Appendix 2.
Characteristics of included studies
| First author, year | Journal | Study design | Level of evidence | Sample size- patients (hips) | % Male | Mean age- years ± SD (range) | % Lost to Follow-up/ excluded post hoc |
|---|---|---|---|---|---|---|---|
| Ayeni, 2011 | J Bone Joint Surg Am | Case Report | 4 | 42 | 100% | 51 | None |
| Bardakos, 2008 | J Bone Joint Surg | Cohort Study | 2 | 71 (71) | 52% | 33 (27–41) | None |
| Basheer, 2016 | Bone Joint J | Case Series | 4 | 18 (19) | 50% | 19 (13–42) | None |
| Berkes, 2012 | Am J Orthop (Belle Mead, NJ) | Case Report | 4 | 3 (3) | 100% | 21 (17–27) | None |
| Boden, 2014 | Acta Orthop Belg | Observational | 4 | 120 (120) | Not reported | Median: 39 (14–67) | None |
| Boykin, 2013 | Knee Surg Sports Traumatol Arthrosc | Case Report | 5 | 1 (1) | 100% | 25 | None |
| Büchler, 2013 | Arthroscopy | Retrospective Comparative | 3 | 201 (201) | 54% | 32.5 | 18% |
| Byrd, 2011 | Arthroscopy | Case Series | 4 | 100 (100) | 67% | 34 (13–67) | None |
| Centinkaya, 2014 | Orthopedics | Case Series | 4 | 2 (2) | 0% | 39.5 (37–42) | None |
| Chahal, 2015 | Am J Sports Med | Cohort Study | 2 | 130 (130) | 42.3% | 35.6 ± 11.7 | None |
| Cloisy, 2010 | J Bone Joint Surg | Case Series | 4 | 35 (35) | 80% | 34 (16–48) | None |
| Dippmann, 2014 | Knee Surg Sports Traumatol Arthrosc | Case Series | 4 | 87 | 37% | 38 (15–63) | 16% |
| Domb, 2013 | Arthroscopy | Matched Comparative Study | 2 | 30 (30) | 20% | Not reported | None |
| Domb, 2014 | Arthroscopy | Case Series | 4 | 43 (47) | 49% | 37 (16–70) | None |
| Fabricant, 2012 | J Bone Joint Surg Am | Case Series | 4 | 21 (27) | 57% | 17.6 (14.5–19.9) | None |
| Fabricant, 2015 | Clin Orthop Relat Res | Prognostic Study | 2 | 243 (243) | 49 % | 29.2 | None |
| Ferro, 2015 | Arthroscopy | Case Series | 4 | 180 (180) | Not reported | 34 | None |
| Frank, 2014 | Am J Sports Med | Cohort Study | 3 | 64 (64) | 38% | 33 | None |
| Fritz, 2010 | Arthroscopy | Case Report | 4 | 2 (2) | 50% | 35 (18–52) | None |
| Fowler, 2010 | Arthroscopy | Case Report | 4 | 1 (1) | 100% | 42 | None |
| Fukui, 2016 | Int J Surg Case Rep | Case Report | 4 | 1 (1) | 100% | 53 | None |
| Gedouin, 2010 | Orthop Traumatol Surg Res | Case Series | 4 | 110 (111) | 71% | 31 (16–49) | None |
| Gupta, 2014 | Am J Sports Med | Case Series | 4 | 47 (47) | 60% | 37.2 (32–47) | None |
| Hammoud, 2012 | Arthroscopy | Case Series | 4 | 38 (38) | 100% | 31 (19–35) | None |
| Hartmann, 2009 | Arch Orthop Trauma Surg | Case Series | 4 | 32 (33) | Not reported | 31.1 (15–47) | 3% |
| Haviv, 2010 | J Bone Joint Surg Br | Case Series | 4 | 166 (170) | 80% | 37 (14–68) | None |
| Haviv, 2010 | Orthopedics | Case Series | 4 | 82 (164) | 82% | 29 (14–63) | None |
| Horisbeger, 2010 | Clin Orthop Relat Res | Case Series | 4 | 19 (19) | 53% | 47.3 (22–65) | 5% |
| Horisberger, 2010 | Arthroscopy | Case Series | 4 | 88 (105) | 70% | 40.9 (17–66) | None |
| Ilizaliturri, 2007 | J Bone Joint Surg Br | Case Series | 4 | 13 (14) | 46% | 30.6 (24–39) | None |
| Ilizaliturri, 2008 | J Arthroplasty | Case Series | 4 | 18 (18) | 56% | 34 (27–43) | None |
| Javed, 2011 | J Bone Joint Surg. | Cohort Study | 3 | 40 (40) | 65% | 65 (60–82) | None |
