Table 2.
Associations of BMI with pain/opioid use after THA
| First author | Year | Study design | n | Follow-up | BMI groups (% of patient) | Outcome measures | Associations of high BMI with postoperative pain/opioid use |
|---|---|---|---|---|---|---|---|
| Prentice [9] | 2019 | RC | 12,560 | 1 yr |
< 30 (60.8); 30–35 (24.5); > 35 (14.6) |
Opioid usage | Greater postoperative opioid use after initial 90-day recovery period |
| Li [13] | 2017 | RC | 2040 | 6 mo |
25–29.9 (37); 30–34.9 (22); 35–39.9 (10); ≥ 40 (4) |
PCS, HOOS | Worse pain at baseline and 6 months, more improvement postoperatively |
| Rajamaki [21] | 2015 | CC | 54 | 1–2 yr | < 30 (53); 30–35 (31); > 35 (16) | Questionnaire | Higher proportion of patients with pain |
| Judge [24] | 2014 | RS | 1431 | 1 yr |
< 25 (33); 25–30 (42); 30–35 (18); 35–40 (5.5); > 40 (1.7) |
OHS | Worse pain, low clinical difference |
| Motaghedi [26] | 2014 | PC | 60 | 1 d | < 25 (33); 25–30 (33); > 30 (33) | VRS | No association |
| Judge [2] | 2013 | PC | 1431 | 1–5 yr |
< 25 (33); 25–30 (42); 30–35 (18); 35–40 (5.5); > 40 (1.7) |
OHS | Worse pain |
| Jones [35] | 2012 | PC | 231 | 3 yr | > 35 (14) | WOMAC | Worse pain at 6 months; no association at 3 years |
| Liu [36] | 2012 | CC | 428 | 1 d | 30a | VAS for pain | Worse pain, low clinical significance |
| Smith [37] | 2012 | PC | 1318 | 3 yr | NA | HHS | Worse pain |
| Singh [46] | 2010 | CC | 5707, 3289 | 2 yr, 5 yr |
< 25 (24); 25–29.9 (39); 30–34.9 (24); 35–39.9 (8); ≥ 40 (1) |
Questionnaire | Worse pain |
| Busato [7] | 2008 | RC | 20,553 | 3, 6, 9, 12 yr | < 25 (38); 25–30 (44); > 30 (18) | Questionnaire | No association |
| Kessler [50] | 2007 | PC | 67 | 10 d, 3 mo | < 25 (16); 25–30 (54); > 30 (30) | WOMAC | No association |
| Moran [51] | 2005 | PC | 800 | 6, 18 mo | 28a (range, 14–49) | HHS | Worse pain |
BMI Body mass index, CC Case control, CI Confidence interval, HHS Harris Hip Score, HOOS Hip Disability and Osteoarthritis Outcome Score, NA Not available, OHS Oxford Hip Score, OR Odds ratio, PC Prospective cohort, PCS Pain catastrophizing scale, RC Retrospective cohort, SD Standard deviation, VAS Visual analog scale, VRS Verbal rating scale
aExpressed as mean BMI