Challenges of perioperative pain control in opioid use disorder patients following intramedullary nail fixation.

BACKGROUND: Outcomes of patients with opioid use disorder undergoing elective procedures have been well studied, but research is lacking in the orthopaedic trauma population. AIM: The aim was to compare perioperative pain and morphine equivalents required by patients with versus without opioid use disorder following intramedullary nail fixation of femoral or tibial fractures. METHODS: We conducted a retrospective review of all patients with isolated femoral or tibial diaphyseal fractures treated with intramedullary nail fixation. Outcomes were compared between patients with diagnosed opioid use disorder and controls without, including daily morphine equivalents and patient-reported pain scores. RESULTS: Patients with opioid use disorder (n = 42) required greater morphine equivalents and reported higher pain than controls (n = 42) at all time points but did not differ in change of morphine equivalents over the perioperative period. CONCLUSION: This highlights the challenge of perioperative pain control in this population and need for improved specific pain management protocols.

Additive Manufacturing: The Next Generation of Scapholunate Ligament Reconstruction.

Background Ligament reconstruction, as a surgical method used to stabilize joints, requires significant strength and tissue anchoring to restore function. Historically, reconstructive materials have been fraught with problems from an inability to withstand normal physiological loads to difficulties in fabricating the complex organization structure of native tissue at the ligament-to-bone interface. In combination, these factors have prevented the successful realization of nonautograft reconstruction. Methods A review of recent improvements in additive manufacturing techniques and biomaterials highlight possible options for ligament replacement. Description of Technique In combination, three dimensional-printing and electrospinning have begun to provide for nonautograft options that can meet the physiological load and architectures of native tissues; however, a combination of manufacturing methods is needed to allow for bone-ligament enthesis. Hybrid biofabrication of bone-ligament tissue scaffolds, through the simultaneous deposition of disparate materials, offer significant advantages over fused manufacturing methods which lack efficient integration between bone and ligament materials. Results In this review, we discuss the important chemical and biological properties of ligament enthesis and describe recent advancements in additive manufacturing to meet mechanical and biological requirements for a successful bone-ligament-bone interface. Conclusions With continued advancement of additive manufacturing technologies and improved biomaterial properties, tissue engineered bone-ligament scaffolds may soon enter the clinical realm.