Acute Pain 

New Persistent Opioid Use After Minor and Major Surgical Procedures in US Adults
Chad M. Brummett, MD; Jennifer F. Waljee, MD, MPH, MS; Jenna Goesling, PhD; Stephanie Moser, PhD; Paul Lin, MS; Michael J. Englesbe, MD; Amy S. B. Bohnert, PhD, MHS; Sachin Kheterpal, MD, MBA; Brahmajee K. Nallamothu, MD, MPH

Risks of Developing Persistent Opioid Use After Major Surgery
Neilesh Soneji, MD; Hance A. Clarke, MD, PhD, FRCPC; Dennis T. Ko, MD, MSc; Duminda N. Wijeysundera, MD, PhD

Regional Anesthesia 

The Risk of Falls After Total Knee Arthroplasty with the Use of a Femoral Nerve Block Versus an Adductor Canal Block: A Double-Blinded Randomized Controlled Study 
Elkassabany, Nabil M. MD, MSCE; Antosh, Sean MD; Ahmed, Moustafa MD; Nelson, Charles MD; Israelite, Craig MD; Badiola, Ignacio MD; Cai, Lu F. MD; Williams, Rebekah BS; Hughes, Christopher MPT; Mariano, Edward R. MD, MAS; Liu, Jiabin MD, PhD 

Chronic Pain 

Effect of Opioid vs Nonopioid Medications on Pain-Related Function in Patients With Chronic Back Pain or Hip or Knee Osteoarthritis Pain
Erin E. Krebs, MD, MPH; Amy Gravely, MA; Sean Nugent, BA; Agnes C. Jensen, MPH; Beth DeRonne, PharmD; Elizabeth S. Goldsmith, MD, MS; Kurt Kroenke, MD; Matthew J. Bair; Siamak Noorbaloochi, PhD