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Table 1 Included and results of individual studies

From: Evaluation of outcome reporting trends for femoroacetabular impingement syndrome- a systematic review

Author Year Level of evidence Country Study type Follow-up RTS Participants Included PROMs Hip specific PROMS Men% Surgery
Abrahamson, J. [1] 2020 III Sweden Retrospective 23.4 y 551 HAGOS, iHOT-12, HSAS 3 77 ARTHROSCOPIC
Aguilera-Bohórquez, B. [2] 2020 IV Colombia Retrospective 12 n 17 WOMAC 1 47 ARTHROSCOPIC
Atzmon, R. [3] 2019 III Israel Retrospective 50a n 64 HOS, mHHS, satisfaction 2 74 ARTHROSCOPIC
Avnieli, I. B. [4] 2020 III Israel Retrospective 24 y 133 HOS, mHHS, VAS satisfaction 2 62 ARTHROSCOPIC
Balazs, G. C. [5] 2018 II USA Prospective 1.5 n 59 HAGOS, iHOT-33, PCS, VAS pain 2 54 ARTHROSCOPIC
Barastegui, D. [6] 2018 IV Spain Retrospective 24 y 21 HOS (ADL + SS), mHHS, VAS pain 2 100 ARTHROSCOPIC
Bardakos, N. V. [7] 2008 III England Retrospective 12 n 71 mHHS 1 58 ARTHROSCOPIC
Basques, B. A. [8] 2019 III USA Retrospective 24 n 624 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 35 ARTHROSCOPIC
Beaulé, P. E[10] 2017 IV Canada Prospective 24.5 n 10 HOOS 1 100 ARTHROSCOPIC
Beaulé, P. E. [9] 2007 IV Canada Retrospective 36 y 34 SF-12, UCLA, WOMAC 1 53 OPEN
Beck, E. C. [12] 2019 III USA Retrospective 32.9 n 108 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 x ARTHROSCOPIC
Beck, E. C. [14] 2020 III USA Retrospective 24 n 249 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 35 ARTHROSCOPIC
Beck, E. C. [16] 2020 IV USA Prospective 6 n 74 HOS (ADL + SS), iHOT-12 2 23 ARTHROSCOPIC
Beck, E. C. [17] 2020 III USA Retrospective 24 n 647 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 24 ARTHROSCOPIC
Beck, E. C. [15] 2020 III USA Retrospective 24 n 384 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 32 ARTHROSCOPIC
Beck, E. C. [11] 2020 III USA Retrospective 50 n 264 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 34 ARTHROSCOPIC
Beck, E. C. [13] 2019 III USA Retrospective 24 n 336 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 30 ARTHROSCOPIC
Beck, M. [18] 2004 IV Switzerland Retrospective 56.4 n 19 The Merle d'Aubigné and Postel hip score 1 74 OPEN
Bennett, A. N. [19] 2016 IV England Prospective 12 n 101 FAA, NAHS, VAS pain 1 75 ARTHROSCOPIC
Bolia, I. K. [20] 2019 III USA Retrospective 80a n 126 HOS (ADL + SS), mHHS, SF-12, VAS satisfaction 2 57 ARTHROSCOPIC
Boone, G. R. [21] 2012 IV USA Retrospective 45.6 n 21 UCLA 0 64 OPEN
Briggs, K. K. [22] 2019 III USA Retrospective 61.2 n 230 HOS (ADL + SS), mHHS, SF12, VAS satisfaction, WOMAC, Tegner 3 x ARTHROSCOPIC
