Primary ArthroplastyCannabis Use Does Not Affect Outcomes After Total Knee Arthroplasty
Section snippets
Methods
This study was approved by our institutional review board prior to initiation. The study period was from January 2014 to February 2018. The commercial sale of cannabis to the general public in the authors’ state was initiated on January 1, 2014. We utilized our institution’s longitudinally maintained TJA database to identify all patients who underwent unilateral primary TKA with a minimum 1-year follow-up duration. We retrospectively evaluated outpatient office charts for self-reported use of
Results
The mean age of the cannabis group was 61.0 ± 7.0 years, BMI was 27.1 ± 4.0, and the gender comparison was 48 males (67.6%) to 23 females (32.4%). This group was matched to a control group with age ±3 years, BMI ±3, and same gender. The mean length of stay was 46.9 ± 15.7 (users) vs 49.3 ± 20.4 (nonuser) hours (P = .464). In-hospital total morphine equivalents did not differ between the 2 groups (user = 137 ± 104 mg, nonuser = 146 ± 117 mg, P = .634). Postoperative ROM did not differ between
Discussion
Currently, there is little evidence to support the routine use of cannabis for medicinal purposes in patients undergoing elective TJA. Despite this, it appears that more patients undergoing TJA may be using, or reporting use for, both medicinal and/or recreational purposes since its legalization [7]. The primary aim of this study is to determine if cannabis use had clinical implications (ie, complications and outcomes) in patients undergoing primary unilateral TKA. Our results suggest that
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Cited by (0)
None of the authors have received funding for this research study and there were no individual funds received by any of the authors personally.
Each author certifies that he or she has no commercial associations (eg, consultancies, stock ownership, equity interest, patent/licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article.
Ethical Review Committee Statement: Our study involves human data and we have ethical board approval for our study.
Statement of the Location: Date collected for the use of this study was done at Colorado Joint Replacement.
One or more of the authors of this paper have disclosed potential or pertinent conflicts of interest, which may include receipt of payment, either direct or indirect, institutional support, or association with an entity in the biomedical field which may be perceived to have potential conflict of interest with this work. For full disclosure statements refer to https://doi.org/10.1016/j.arth.2019.04.015.