Arthroscopic Resection of Infrapatellar Fat Pad Impingement Syndrome: Long-Term Clinical Results at Minimum 10-Year Follow-Up
Abstract
1. Introduction
2. Materials and Methods
2.1. Patient Selection and Diagnosis
2.2. Surgical Technique
2.3. Clinical Evaluation
2.4. Radiologic Measurements
2.5. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
AKP | Anterior knee pain |
PFJ | Patellofemoral joint |
IPFP | Infrapatellar fat pad |
MRI | Magnetic resonance imaging |
AL | Anterolateral |
SL | Superolateral |
AM | Anteromedial |
VAS | Visual analog scale |
IKDC | International Knee Documentation Committee |
AP | Anteroposterior |
PPTA | Patella–patellar tendon angle |
IPFV | Infrapatellar fat pad volume |
ISR | Insall–Salvati ratio |
CDI | Caton–Deschamp index |
ICC | Intraclass correlation coefficient |
OA | Osteoarthritis |
PVNS | Pigmented villonodular synovitis |
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Case | Age | Sex | Site | BMI | Follow-Up (Months) | Tegner Activity | Hoffa’s Test | MRI | VAS | PPTA | IFPV | ISR | CDI | PFJ Arthritis (0/1/2/3/4) | Biopsy |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 15 | F | R | 21.62 | 148.4 | 3 | positive | positive | 7 | 133.6 | 528.6 | 0.92 | 0.96 | 0 | Consistent with Hoffa’s disease |
2 | 29 | M | R | 26.18 | 149.0 | 5 | positive | positive | 6 | 125.3 | 783.9 | 1.12 | 1.31 | 0 | Consistent with Hoffa’s disease |
3 | 46 | F | R | 23.34 | 141.8 | 3 | positive | negative | 6 | 133.4 | 491.4 | 0.99 | 0.76 | 1 | Mild synovial hyperplasia |
4 | 21 | M | R | 22.43 | 145.2 | 4 | negative | negative | 7 | 144.8 | 829.0 | 1.22 | 1.14 | 0 | Mild synovial hyperplasia |
5 | 19 | M | L | 21.08 | 147.1 | 4 | positive | positive | 8 | 136.7 | 799.8 | 1.07 | 1.15 | 0 | Mild fibrosis |
6 | 30 | F | L | 20.05 | 135.5 | 3 | positive | negative | 7 | 133.7 | 626.2 | 1.63 | 1.13 | 0 | Synovial hyperplasia and proliferation adipocyte |
7 | 27 | M | R | 23.45 | 154.0 | 4 | negative | positive | 7 | 141.1 | 740.2 | 1.00 | 1.00 | 0 | Mild fibrosis |
8 | 47 | F | L | 21.07 | 147.5 | 3 | positive | negative | 6 | 130.2 | 591.2 | 1.12 | 0.91 | 1 | Mild fibrosis |
9 | 45 | F | L | 19.6 | 132.1 | 3 | positive | negative | 8 | 135.8 | 627.1 | 0.81 | 1.01 | 0 | Increase in mature adipose tissue, consistent with fat pad |
10 | 43 | F | R | 19.86 | 137.8 | 3 | positive | negative | 6 | 142.5 | 530.2 | 0.88 | 0.99 | 0 | Mild synovial hyperplasia |
11 | 19 | M | L | 22.05 | 145.7 | 4 | positive | positive | 7 | 136.3 | 777.1 | 0.87 | 0.81 | 1 | Mild fibrosis |
12 | 33 | F | R | 28.23 | 145.3 | 2 | positive | negative | 8 | 143.0 | 585.9 | 1.03 | 1.14 | 0 | Mild fibrosis |
13 | 22 | M | R | 24.81 | 148.5 | 3 | positive | negative | 8 | 138.4 | 886.0 | 1.12 | 1.09 | 0 | Consistent with Hoffa’s disease |
14 | 48 | M | L | 29.21 | 122.5 | 4 | positive | positive | 8 | 137.0 | 586.3 | 0.92 | 0.81 | 1 | Mild synovial hyperplasia |
15 | 28 | F | L | 21.04 | 141.1 | 2 | positive | negative | 7 | 134.2 | 657.3 | 0.81 | 1.00 | 0 | Mild synovial hyperplasia with fatty change |
16 | 20 | F | L | 19.77 | 122.4 | 2 | positive | positive | 8 | 130.0 | 511.8 | 1.13 | 1.00 | 0 | Mild synovial hyperplasia |
17 | 30 | F | L | 21.51 | 149.8 | 2 | positive | negative | 7 | 139.7 | 637.4 | 0.96 | 1.12 | 0 | Mild synovial hyperplasia with fatty change |
18 | 23 | M | L | 23.63 | 149.5 | 4 | negative | negative | 8 | 136.3 | 769.4 | 1.12 | 1.18 | 0 | Synovial hyperplasia and increased capillaries |
Variables | Preoperative | Postoperative (2 Years) | Postoperative (Final Follow-Up) | p-Value a | p-Value b |
---|---|---|---|---|---|
VAS | 7.25 ± 0.79 | 2.43 ± 1.50 | 3.66 ± 1.50 | <0.001 | <0.001 |
Kujala | 52.35 ± 5.23 | 88.61 ± 5.53 | 82.36 ± 6.53 | <0.001 | <0.001 |
IKDC 2000 | 48.50 ± 8.38 | 82.39 ± 6.25 | 77.49 ± 5.19 | <0.001 | <0.001 |
Tegner activity | 3.0 ± 1.0 | 6.01 ± 0.87 | 5.83 ± 0.76 | <0.001 | <0.001 |
Lysholm | 49.13 ± 7.12 | 83.17 ± 6.54 | 76.83 ± 5.72 | <0.001 | <0.001 |
Variables | Preoperative | Postoperative (2 Years) | p-Value |
---|---|---|---|
ISR | 1.04 ± 0.18 | 1.04 ± 0.19 | n.s |
CDI | 1.05 ± 0.14 | 1.07 ± 0.17 | n.s |
PF arthritis(0/1/2/3/4) | 14/4/0/0/0/ | 14/2/2/0/0/ | n.s |
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Park, Y.-C.; Kim, Y.-M.; Joo, Y.-B. Arthroscopic Resection of Infrapatellar Fat Pad Impingement Syndrome: Long-Term Clinical Results at Minimum 10-Year Follow-Up. Medicina 2025, 61, 997. https://doi.org/10.3390/medicina61060997
Park Y-C, Kim Y-M, Joo Y-B. Arthroscopic Resection of Infrapatellar Fat Pad Impingement Syndrome: Long-Term Clinical Results at Minimum 10-Year Follow-Up. Medicina. 2025; 61(6):997. https://doi.org/10.3390/medicina61060997
Chicago/Turabian StylePark, Young-Cheol, Young-Mo Kim, and Yong-Bum Joo. 2025. "Arthroscopic Resection of Infrapatellar Fat Pad Impingement Syndrome: Long-Term Clinical Results at Minimum 10-Year Follow-Up" Medicina 61, no. 6: 997. https://doi.org/10.3390/medicina61060997
APA StylePark, Y.-C., Kim, Y.-M., & Joo, Y.-B. (2025). Arthroscopic Resection of Infrapatellar Fat Pad Impingement Syndrome: Long-Term Clinical Results at Minimum 10-Year Follow-Up. Medicina, 61(6), 997. https://doi.org/10.3390/medicina61060997