Table 3.
Knee function assessments based on ICRS questionnaires at baseline and follow-up. Patients were grouped based on the types of procedures performed. Values indicate the numbers of patients in each subgroup who agreed with the corresponding item
| Subgroup 1 | Subgroup 2 | Subgroup 3 | Subgroup 4 | All patients | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cartilage repair: a | No | No | Yes | Yes | ||||||
| Ligament/meniscus surgery: | No | Yes | No | Yes | ||||||
| (n = 19/25) | (n = 35/39) | (n = 18/21) | (n = 12/13) | (n = 84/98) b | ||||||
| BL b | FU b | BL | FU | BL | FU | BL | FU | BL | FU | |
| Functional level | ||||||||||
| I can do everything I want do with my knee | 1 | 6 | 0 | 6 | 0 | 4 | 0 | 1 | 1 | 17 |
| I can do nearly everything I want to do with my knee | 4 | 6 | 5 | 19 | 2 | 8 | 1 | 4 | 12 | 37 |
| I am restricted and a lot of things that I want to do with my knee are not possible | 8 | 5 | 20 | 10 | 10 | 6 | 7 | 4 | 45 | 25 |
| I am very restricted and I can do almost nothing with my knee without severe pain and disability | 9 | 2 | 11 | 0 | 7 | 0 | 4 | 3 | 31 | 5 |
| Total | 22 | 19 | 36 | 35 | 19 | 18 | 12 | 12 | 89 | 84 |
| P-value (Wilcoxon test) | 0.05 | < 0.001 | 0.002 | 0.096 | < 0.001 | |||||
| Activity level | ||||||||||
| Are you a highly competitive sportsman/sportswoman? | 3 | 1 | 9 | 4 | 6 | 1 | 6 | 2 | 24 | 8 |
| Are you well trained and frequently participate in sport? | 10 | 5 | 14 | 9 | 5 | 6 | 1 | 2 | 30 | 22 |
| Participate in sport sometimes | 8 | 10 | 10 | 17 | 5 | 9 | 4 | 5 | 27 | 41 |
| Never participate in sport | 2 | 3 | 3 | 4 | 4 | 2 | 2 | 3 | 11 | 12 |
| Total | 23 | 19 | 36 | 34 | 20 | 18 | 13 | 12 | 92 | 83 |
| P-value (Wilcoxon test) | 0.05 | 0.03 | 0.2 | 0.2 | 0.001 | |||||
| Patient's rating of knee function in comparison with the contralateral knee | ||||||||||
| 90–100% | 1 | 8 | 1 | 18 | 1 | 7 | 0 | 4 | 3 | 37 |
| 70–90% | 5 | 4 | 10 | 15 | 3 | 7 | 0 | 3 | 18 | 29 |
| 40–70% | 8 | 4 | 19 | 2 | 10 | 1 | 9 | 2 | 46 | 9 |
| 0–40% | 9 | 2 | 5 | 0 | 5 | 2 | 3 | 1 | 22 | 5 |
| Total | 23 | 18 | 35 | 35 | 19 | 17 | 12 | 10 | 89 | 80 |
| P-value (Wilcoxon test) | 0.009 | < 0.001 | 0.009 | 0.03 | < 0.001 | |||||
| VAS Pain c | ||||||||||
| Mean values | 56 | 34 | 44 | 24 | 51 | 32 | 46 | 31 | 48 | 29 |
| SD | 23 | 29 | 21 | 19 | 23 | 23 | 24 | 23 | 22 | 23 |
| Change in VAS pain | 22 | 21 | 19 | 15 | 20 | |||||
| SD | 38 | 25 | 13 | 25 | 25 | |||||
| 95% confidence intervaI | 0.4–44 | 12–30 | 12–26 | -2.6–33 | 14–26 | |||||
| P-value (paired t-test) | 0.05 | < 0.001 | < 0.001 | 0.09 | < 0.001 | |||||
a Cartilage repair was defined as: an autologous chondrocyte implantation (with a preceding biopsy), an osteochondral cylinder transfer, microfracture, or fixation of osteochondral fragment.
b Refers to the number of patients who attended follow-up (FU) in relation to the number of patients at baseline (BL).
c VAS: visual analog scale with zero representing a pain-free joint and 100 representing “severe pain”.