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Table 1 Characteristics of studies included

From: Separate double-layer repair versus en masse repair for delaminated rotator cuff tears: a systematic review and meta-analysis

 YearSample size (ER/DR)Female (%)Mean age (years)InterventionCountryStudy designFollow-up (month)Relevant outcome
ERDR
Cha et al [12]201611/5339.1%ER63.7 ± 8.4
DR62.5 ± 7.6
Single-layer repairDual-layer double-row repair or dual-layer suture bridge repairKoreaRetrospective studyER28.1 ± 10.5
DR26.2 ± 9.7
VAS score; constant score; UCLA score; postoperative range of motion; retear rate
Kim et al [13]201648/3467.1%ER65.2 (45–76)
DR65.5 (47–78)
Conventional en masse repairSeparate double-layer double-row repairKoreaRCT studyER25.8 ± 1.5
DR25.9 ± 2.2
VAS score; constant score; ASES score; SST score; postoperative range of motion; retear rate
Ren et al [14]201726/2857.4%ER55.3 ± 8.4
DR53.6 ± 6.1
Whole-layer repairSeparate double-layer repairChinaRCT study12VAS score; constant score; ASES score; UCLA score; postoperative range of motion; retear rate
Nakamizo et al [15]201852/4651.0%ER65.8 ± 8.5
DR64.1 ± 9.4
En masse suture-bridgingDual-layer suture-bridgingJapanRetrospective studyER29.0 ± 9.1
DR27.6 ± 3.3
VAS score; UCLA score; SST score; postoperative range of motion; retear rate
Jia et al [16]201928/2942.1%ER54.0 ± 8.3
DR52.1 ± 7.5
Whole-layer repairDual-layer suture-bridgingChinaRetrospective study23.3 (21–24)VAS score; UCLA score; ASES score; constant score; postoperative range of motion; retear rate
  1. ER en masse repair, DR double-layer repair, RCT randomized controlled trial, VAS visual analog scale, ASES the American Shoulder and Elbow, Surgeons, UCLA the Shoulder Rating Scale of the University of California at Los Angeles, SST Simple Shoulder Test