Bryan, A. J. [23] 2016 III USA Retrospective 24 n 201 HOS (ADL + SS), mHHS 2 69 ARTHROSCOPIC
Byrd, J.W. [24] 2009 IV USA Prospective 16 n 207 mHHS 1 67 ARTHROSCOPIC
Byrd, J. W. [25] 2016 III USA Retrospective 37a n 108 mHHS 1 52 ARTHROSCOPIC
Byrd, J. W. [26] 2019 III USA Retrospective 18.9 n 42 iHOT, mHHS 2 52 ARTHROSCOPIC
Campoamor González, M. [27] 2020 III Spain Retrospective 6 n 57 HHS 1 68 INCLUDING BOTH
Cancienne, J. [28] 2019 III USA Retrospective 24 n 1102 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 35 ARTHROSCOPIC
Carreira, D. S. [29] 2018 IV USA Prospective 12 n 45 HOS (ADL + SS), mHHS, iHOT-12, SF-12 3 36 ARTHROSCOPIC
Casartelli N. [30] 2014 IV Switzerland Prospective 30 y 8 HOS (ADL + SS), satisfaction (1–5), pain change (1–5) 1 38 ARTHROSCOPIC
Catelli, D. S. [31] 2019 II Canada Prospective 24 n 11 HOOS 1 100 INCLUDING BOTH
Catelli, D. S. [32] 2019 II Canada Prospective 24 n 11 HOOS 1 100 INCLUDING BOTH
Cetinkaya, S. [33] 2016 III Turkey Retrospective 45.2 n 67 HOS, VAS pain 1 57 ARTHROSCOPIC
Chaharbakhshi, E. O. [34] 2019 III USA Retrospective 47a n 107 HOS (SS), iHOT-12, mHHS, NAHS, VAS pain, VAS satisfaction 4 66 ARTHROSCOPIC
Chahla, J. [36] 2019 III USA Retrospective 27.8 n 634 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 33 ARTHROSCOPIC
Chahla, J. [37] 2019 III USA Retrospective 24 n 600 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 36 ARTHROSCOPIC
Chahla, J. [35] 2019 iii USA Prospective 12 n 153 HOS (ADL + SS), HPSES, mHHS, VAS pain, VAS satisfaction 3 29 ARTHROSCOPIC
Chambers, C. C. [38] 2019 IV USA Retrospective 24 n 142 HOOS, mHHS, SF-12, VAS pain 2 51 ARTHROSCOPIC
Chiron, P. [39] 2012 IV France Prospective 26.4 y 108 HHS, MOS, NAHS, SF-36, satisfaction (1–5), VAS pain, WOMAC 3 85 MINIMALLY INVASIVE APPROACH
Chladek, P. [40] 2015 III Czech Republic Retrospective 40 n 100 NAHS, WOMAC 2 x MINI-INVASIVE SURGERY AND OPEN
Cho, S. H. [41] 2015 IV Korea Retrospective 24 n 11 mHHS, UCLA 1 36 ANTERIOR MINI-OPEN (AMO) AND OPEN
Christensen, J. C. [43] 2019 III USA Retrospective 24 n 173 iHOT-12 1 0 ARTHROSCOPIC
clapp, I. M. [44] 2020 II USA Prospective 19.9 n 85 HOS (ADL + SS), mHHS, iHOT-12, PCS, TSK, VAS pain, VAS satisfaction, 3 25 ARTHROSCOPIC
Claßen, T. [45] 2016 II Germany Prospective 6 n 177 NAHS, WOMAC 2 46 ARTHROSCOPIC
Comba, F. [47] 2016 IV Argentina Prospective 91 n 42 mHHS, WOMAC 2 64 ARTHROSCOPIC
Cunningham, D. J. [48] 2017 II USA Prospective 1.5 n 62 iHOT-12, PCS, PHQ, VAS pain 1 33 ARTHROSCOPIC
Cvetanovich, G. L. [49] 2017 III USA Retrospective 31.2 n 348 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 42 ARTHROSCOPIC