| Kaya, 2014 | Arthroscopy | Case Series | 4 | 77 (77) | 42% | 47.5 (18–78) | None |
| Kemp, 2014 | Br J Sports Med | Case Series | 4 | 100 | 51% | 36 | None |
| Krekel, 2011 | J Med Case Rep | Case Report | 4 | 1 (1) | 100% | 50 | None |
| Krych, 2013 | Arthroscopy | Randomized Controlled Study | 1 | 36 | 0% | 39 (19–59) | None |
| Larson, 2008 | Arthroscopy | Case Series | 4 | 96 (100) | 56% | 34.7 (16–64) | None |
| Larson, 2011 | Clin Orthop Relat Res | Case Series | 4 | 210 (227) | 59% | 31.8 (14–61) | 29% |
| Larson, 2012 | Am J Sports Med | Cohort | 2 | 90 (94) | 62% | 34 | 7% |
| Laude, 2009 | Clin Orthop Relat Res | Therapeutic Study | 2 | 91 (94) | 52% | 33.4 (16–56) | 6% |
| Leunig, 2012 | Arthroscopy | Case Series | 4 | 141 (152) | Not reported | 77 | None |
| Lincoln, 2009 | Arthroscopy | Case Series | 4 | 14 (16) | 71% | Not reported | 18% |
| Más Martínez, 2015 | Arthroscopy | Case Report | 4 | 1 (1) | 0% | 58 | None |
| Malviya, 2012 | Br J Sports Med | Case Series | 4 | 122 (122) | 61% | 35.4 (16–64) | None |
| Malviya, 2013 | Orthop Relat Res | Case Series | 4 | 80 (80) | 62.5% | 36 (16–59) | None |
| Matsuda, 2013 | Am J Sports Med | Cohort | 3 | 54 | 59% | 34.6 + 37.5 | None |
| Matsuda, 2014 | Arthrosc Tech. | Case Report | 4 | 1 (2) | 100% | 26 | None |
| Mei-Dan, 2014 | Arthroscopy | Retrospective Comparative Study | 3 | 73 (116) | 55% | 33 (18–35) | 4% |
| Nepple, 2009 | J Arthroplasty | Cohort | 2 | 48 (48) | 60% | 37.4 | None |
| Nossa, 2014 | Curr Orthop Pract | Cohort Study | 2 | 362 (362) | 40.6% | 40.4 (15–79) | None |
| Ozturk, 2013 | Arch of Orthop Trauma Surg | Case Report | 4 | 1 (1) | 100% | 45 | None |
| Palmer, 2012 | Arthroscopy | Case Series | 4 | 185 (201) | 53.5% | 40.2 | 4.2% |
| Park, 2013 | Arthrosc Tech | Case Report | 4 | 1 (1) | 100.0% | 45 | None |
| Park, 2014 | Arthrosc Tech | Case Series | 4 | 197 (200) | 49% | 44.64 (19–70) | None |
| Philippon, 2007 | Knee Surg Sports Traumatol Arthrosc | Case Series | 4 | 45 (45) | 93% | 31 (17–61) | None |
| Philippon, 2007 | Knee Surg Sports Traumatol Arthrosc | Case Series | 4 | 301 (301) | 51% | 40 (11–72) | None |
| Philippon, 2008 | J Pediatr Orthop | Case Series | 4 | 16 (16) | 88% | 15 (11–16) | None |
| Philippon, 2012 | Arthroscopy | Case Series | 4 | 107 (107) | Not reported | 57 (50–77) | 30% |
| Philippon, 2014 | J Pediatr Orthop | Case series | 4 | 7 (7) | 57% | 42 ± 8 (28–50) | None |
| Polat, 2013 | Acta Orthop Traumatol Turc | Case Series | 4 | 42 (42) | 60% | 35.1 (16–52) | None |
| Randelli, 2010 | J Orthop Traumatol | Retrospective comparative study | 3 | 300 | 60% | 37.6 | 5% |
| Redmond, 2015 | Am J Sports Med | Cohort | 3 | 174 (190) | 33 | None | |
| Sansone, 2013 | Knee Surg Sports Traumatol Arthrosc | Case Report | 4 | 2 (2) | 50% | 26 | None |
| Sansone, 2015 | Orthop J Sports Med | Case Series | 4 | 85 (115) | 80% | 25 ± 5 | None |
| Sekiya, 2009 | Orthopedics | Case Report | 4 | 1 (2) | 100% | 17 | None |
| Stähelin, 2008 | Arthroscopy | Case Series | 4 | 22 (22) | 68% | 45 (18–67) | None |
| Tran, 2013 | ANZ J Surg | Case Series | 4 | 34 (41) | 85% | 15.7 (11–18) | None |
| Whiting, 2015 | Orthopedics | Case Report | 4 | 1 (1) | 0% | 48 | None |