Table 4.
Study characteristics of included studies in this review
| Author and journal | Study design | Sample size | Follow up (mean range) | Number of patients lost to follow up | Final study sample size |
|---|---|---|---|---|---|
| Choong et al. (2012) J Athro | RCT (single centre) | 120 | 1 year | 9 | 111 |
| Lutzner et al. (2010) Knee Surg. Sports Trauma Arthos | RCT (single centre) | 80 | 1.8 years | 7 | 73 |
| Huang et al. (2012) Journal of Arthoplasty | RCT (single centre) | 111 | 5 years | 21 | 90 |
| Blakeney et al. (2014) The Knee | RCT (single centre) | 107 | 46 months | 14 | 93 |
| Gothesen et al. (2014) JBJS | RCT (multi-centre) | 194 | 5 years | 19 | 175 |
| Barrack et al. (2001) CORR | Case control (single centre) | 30 | 5.7 years | 2 | 28 |
| Stulberg et al. (2008) Orthopaedics | Case control (single centre) | 58 | 2.5 years | 6 | 52 |
| Nicoll and Rowley (2010) JBJS | Case control (single centre) | 61 | >1 year | 23 | 39 |
| Matziolis et al. (2010) Arch Orthop Trauma Surg | Case control (single centre) | 218 (from a database) | 5–10 years | 168 | 50 |
| Czurda et al. (2010) Knee Surg Sport Trau Arthrosc | Case control (single centre) | 38 | 2.2 years | 0 | 38 |
| Magnussen et al. (2011) CORR | Case control (single centre) | 608 | Median 4.7 years (2–19.8) | 55 | 553 |
| Bell et al. (2014) The Knee | Case control (single centre) | 127 | 1 year | 15 | 112 |
| Bankes et al. (2003) The Knee | Case series (single centre) | 198 | 6.5 years | 0 | 198 |
| Aglietti et al. (2007) CORR | Case series (single centre) | 64 | 8 Years | 19 | 53 |
| Longstaff et al. (2009) J Arthro | Case series (single centre) | 159 | 1 year | 9 | 146 |
| Bach et al. (2009) The Knee | Case series (single centre) | 105 | 10.8 years | 7 | 98 |
| Rienmüller et al. (2012) International Orthopaedics | Case series (single centre) | 219 | 5 Years | 15 | 204 |
| Howell et al. (2013b) Knee Surg Sport Trau Arthrosc | Case series (single centre) | 101 | 6–9 months | 1 | 101 |