Cvetanovich, G. L. [50] 2018 IV USA Prospective 24 n 386 HOS (ADL + SS), mHHS, VAS pain 2 39 ARTHROSCOPIC
Di Benedetto, P. [51] 2016 II Italy Prospective 12 n 65 mHHS, MHOT 2 x ARTHROSCOPIC
Domb, B. G. [55] 2013 II USA Prospective 25.2 n 30 HOS (ADL + SS), mHHS, NAHS, VAS pain, VAS satisfaction 3 20 INCLUDING BOTH
Domb, B. G. [52] 2018 III USA Retrospective 50 n 130 HOS (SS), mHHS, NAHS, VAS pain, VAS satisfaction 3 28 ARTHROSCOPIC
Domb, B. G. [54] 2020 III USA Retrospective 24 n 148 HOS (SS), iHOT-12, mHHS, NAHS, SF-12, VAS pain, VAS satisfaction, VR-12 4 41 ARTHROSCOPIC
Domb, B. G. [53] 2014 III USA Retrospective 24 n 33 HOS (ADL + SS), mHHS, NAHS, VAS pain, VAS satisfaction 3 64 ARTHROSCOPIC
Drager, J. [56] 2020 III USA Retrospective 12 n 346 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 28 ARTHROSCOPIC
Ellis, S. H. [57] 2020 iii Australia Retrospective 12 n 79 iHOT-33 1 42 ARTHROSCOPIC
Ernat, J. J. [59] 2019 IV USA Retrospective 12 n 182 mHHS, SANE, satisfaction score, VAS pain, VR-12, WOMAC 2 74 MINI-OPEN ARTHROSCOPIC-ASSISTED
Ernat, J. J. [58] 2015 IV USA Retrospective 43.2 n 93 mHHS, SANE, satisfaction, VAS pain, VR-12, WOMAC 2 70 MINI-OPEN ARTHROSCOPIC-ASSISTED
Espinosa, N. [60] 2007 III Switzerland Retrospective 24 n 52 The Merle d’Aubigne´-Postel score 1 x OPEN
Essilfie, A. A. [61] 2020 II USA Prospective 24 n 126 mHHS, NAHS 2 67 ARTHROSCOPIC
Fabricant, P. D. [62] 2015 III USA Retrospective 21 n 243 HOS (ADL + SS), iHOT-33, mHHS 3 49 ARTHROSCOPIC
Ferro, F. P. [63] 2015 IV USA Retrospective 30 n 184 mHHS, SF-12, WOMAC 2 x ARTHROSCOPIC
Fiorentino, G. [64] 2015 IV Italy Retrospective 36 n 38 mHHS, patient satisfaction 1 59 ARTHROSCOPIC
Flores, S. E. [65] 2018 II USA Prospective 12 n 58 HOOS, mHHS, SF-12, VAS pain 2 53 ARTHROSCOPIC
Flores, S. E. [66] 2020 II USA Prospective 24 n 131 HOOS, mHHS, SF-12, VAS pain 2 45 ARTHROSCOPIC
Flores, S. E. [67] 2018 II USA Prospective 12 n 122 HOOS, mHHS, SF-12, VAS pain 2 47 ARTHROSCOPIC
Foreman, S.C. [68] 2020 II USA Prospective 12 n 42 HOOS 1 64 ARTHROSCOPIC
Frank, R. M. [69] 2019 III USA Retrospective 31.2 y 330 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 100 ARTHROSCOPIC
Frank, R. M. [71] 2018 IV USA Retrospective 31.1 y 59 HOS (ADL + SS), mHHS VAS pain, VAS satisfaction 2 38 ARTHROSCOPIC
Frank, R. M. [70] 2016 II USA Prospective 33.6 n 150 HOS (ADL + SS), mHHS, VAS satisfaction 2 50 ARTHROSCOPIC
Fukui, K. [73] 2015 IV USA Retrospective 42 n 28 HOS (ADL + SS), mHHS, SF-12, VAS satisfaction, WOMAC 3 57 ARTHROSCOPIC
Fukui. K. [72] 2015 IV USA Retrospective 40 n 100 HOS (ADL + SS), mHHS, SF-12, VAS satisfaction, WOMAC, 3 50 ARTHROSCOPIC
