Table 7.
Review of current literature
| Author | Followup (range) | Number of hips | Outcome measures | Restoration of function | Factors affecting outcome | Survivorship (TKA as end point) | |
|---|---|---|---|---|---|---|---|
| Positively | Negatively | ||||||
| Awan and Murray [1] | 1.5 years (1–3.7) | 22 | Questionnaire (pain, mechanical symptoms, activity levels, sporting activities) | Preoperative: 67.7 median, postoperative: 84 median | Mechanical symptoms with confirmed labral pathology | ||
| Boyer and Dorfman [2] | 6.5 years (1–16) | 111 | Questionnaire (satisfaction, pain, mobility), telephone, or office visit | 56.7% had “excellent or good outcomes” | Older age | 83% | |
| Byrd and Jones [4] | 10 years | 52 | mHHS (pain, function) | Preoperative: 56 median, postoperative: 81 median | Symptom duration < 18 months, normal center-edge angles, traumatic onset of symptoms | Arthritis (major predictor), older age | 73% |
| Farjo et al. [10] | 2.8 years (1–8.3) | 28 | Questionnaire (pain, mechanical symptoms, activity level, daily living) versus office visit or telephone | 46% had “good to excellent results” (71% and 21% in nonarthritis and arthritis groups, respectively) | Presence of arthritis (radiographic confirmation), or acetabular or femoral chondromalacia (arthroscopic confirmation) | 71% (86% without arthritis, 57% with arthritis) | |
| Kamath et al. [15] | 4.8 years | 52 | mHHS, clinical outcomes | Preoperative: 56.8 average, postoperative: 80.4 average, 56% had “good or excellent outcomes” | Left side, high preoperative activity, symptom duration > 18 months | Smoking, secondary gain issues (not chondromalacia and arthritis) | 94% |
| Kim et al. [17] | 4.2 years | 43 | Japanese Orthopaedic Association pain score | Arthritis group: 0.76 preoperative to 2.38 postoperative, nonarthritis group: 0.75 preoperative to 1.9 postoperative | Femoroacetabular impingement | ||
| Londers and Van Melkebeek [20] | 6 years (5–10) | 56 | 80.4% showed improvement, 80% would undergo procedure again | Grade of articular damage | 88% | ||
| Margheritini and Villar [21] | 1.5 years | 133 | mHHS | 61% showed improvement, 36% had “good or excellent results” | Older age, severity of arthritis | ||
| Philippon et al. [28] | 2.3 years (2–2.9) | 112 | mHHS | Preoperative: 58 average, postoperative: 84 average, median patient satisfaction 9/10 | Preoperative mHHS, joint space narrowing ≥ 2 mm, repair of labral pathology (versus débridement) | 91% | |
| Streich et al. [31] | 2.8 years (2–4) | 50 | VAS, mHHS, Larson hip score | No degenerative changes of the articular cartilage surface | Articular cartilage lesions | ||
| Walton et al. [32] | 70 | Modified Farjo and Glick classification | Chondral degradation (at arthroscopy), Evidence of degenerative changes on plain radiographs | ||||
| McCarthy et al. [current study] | 13 years (10–20) | 111 | Eventual THA date or Nonarthritic hip score from mailings, telephone, or office visits | Average postoperative: 87.3 | Older age and older age group (≥ 40 years), femoral Outerbridge grade, acetabular Outerbridge grade | 91% at 1 year, 75% at 5 years, 63% at 10 years | |
mHHS = modified Harris hip score; VAS = visual analog scale.