TABLE 2.
Characteristics of Included Studiesa
| First author (Year) | Study Type (LOE) | Definition of BDDH | No. of Patients | Mean Age, y | Mean ± SD Follow-up, mo | Outcome Measures |
|---|---|---|---|---|---|---|
| Hip arthroscopic surgery | ||||||
| Beck4 (2019) | Cohort (3) | LCEA, 20°-25° | 112 | 33.6 ± 12.7 | 24 | mHHS, HOS-ADL, HOS-SSS, iHOT-12 |
| Chaharbakhshi7 (2017) | Cohort (3) | LCEA, 18°-25° | 40 | LT tear: 29.6 ± 12.2; no LT tear: 26.8 ± 11.5b | 54.3 | mHHS, NAHS, HOS-SSS, VAS pain, satisfaction |
| Cvetanovich12 (2017) | Cohort (3) | LCEA, 18°-25° | 36 | 31.5 ± 11.8 | 31.2 ± 7.2 | mHHS, HOS-SSS, HOS-ADL, satisfaction |
| Domb14 (2018) | Case series (4) | LCEA, 18°-25° | 19 (21 hips) | 22.9 | 68.8 ± 6.4 | mHHS, NAHS, HOS-SSS, VAS pain, satisfaction |
| Evans17 (2017) | Therapeutic (4) | LCEA, 20°-25° | 21 | 15.5 | 26.3 | mHHS, NAHS, HOS-SSS, HOS-ADL, VAS pain, satisfaction |
| Fukui18 (2015) | Therapeutic (4) | LCEA, 20°-25° | 102 | 35 | 40 | mHHS, HOS-ADL, HOS-SSS, SF-12 PCS, SF-12 MCS, WOMAC, satisfaction |
| Hatakeyama22 (2018) | Case-control (3) | LCEA, 20°-25° | 45 | 31.4 | 42.5 | mHHS, NAHS |
| Maldonado27 (2018) | Case-control (3) | LCEA, 18°-25° | 115 (122 hips) | Success: 23.5 ± 7.5; failure: 28.5 ± 7.8c | Success: 39.2 ± 17.3; failure: 42.8 ± 20.4 | mHHS, NAHS, HOS-SSS, VAS pain, satisfaction |
| Nawabi34 (2016) | Cohort (3) | LCEA, 18°-25° | 46 (55 hips) | 29.8 ± 9.4 | 31.3 ± 7.6 | mHHS, HOS-SSS, HOS-ADL, iHOT-33, satisfaction |
| Yoon48 (2019) | Therapeutic (4) | LCEA, 20°-25° | 45 (47 hips) | 39.2 ± 11.8 | 25.9 | mHHS, NAHS, VAS pain, satisfaction |
| PAO | ||||||
| McClincy29 (2019) | Therapeutic (4) | LCEA, 18°-25° | 49 | 26.5 ± 8 | 26.4 | mHHS, UCLA, HOOS, SF-12 |
| Mose32 (2019) | Cohort (3) | LCEA, 20°-25° | 44 | 34.1 | 24 | WOMAC, OHS, SF-36 |
aBDDH, borderline developmental dysplasia of the hip; HOOS, Hip disability and Osteoarthritis Outcome Score; HOS-ADL, Hip Outcome Score–Activities of Daily Living; HOS-SSS, Hip Outcome Score–Sport-Specific Subscale; iHOT-12, 12-Item International Hip Outcome Tool; iHOT-33, 33-Item International Hip Outcome Tool; LCEA, lateral center-edge angle; LOE, level of evidence; LT, ligamentum teres; MCS, Mental Component Summary; mHHS, modified Harris Hip Score; NAHS, Nonarthritic Hip Score; OHS, Oxford Hip Score; PAO, periacetabular osteotomy; PCS, Physical Component Summary; SF-12, 12-Item Short Form Health Survey; SF-36, 36-Item Short Form Health Survey; UCLA, University of California, Los Angeles; VAS, visual analog scale; WOMAC, Western Ontario and McMaster Universities Arthritis Index.
bThe patients with LT tears were matched in a 1:1 ratio to patients without LT tears based on the following criteria: sex, age at surgery ±10 years, obesity (body mass index <30 vs ≥30), labral treatment type (repair vs selective debridement), and microfracture.
cThe “success” group consisted of all patients who achieved the Patient Acceptable Symptom State (PASS) of an mHHS score ≥74 and underwent no ipsilateral hip surgery subsequent to their index arthroscopic surgery. The “failure” group was composed of patients who did not achieve the PASS at latest follow-up or required secondary arthroscopic surgery or conversion to total hip arthroplasty.