Gao, F. [75] 2020 IV China Prospective 24 n 27 iHOT-12, mHHS, VAS pain 2 56 ARTHROSCOPIC
Gicquel, T. [76] 2014 IV France Prospective 55.2 n 58 WOMAC, satisfaction (1–4) 1 63 ARTHROSCOPIC
Gigi, R. [77] 2016 III Israel Retrospective 30.4 n 106 HOS (ADL), mHHS 2 65 ARTHROSCOPIC
Grace, T. [78] 2018 IV USA Prospective X n 43 HOOS 1 58 ARTHROSCOPIC
Grace, T. [79] 2018 II USA Prospective X n 46 HOOS, VAS pain 1 59 ARTHROSCOPIC
Grant, L. F. [80] 2017 I England RCT 3 n 18 EQ-5D, NAHS 1 33 ARTHROSCOPIC
Graves, M. L. [81] 2009 IV USA Retrospective 38 n 46 The Merle d’Aubigne´-Postel score 1 54 OPEN
Griffin, D. R. [83] 2018 I England RCT 12 n 213 EQ-5D, iHOT-33, SF12, UCLA 1 58 ARTHROSCOPIC
Gupta, A. [86] 2014 IV USA Prospective 28.3 n 47 HOS (ADL + SS), mHHS, NAHS, VAS pain, VAS satisfaction 3 60 ARTHROSCOPIC
Gupta, A. [85] 2015 III USA Retrospective 23.1 n 680 HOS (ADL + SS), mHHS, NAHS, VAS pain, VAS satisfaction 3 33 ARTHROSCOPIC
Ha, Y. C. [87] 2020 IV Corea Retrospective 24 n 62 mHHS, UCLA, VAS pain, VAS satisfaction 1 90 ARTHROSCOPIC
Hamula, M. J. [88] 2020 III USA Retrospective 31.6 n 226 mHHS, NAHS 2 39 ARTHROSCOPIC
Haskel, J. D. [89] 2020 III USA Retrospective 24 n 149 mHHS, NAHS 2 25 ARTHROSCOPIC
Hassebrock, J. D. [90] 2019 III USA Retrospective 24 n 133 HOS (SS), iHOT-12, mHHS, NAHS, VAS pain, VAS satisfaction 4 47 ARTHROSCOPIC
Herrmann, S. J. [91] 2016 IV Germany Retrospective 32 n 79 HOS (ADL + SS) 1 62 ARTHROSCOPIC
Horisberger, M. [92] 2010 IV Switzerland Prospective 36 n 20 NAHS, VAS pain 1 80 ARTHROSCOPIC
Hwang, J. M. [94] 2019 IV Korea Retrospective 43.6 n 9 HOS (ADL), mHHS, VAS pain 2 75 ARTHROSCOPIC
Ilizaliturri, V. M. [95] 2008 IV Mexico Prospective 24 n 19 WOMAC 1 58 ARTHROSCOPIC
İnan, U. [96] 2016 IV Turkey Retrospective 48 n 21 HHS 1 33 OPEN
Ishøi, L. [97] 2018 III Denmark Retrospective 33.1 y 189 HAGOS 1 51 ARTHROSCOPIC
Ishøi, L. [98] 2019 III Denmark Retrospective 33.1 y 184 HAGOS 1 50 ARTHROSCOPIC
Javed, A. [99] 2011 IV England Retrospective 30 n 40 mHHS, NAHS, satisfaction y/n 2 65 ARTHROSCOPIC
Jochimsen, K. N. [100] 2019 III USA Retrospective X n 127 HOOS 1 26 ARTHROSCOPIC
Jäger, M. [101] 2011 IV Germany Prospective 12 n 22 HHS 1 32 OPEN
Kaldau, N. C. [102] 2018 IV Denmark Retrospective 82.9b n 84 EQ-5D, HAGOS, HSAS 2 54 ARTHROSCOPIC
Kaplan, D. J. [103] 2020 IV USA Retrospective 76.5 n 103 HHS, mHHS, NAHS 3 32 ARTHROSCOPIC
Keating, T. C. [104] 2019 IV USA Retrospective 24 y 22 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 0 ARTHROSCOPIC
Kekatpure, A. L. [105] 2017 III Korea Retrospective 25.4 n 83 mHHS, NAHS, WOMAC 3 66 ARTHROSCOPIC
