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Research ArticlePractice

Optimal pain relief for pediatric MSK injury

Christina Korownyk, Jennifer Young and G. Michael Allan
Canadian Family Physician June 2015, 61 (6) e276;
Christina Korownyk
Associate Professor in the Department of Family Medicine at the University of Alberta in Edmonton.
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Jennifer Young
Family physician practising in Collingwood, Ont.
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G. Michael Allan
Professor and Director of Evidence-Based Medicine in the Department of Family Medicine at the University of Alberta.
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Clinical question

In children with acute musculoskeletal (MSK) injuries, what is the optimal approach to pain management?

Bottom line

Evidence suggests that ibuprofen provides better single-agent relief than acetaminophen or codeine, and is at least equivalent to both acetaminophen with codeine and morphine for acute injury pain, with fewer adverse events.

Evidence

Single-agent comparisons:

  • Ibuprofen versus acetaminophen versus codeine: RCT1 of 336 children with MSK injuries (54% fractures).

    • -At 60 minutes on a 100-mm pain scale, ibuprofen led to

      • —greater mean reduction (−24 mm) versus acetaminophen (−12 mm) or codeine (−11 mm).

      • —more patients achieving adequate analgesia (< 30 mm) versus acetaminophen (number needed to treat [NNT] = 7) or codeine (NNT = 9).

  • Morphine versus ibuprofen: RCT2 of 134 children with uncomplicated extremity fractures given ibuprofen or morphine, followed for 24 hours.

    • -No difference in pain score at any time point.

    • -Less nausea with ibuprofen (NNT = 5).

Combination comparisons: 2 RCTs with arm fracture or MSK limb trauma.

  • Acetaminophen and codeine versus ibuprofen: 336 children followed for 3 days.3

    • -No difference in mean pain scores.

    • -Ibuprofen resulted in substantially less pain-related functional limitation.

    • -Fewer adverse events with ibuprofen (NNT = 5).

  • Ibuprofen and codeine versus ibuprofen: 81 children followed for 120 minutes.4

    • -No difference in pain score at any of 4 time points.

Four smaller (underpowered) RCTs5–8 with 60 to 72 patients found no difference in any comparison of ibuprofen, acetaminophen, oxycodone, or acetaminophen-codeine.

Limitations include small sample sizes,2,4–8 high dropout rates,2 low pain scores at study entry (making it harder to show a difference),2 and dosing of morphine (every 6 hours).4

Context

  • In 1 systematic review9 of ibuprofen versus acetaminophen for any pediatric pain, ibuprofen provided mildly better pain control at 2 hours (standardized mean difference 0.28; 95% CI 0.10 to 0.46).

  • Study doses1–4 were 10 mg/kg of ibuprofen (maximum 400 to 600 mg), 15 mg/kg of acetaminophen (maximum 650 mg), 1 mg/kg of codeine (maximum 60 mg), and 0.5 mg/kg of morphine (maximum 10 mg).

  • Nonsteroidal anti-inflammatory drugs do not appear to affect fracture healing.10

Implementation

Pediatric pain has been poorly controlled in the emergency department.11 This can be addressed by incorporating ibuprofen in medical directives. In primary care, ibuprofen should be the first-line treatment for management of acute MSK pain. Further, up to one-third of children do not metabolize codeine.12 Irrespective of codeine’s lack of comparative efficacy, Health Canada warned in 2013 that codeine can be associated with serious side effects in ultra-rapid metabolizers and thus should not be used in children younger than 12.13 In practices and health facilities, electronic medical records could incorporate this warning as a prescribing alert.

Notes

Tools for Practice articles in Canadian Family Physician (CFP) are adapted from articles published on the Alberta College of Family Physicians (ACFP) website, summarizing medical evidence with a focus on topical issues and practice-modifying information. The ACFP summaries and the series in CFP are coordinated by Dr G. Michael Allan, and the summaries are co-authored by at least 1 practising family physician and are peer reviewed. Feedback is welcome and can be sent to toolsforpractice{at}cfpc.ca. Archived articles are available on the ACFP website: www.acfp.ca.

Footnotes

  • The opinions expressed in Tools for Practice articles are those of the authors and do not necessarily mirror the perspective and policy of the Alberta College of Family Physicians.

