Table 2.
Overview of Included Studies
| Author | Journal (Year) | LOE | Number of Patients | Age, Mean ± SD (Range), y | Sex, M/F, n | Knee, Right/Left, n | Meniscus Laterality (Medial/Lateral) | Meniscus Tear Grading | Meniscus Tear Characterization | Treatment Indications | Mean Follow-Up |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Alessio-Mazzola et al.9 | Sports Health (2022) | 4 | 69 | 52.1 ± 7.8 (36-62) | 21/48 | 36/33 | 69 medial | Grade 3 (Crues et al.22) | Degenerative; horizonal tears (63), complex tears (6) | Insidious onset; mechanical symptoms; positive McMurray, Apley, or Thessaly test; joint line tenderness; MRI evidence of degenerative meniscus tear; no bony edema; KL grade >1 excluded | Minimum 12 mo |
| Blanke et al.16 | Muscle, Ligaments, and Tendons Journal (2015) | 4 | 10 | 53.3 ± 13.9 | 6/4 | NR | NR | Grade 2b (Reicher et al.20) | Intrasubstance | Persistent joint pain >6 mo, grade 2 meniscus lesion on MRI, failed 6 mo of conservative treatment, KL grade >2 excluded | 6 mo |
| Guenoun et al.10 | Diagnostic and Interventional Imaging (2020) | 4 | 10 | 40.4 ± 13.6 (18-59) | 7/3 | 7/3 | NR | Grade 1 (2), grade 2 (4), grade 3 (4) (Stoller et al.21) | Degenerative | Degenerative meniscus tear without knee osteoarthritis | 6 mo |
| Kaminski et al.19 | International Journal of Molecular Sciences (2019) | 1 | 72. Control group (n = 3), PRP group (n = 42) | Control group: 46 (27-68), PRP group: 44 (18-67) | Control group: 19/11, PRP group: 22/20 | NR | Control group: 30 medial, PRP group: 41 medial/1 lateral | NR | Chronic horizontal meniscal tear | Chronic horizontal tear assessed via MRI, tear in the vascular/avascular zone of meniscus, single tear of medial or lateral meniscus, KL grade >2 excluded | 92 (54-157) wk |
| Medina-Porqueres et al.17 | International Journal of Environmental Research and Public Health (2022) | 4 | 38 | 50.68 ± 9.65 (29-72) | 8/30 | 25/12 | 32 medial/6 lateral | Grade 1 (1), grade 2 (6), grade 3 (31) (Reicher et al.20) | NR | Failed conservative treatment for 6 wk | 75.92 ± 31.7 (39-190) d |
| Ozyalvac et al.18 | Journal of Orthopaedic Surgery (2019) | 4 | 15 | 33.2 ± 8.2 (19-45) | 6/9 | 5/10 | 15 medial | Grade 2 (Reicher et al.20) | Intrasubstance /degenerative, Ahlback grade 2 or higher excluded | Prescence of intrasubstance meniscus degeneration | 31.9 ± 5.6 (19-39) mo |
KL, XXX; L, left; LOE, level of evidence; MRI, magnetic resonance imaging; NR, not recorded; PRP, platelet-rich plasma; R, right.