Kierkegaard, S. [107] 2020 II Denmark Prospective 12 y 60 HAGOS 1 37 ARTHROSCOPIC
Kierkegaard, S. [108] 2019 II Denmark Prospective 12 n 60 HAGOS 1 40 ARTHROSCOPIC
Kockara, N. [109] 2018 IV Turkey Retrospective 72 n 33 HHS 1 58 OPEN
Kouk, S. [110] 2020 III USA Retrospective 24 n 62 mHHS, NAHS 2 44 ARTHROSCOPIC
Krishnamoorthy, V. P. [112] 2019 III USA Retrospective 24 n 830 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 31 ARTHROSCOPIC
Krishnamoorthy, V. P. [111] 2019 III USA Retrospective 36.8 n 743 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 32 ARTHROSCOPIC
Krych, A. J. [113] 2016 III USA Retrospective 24 n 104 HOS (ADL + SS), mHHS 2 38 ARTHROSCOPIC
Krych, A. J. [114] 2013 I USA RCT 32 n 36 HOS (ADL + SS) 1 0 ARTHROSCOPIC
Kunze, K. N. [115] 2019 III USA Retrospective 24 n 1094 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 34 ARTHROSCOPIC
Kunze, K. N. [116] 2019 III USA Retrospective 24 n 306 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 42 ARTHROSCOPIC
Kunze, K. N. [117] 2019 IV USA Prospective 6 n 52 HOS (ADL + SS), iHOT-12, mHHS, PSQI, VAS pain 3 37 ARTHROSCOPIC
Lall, A. C. [118] 2020 III USA Retrospective 54.9 n 84 HOS (SS), iHOT-12, mHHS, NAHS, SF-12, VAS pain, VR-12 4 36 ARTHROSCOPIC
Lansdown, D. A. [120] 2018 IV USA Retrospective 24 n 707 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 36 ARTHROSCOPIC
Lansdown, D. A. [121] 2018 III USA Retrospective 24 n 301 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 36 ARTHROSCOPIC
Lee, S. [122] 2015 IV USA Retrospective 21 n 131 mHHS, VAS satisfaction 1 56 ARTHROSCOPIC
Lerch, S. [123] 2015 IV Germany Prospective 3.3 n 40 HOOS, WOMAC 2 x ARTHROSCOPIC
Levy, D. M. [124] 2017 III USA Retrospective 24 n 84 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 36 ARTHROSCOPIC
Lindman, I. [125] 2020 IV Sweden Prospective 60 n 64 HAGOS, HSAS, iHOT-12, VAS hip function, EQ-5D, EQ VAS, satisfaction y/n 3 81 ARTHROSCOPIC
Malagelada, F. [127] 2015 IV Spain Prospective 12 y 14 LISOH, VAS pain 1 64 MINI-OPEN TECHNIQUE
Maldonado, D. R. [128] 2020 III USA Retrospective 24 n 145 HOS (SS), iHOT-12, mHHS, NAHS, SF-12, VAS pain, VAS satisfaction, VR-12 4 12 ARTHROSCOPIC
Malloy, P. [129] 2019 IV USA Retrospective 26.4 n 50 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 36 ARTHROSCOPIC
Mannion, A. F. [130] 2013 II Switzerland Prospective 12 n 86 GTO, OHS, NASS 2 44 MINI-OPEN AND ARTHROSCOPIC
Mansell, N. S. [131] 2018 I USA RCT 12 n 40 GRC, HOS (ADL + SS), iHOT-33, PCS, Self-motivation inventory score, VAS pain 2 53 ARTHROSCOPIC
Mardones, R. [132] 2016 IV Chile Retrospective 52.8 n 23 mHHS, VAS pain 1 22 ARTHROSCOPIC
