underwent arthroscopic nanofracture followed by implantation of minced cartilage utilizing a membrane made from platelet rich in fibrin (m-PRF). Group 2 underwent arthroscopic debridement and nanofracture alone. All patients were evaluated prospectively with a minimum 2-year follow-up period, including 36 patients in Group 1 and 43 in Group 2 and assessed with International Knee Documentation Committee (IKDC) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) knee scores. Results IKDC and WOMAC scores showed significant improvements in both groups at final follow-up. IKDC scores in Group 1 at final follow-up were significantly higher (87.1 ± 3.8) than Group 2 (84.4 ± 6.3) ( P = .03). WOMAC scores improved from 52 ± 8.6 to 19.1 ± 5.1 in Group 1 and from 55 ± 6.2 to 24.2 ± 7.1 in Group 2. The complication rate was low for both groups. Conclusions Arthroscopic m-PRF-combined minced cartilage implantation is an effective method for addressing chondral defects in the knee joint with low complication rates. m-PRF may function as a biological scaffold without the need for fixation.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".