Assessing Pain and Functional Outcomes of Percutaneous Stabilization of Metastatic Pelvic Lesions via Photodynamic Nails: A Bi-Institutional Investigation of Orthopaedic Outcomes.
Santiago A Lozano-Calderon, Marilee J Clunk, Marcos R Gonzalez, Alisha Sodhi, Ryan K Krueger, Allison C Gruender, David D Greenberg
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Abstract
Background: Minimally invasive surgical interventions for metastatic invasion of the pelvis have become more prevalent and varied. Our group hypothesized that the use of percutaneous photodynamic nails (PDNs) would result in decreased pain, improved functional outcomes and level of ambulation, and decreased use of opioid pain medication.
Methods: We performed a retrospective chart review of patients with metastatic pelvic bone disease undergoing stabilization with PDNs (IlluminOss Medical) at 2 institutions. Functional outcome measures assessed include the Combined Pain and Ambulatory Function (CPAF), Patient-Reported Outcomes Measurement Information System (PROMIS) Physical Function, and PROMIS Global Health-Physical. Pain was assessed using a visual analog scale (VAS). Outcomes were assessed preoperatively and at 6 weeks, 3 months, 6 months, and 1 year following surgery.
Results: A total of 39 patients treated with PDNs were included. No cases of surgical site infection or implant failure were identified. The median pain VAS score decreased from 8 preoperatively to 0 at the 6-week time point (p < 0.0001). The median CPAF score improved from 5.5 points preoperatively to 7 points at the 3-month mark (p = 0.0132). A significant improvement in physical function was seen at 6 months in the PROMIS Physical Function (p = 0.02) and at both 6 months (p = 0.01) and 1 year (p < 0.01) for the PROMIS Global Health-Physical. The rate of patients prescribed opioid analgesia dropped from 100% preoperatively to 20% at 6 months following surgery (p < 0.001). By 6 weeks, all patients were fully weight-bearing and able to walk independently with or without assistive devices.
Conclusions: Percutaneous stabilization of metastatic periacetabular defects using PDNs is a safe and effective palliative procedure that has been shown to improve patient mobility and provide early pain relief.
Level of evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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