Mardones, R. [133] 2016 IV Chile Retrospective 48 n 15 mHHS, VAS pain, VHS 2 27 ARTHROSCOPIC
Martínez, D. [135] 2015 IV Colombia Retrospective 23.8 n 179 WOMAC 1 35 ARTHROSCOPIC
Mas Martinez, J. [136] 2020 IV Spain Retrospective 24 y 185 HOS (ADL + SS), iHOT-12 mHHS 3 77 ARTHROSCOPIC
Matsuda, D. K. [137] 2013 III USA Retrospective 30 n 54 NAHS, satisfaction scale 1 59 ARTHROSCOPIC
Matsuda, D. K. [138] 2017 III USA Retrospective 12 n 77 NAHS, satisfaction (1–5) 1 52 ARTHROSCOPIC
Matsuda, D. K. [139] 2019 III USA Retrospective 24 n 437 iHOT-12 1 67 ARTHROSCOPIC
Menge, T. J. [140] 2017 III USA Retrospective 120 n 154 HOS (ADL + SS), mHHS, SF-12, VAS satisfaction 2 52 ARTHROSCOPIC
Mladenović, D. [141] 2014 IV Serbia Retrospective 12 n 21 WOMAC 1 23 OPEN
Naal, F. D. [144] 2017 III Switzerland Retrospective 44.4 n 232 EQ-5D, EQ-VAS, OHS, satisfcation scale (1–5), UCLA 1 49 INCLUDING BOTH
Nabavi, A. [145] 2015 III Australia Retrospective 12 n 253 mHHS, NAHS 2 50 ARTHROSCOPIC
Nakashima, H. [146] 2019 III Japan Retrospective 34.1 n 97 mHHS, NAHS 2 44 ARTHROSCOPIC
Nawabi, D. H. [147] 2016 III USA Retrospective 24 n 177 HOS (ADL + SS), iHOT-33, mHHS 3 46 ARTHROSCOPIC
Nepple, J. J. [148] 2015 IV USA Prospective X n 50 mHHS, SF-12 1 64 ARTHROSCOPIC
Nepple, J. J. [149] 2009 III USA Retrospective 24a n 48 mHHS 1 60 ARTHROSCOPIC AND LIMITED OPEN OSTEOCHONDROPLASIA
Nho, S. J. [150] 2019 III USA Retrospective 27.8 n 935 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 37 ARTHROSCOPIC
Nwachukwu, B. U. [151] 2020 III USA Retrospective 24 n 898 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 35 ARTHROSCOPIC
Nwachukwu, B. U. [152] 2018 III USA Retrospective 24 n 719 HOS (ADL + SS), iHOT-33, mHHS 3 47 ARTHROSCOPIC
Nwachukwu, B. U. [153] 2017 III USA Retrospective 12 n 364 HOS (ADL + SS), iHOT-33, mHHS 3 43 ARTHROSCOPIC
Palmer, A. J. R. [156] 2019 I England RCT 8 n 112 EQ-5D, EQ-VAS, HADS (anxiety + depression), HAGOS, HOS (ADL + SS), iHOT-33, NAHS, OHS, Pain detect score, UCLA 5 34 ARTHROSCOPIC
Park, M. S. [157] 2014 IV Korea Retrospective 28.2 n 197 mHHS, VAS satisfaction 1 49 ARTHROSCOPIC
Perets, I. [160] 2019 III USA Retrospective 60 n 52 HOS (SS), iHOT-12, mHHS, NAHS, VAS pain, VAS satisfaction 4 72 ARTHROSCOPIC
Perets, I. [161] 2018 III USA Retrospective 71 n 148 HOS (SS), mHHS, NAHS, VAS pain, VAS satisfaction 3 39 ARTHROSCOPIC
Perets, I. [159] 2018 IV USA Retrospective 60 n 94 HOS (SS), mHHS, NAHS, VAS pain, VAS satisfaction 3 45 ARTHROSCOPIC
Philippon, M. J. [164] 2010 IV USA Retrospective 24 y 28 mHHS, VAS satisfaction 1 100 ARTHROSCOPIC