  • Copyright© the College of Family Physicians of Canada

References

  1. 1.↵
    1. Clark E,
    2. Plint AC,
    3. Correll R,
    4. Gaboury I,
    5. Passi B
    . A randomized, controlled trial of acetaminophen, ibuprofen, and codeine for acute pain relief in children with musculoskeletal trauma. Pediatrics 2007;119(3):460-7.
    OpenUrlAbstract/FREE Full Text
  2. 2.↵
    1. Poonai N,
    2. Bhullar G,
    3. Lin K,
    4. Papini A,
    5. Mainprize D,
    6. Howard J,
    7. et al
    . Oral administration of morphine versus ibuprofen to manage postfracture pain in children: a randomized trial. CMAJ 2014;186(18):1358-63.
    OpenUrlAbstract/FREE Full Text
  3. 3.↵
    1. Drendel AL,
    2. Gorelick MH,
    3. Weisman SJ,
    4. Lyon R,
    5. Brousseau DC,
    6. Kim MK
    . A randomized clinical trial of ibuprofen versus acetaminophen with codeine for acute pediatric arm fracture pain. Ann Emerg Med 2009;54(4):553-60.
    OpenUrlCrossRefPubMed
  4. 4.↵
    1. Le May S,
    2. Gouin S,
    3. Fortin C,
    4. Messier A,
    5. Robert MA,
    6. Julien M
    . Efficacy of an ibuprofen/codeine combination for pain management in children presenting to the emergency department with a limb injury: a pilot study. J Emerg Med 2013;44(2):536-42.
    OpenUrlPubMed
  5. 5.↵
    1. Koller DM,
    2. Myers AB,
    3. Lorenz D,
    4. Godambe SA
    . Effectiveness of oxycodone, ibuprofen, or the combination in the initial management of orthopedic injury-related pain in children. Pediatr Emerg Care 2007;23(9):627-33.
    OpenUrlCrossRefPubMed
  6. 6.
    1. Shepherd M,
    2. Aickin R
    . Paracetamol versus ibuprofen: a randomized controlled trial of outpatient analgesia efficacy for paediatric acute limb fractures. Emerg Med Australas 2009;21(6):484-90.
    OpenUrlCrossRefPubMed
  7. 7.
    1. Friday JH,
    2. Kanegaye JT,
    3. McCaslin I,
    4. Zheng A,
    5. Harley JR
    . Ibuprofen provides analgesia equivalent to acetaminophen-codeine in the treatment of acute pain in children with extremity injuries: a randomized clinical trial. Acad Emerg Med 2009;16(8):711-6.
    OpenUrlCrossRefPubMed
  8. 8.↵
    1. Bondarsky EE,
    2. Domingo AT,
    3. Matuza NM,
    4. Taylor MB,
    5. Thode HC Jr.,
    6. Singer AJ
    . Ibuprofen vs acetaminophen vs their combination in the relief of musculoskeletal pain in the ED: a randomized, controlled trial. Am J Emerg Med 2013;31:1357-60.
    OpenUrlPubMed
  9. 9.↵
    1. Pierce CA,
    2. Voss B
    . Efficacy and safety of ibuprofen and acetaminophen in children and adults: a meta-analysis and qualitative review. Ann Pharmacother 2010;44(3):489-506.
    OpenUrlAbstract/FREE Full Text
  10. 10.↵
    1. Taylor IC,
    2. Lindblad AJ,
    3. Kolber MR
    . Fracture healing and NSAIDs. Can Fam Physician 2014;60:817. (Eng), e439–40 (Fr).
    OpenUrlFREE Full Text
  11. 11.↵
    1. Petrack EM,
    2. Christopher NC,
    3. Kriwinsky J
    . Pain management in the emergency department: patterns of analgesic utilization. Pediatrics 1997;99(5):711-4.
    OpenUrlAbstract/FREE Full Text
  12. 12.↵
    1. Williams DG,
    2. Patel A,
    3. Howard RF
    . Pharmacogenetics of codeine metabolism in an urban population of children and its implications for analgesic reliability. Br J Anaesth 2002;89(6):839-45.
    OpenUrlAbstract/FREE Full Text
  13. 13.↵
    1. Health Canada
    . Health Canada’s review recommends codeine only be used in patients aged 12 and over. Ottawa, ON: Health Canada; 2013.
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Canadian Family Physician: 61 (6)
Canadian Family Physician
Vol. 61, Issue 6
1 Jun 2015
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Optimal pain relief for pediatric MSK injury
Christina Korownyk, Jennifer Young, G. Michael Allan
Canadian Family Physician Jun 2015, 61 (6) e276;

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Christina Korownyk, Jennifer Young, G. Michael Allan
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