Table 1.
Characteristics of the study population
| Total study population | Surface marker/MACSPlex | ICS | |
|---|---|---|---|
| Number of patients, n | 40 | 31 | 9 |
| Gender, n (%) | |||
| Male | 11 (27.5%) | 10 (32.2%) | 1 (11.1%) |
| Female | 29 (72.5%) | 21 (67.8%) | 8 (88.9%) |
| Age at surgery, years | 41.7 ± 14.3 | 41.3 ± 14.1 | 43 ± 14.9 |
| Mean ± SD (IQR) | (28.4–51.2) | (28–52.5) | (30–47) |
| Operation side, n (%) | |||
| Right | 17 (42.5%) | 14 (45.2%) | 3 (33.3%) |
| Left | 23 (57.5%) | 17 (54.8%) | 6 (66.6%) |
| BMI, kg/m2 | 27.9 ± 6.4 | 28.5 ± 7.2 | 25.7 ± 4.4 |
| Mean ± SD (IQR) | (23.2–30.3) | (23.9–31.4) | (22.6–29.4) |
| Leucocytes/nl | 7.01 ± 1.9 | 7.3 ± 1.9 | 6.38 ± 1.8 |
| Mean ± SD (IQR) | (5.9–7.9) | (5.9–7.94) | (5.8–7.9) |
| C-reactive protein, mg/dl | 3.3 ± 1.9 | 3.2 ± 2.2 | 3.4 ± 1.1 |
| Mean ± SD (IQR) | (2–4) | (2.0–3.85) | (2–4) |
| Time from onset of symptoms/trauma to operation in months, n (%) | |||
| 1–3 | 2 (5%) | 2 (6.4%) | 0 |
| 4–6 | 16 (40%) | 13 (42%) | 3 (33.3%) |
| 7–9 | 5 (12.5%) | 4 (12.9%) | 1 (11.1%) |
| 10–12 | 7 (17.5%) | 4 (12.9%) | 3 (33.3%) |
| > 12 | 10 (25%) | 8 (25.8%) | 2 (22.2%) |
| ICRS grade | |||
| I–IV in ≥ 2 compartments | 2 (5%) | 2 (6.5%) | 0 |
| II–IV in 1 compartment | 38 (95%) | 29 (93.5%) | 9 (100%) |
| Pathology, n (%) | |||
| Meniscus tear | 16 (40%) | 14/31 (45.1%) | 2/9 (22.2%) |
| ACL tear | 2 (5%) | 2/31 (6.5%) | 0/9 |
| Localized cartilage damage | 22 (55%) | 15/31 (48.4%) | 7/9 (77.7%) |
Demographic and clinical parameters of the study population are shown. Values are shown as mean ± standard deviation (range) or as number (p%). ICRS grade was evaluated by independent surgeons intraoperatively
IQR interquartile range, BMI body mass index, K & L score Kellgren and Lawrence score (radiological score), ICRS grade International Cartilage Repair Society grade (arthroscopical grading), ACL anterior cruciate ligament