Philippon, M. J. [162] 2009 IV USA Prospective 27.6 n 112 HOS (ADL + SS), mHHS, NAHS, VAS satisfaction 3 45 ARTHROSCOPIC
Philippon, M. J. [163] 2012 IV USA Prospective 35.7 n 153 HOS (ADL + SS), mHHS, SF-12, VAS satisfaction 2 47 ARTHROSCOPIC
Polesello, G. C. [165] 2012 IV Brazil Retrospective 34.3 y 47 mHHS, satisfaction 1 43 ARTHROSCOPIC
Polesello, G. C. [166] 2009 IV Brazil Retrospective 27 n 28 HHS 1 67 ARTHROSCOPIC
Potter, M. Q. [167] 2014 II USA Prospective X n 147 HOS (ADL + SS), mHHS, Modified zung depression scale, MSPQ 2 37 ARTHROSCOPIC
Przybyl, M. [168] 2018 III Poland Retrospective 24 y 129 mHHS, NAHS 2 100 ARTHROSCOPIC
Ragab, R. [169] 2018 IV Egypt Prospective 12.5 n 40 iHOT-12, mHHS 2 50 ARTHROSCOPIC
Ramos, N. [171] 2020 III USA Retrospective 12 n 70 mHHS 1 47 ARTHROSCOPIC
Ramos, N. [172] 2020 IV USA Retrospective 19.2 y 10 mHHS, satisfaction 1 100 ARTHROSCOPIC
Redmond, J. M. [173] 2015 III USA Retrospective 24 n 190 HOS (ADL + SS), mHHS, NAHS, VAS pain, VAS satisfaction 3 37 ARTHROSCOPIC
Rego, P. A. [174] 2018 III Portugal Retrospective 59 y 198 NAHS 1 56 INCLUDING BOTH
Ribas, M. [176] 2007 IV Spain Retrospective 29.2 y 32 The Merle d’Aubigné -Postel score, WOMAC 2 72 MINI-OPEN TECHNIQUE
Riff, A. J. [177] 2018 IV USA Retrospective 24 y 32 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 40 ARTHROSCOPIC
Rivera, E. [178] 2020 III Spain Retrospective 24 n 80 iHOT-33, mHHS, VAS pain 2 66 ARTHROSCOPIC
Roos, B. D. [179] 2017 III Brazil Retrospective 36a n 56 mHHS, NAHS 2 84 INCLUDING BOTH
Roos, B. D. [180] 2015 IV Brazil Retrospective 29.1 n 40 mHHS, NAHS 2 87 ARTHROSCOPIC
Rylander, J. H. [181] 2011 IV USA Prospective 12 n 11 Tegner 0 73 ARTHROSCOPIC
Saltzman, B. M. [182] 2017 III USA Retrospective 31.2 n 381 HOS (ADL + SS), mHHS, VAS pain, VAS satisfaction 2 39 ARTHROSCOPIC
Samaan, M. A. [183] 2020 II USA Prospective 7 n 10 HOOS 1 80 ARTHROSCOPIC
Sanders, T. L. [184] 2017 IV USA Retrospective 30 y 46 ADL, IHOT, mHHS, sport score, subjective level of function (1–4) 2 33 ARTHROSCOPIC
Sansone, M. [186] 2015 IV Sweden Prospective 12.3 n 85 EQ-5D, HAGOS, HSAS, iHOT-12, VAS overall hip function, satisfaction y/n 3 80 ARTHROSCOPIC
Sansone, M. [187] 2016 IV Sweden Prospective 26 n 75 EQ-5D, HAGOS, HSAS, iHOT-12, VAS overall hip function, satisfaction y/n 3 77 ARTHROSCOPIC
Sansone, M. [188] 2017 IV Sweden Prospective 25.4 n 289 EQ-5D, HAGOS, HSAS, iHOT-12, VAS overall hip function, satisfaction y/n 3 66 ARTHROSCOPIC
Sariali, E. [189] 2018 IV France Prospective 39.6 n 47 HHS, OHS 2 x ARTHROSCOPIC
Scanaliato, J. P. [190] 2018 III USA Retrospective 24 n 152 iHOT-12, mHHS, SF-12, VAS pain, VAS satisfaction 2 42 ARTHROSCOPIC
