| Author | Year | Level of evidence | Sample | Follow-up | Technique | Outcome | Re-tear rate | Comparison |
|---|---|---|---|---|---|---|---|---|
| Shen et al. [30] | 2014 | Systematic review, meta-analysis | 428 patients/6 studies | >6 months (different for each study) | Single-row vs double-row | ASES, Constant, UCLA | Risk ratio for double-row 1,71(95% CI) RR for single-row 2,16 (95% CI) |
1) Functional scores: no difference between single and double row technique 2) Double-row technique decreased the incidence of re-tears (especially partial-thickness) compared to single-row 3) No difference to clinical outcome between the 2 techniques |
| Kim et al. [33] | 2014 | Cohort study level III |
65 patients with retear after full-thickness rotator cuff tear repair | >6months | Single-row technique (SRT) Suture-bridge technique (SBT) Knotless suture-bridge technique (K-SBT) |
MRI at least 6months postoperative Type 1: unhealed tendons Type 2: medially ruptured tendons with a healed footprint Type 3: unable to classify |
- | 1) 21 patients SRT 22 patients SBT 22 patients K-SBT 2) Type 1: 71,4% in SRT 40,9% in SBT 54,5% in K-SBT Type 2: 23,8% in SRT 59% in SBT 40,9% in K-SBT 3) No significant difference between 3 groups (p=0,195) 4) Significant difference between SRT and SBT groups alone (p=0,049) 5) No significant differences for either type 1 (p=0,121) or type 2 retears (p=0,064) among 3 groups 6) No significant differences in type 1 (P=0,281) or type 2 full-thickness re-tears (P-0,117) among 3 groups 7) In pairs group comparison, significant difference in type 2 full-thickness re-tears between SRT and SBT groups alone (P=0,037) 8) Conclusion: SBT has different retear pattern than SRT, K-SBT retear pattern is no different from that of SRT |
| Nho et al. [7] | 2009 | Level III, systematic review of levels I to III | All studies from 1966 to 2008 which compare SRT to DRT Excluded the studies that lacked comparison group (case series)-only 5 studies remained |
- | - | - | - | 1) No clinically significant differences between SRT and DRT 2) Some studies report that DRT may improve tendon healing |
| Mascarenhas et al. [60] | 2014 | Level II, systematic review of level I and II studies | 8 meta-analyses (4 level I and 4 level I and II studies) | - | SR, DR | Oxman-Guyatt scores | - | 1) 6 meta-analyses no difference between SR and DR for patient outcomes 2) 2 favored DR vs SR for tears >3cm 3) 2 no structural healing differences between DR and SR 4) 3 DR superior to SR for tears>3cm 5) 2 DR superior to SR for all tears 6) 4 had Oxman-Guyatt scores<3 = major flaws |