Shaw, K. A. [191] 2017 IV USA Prospective 6 n 11 HOS, mHHS 2 73 ARTHROSCOPIC
Shibata, K. R. [192] 2017 III USA Retrospective 18.9 y 98 HSAS, iHOT-33, mHHS 3 50 ARTHROSCOPIC
Skendzel, J. G. [194] 2014 III USA Retrospective 73 n 559 HOS (ADL + SS), mHHS, SF-12, VAS satisfaction, WOMAC 3 44 ARTHROSCOPIC
Skowronek, P. [195] 2017 IV Poland Retrospective 45 y 39 HHS, SF-36, VAS pain 1 64 MIN-OPEN DIRECT ANTERIOR APPROACH (DDA)
Sochacki, K. R. [198] 2018 III USA Retrospective X n 212 HOS (ADL + SS), iHOT-12, SF-36 2 44 ARTHROSCOPIC
Sochacki, K. R. [197] 2018 III USA Retrospective 12 n 77 BDI-2, HOS (ADL + SS), iHOT-33 2 27 ARTHROSCOPIC
Spencer-Gardner, L. [199] 2017 III Australia Retrospective 19 n 36 mHHS, NAHS 2 42 ARTHROSCOPIC
Srinivasan, S. C. [200] 2013 IV England Retrospective 22.3 n 26 NAHS, UCLA, VAS pain 2 42 COMBINED ARTHROSCOPIC AND OPEN
Stone, A. V. [201] 2019 IV USA Retrospective 24 n 626 HOS (SS), VAS pain, VAS satisfaction 1 31 ARTHROSCOPIC
Stone, A. V. [202] 2019 III USA Retrospective 24 n 688 HOS (ADL + SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 35 ARTHROSCOPIC
Stähelin, L. [203] 2008 IV Switzerland Prospective 6 n 22 NAHS, VAS pain 1 68 ARTHROSCOPIC
Thomas, D. D. [204] 2017 IV USA Retrospective 30 n 469 SANE, VAS pain 0 66 ARTHROSCOPIC
Tjong, V. K. [207] 2016 IV USA Prospective 24 y 23 HOS (SS), iHOT-12, mHHS, VAS pain, VAS satisfaction 3 35 ARTHROSCOPIC
Vahedi, H. [208] 2019 III USA Retrospective 49.9 n 601 mHHS, SF-36 1 54 ARTHROSCOPIC
Wadhwani, J. [209] 2018 IV Spain Retrospective 12 n 105 mHHS 1 50 ARTHROSCOPIC
Westermann, R. W. [210] 2018 III USA Retrospective X n 321 HOOS (pain + physical function), UCLA, VR-12 1 31 ARTHROSCOPIC
Wu, C. T. [211] 2019 IV Taiwan Retrospective 44 n 36 HHS, VAS pain 1 56 MINI-OPEN ARTHROSCOPIC-ASSISTED
Wörner, T. [212] 2019 III Sweden Retrospective 8.1 y 33 HAGOS, HSAS 2 88 ARTHROSCOPIC
Yoo, J. I. [214] 2017 IV Korea Retrospective 24 n 40 mHHS, UCLA, VAS pain 1 63 ARTHROSCOPIC
Yun, H. H. [215] 2009 IV Korea Retrospective 27.6 n 16 HHS 1 86 OPEN
Zhu, X. [217] 2020 I China RCT 3 n 100 HHS, PGA, VAS pain 1 51 ARTHROSCOPIC
Zimmerer, A. [218] 2018 II Germany Prospective 24.4 n 43 HOOS, WOMAC 2 72 ARTHROSCOPIC
Zusmanovich, M. [219] 2020 III USA Retrospective 25.2 n 34 mHHS, NAHS, VAS pain 2 41 ARTHROSCOPIC
Öhlin, A. [220] 2017 IV Sweden Prospective 24 n 198 iHOT-12, satisfaction y/n 1 62 ARTHROSCOPIC
  1. Abbreviations: n no, PROM Patient-reported Outcome Measures, RCT randomized control trial, RTS Return to sport, l y = yes. For abbrevaiations of PROMs, see Appendix, Table 3
  2. acombined mean value was calculated
  3. bmedian value