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When & How to Utilize Interventional Procedures Utility and Predictive Factors. N. Camden Kneeland, M.D., D.A.B.A. The Montana Center for Wellness & Pain Management Kalispell, MT. Disclosures . Research Stipend from St. Jude Medical. Objectives .
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When & How to Utilize Interventional ProceduresUtility and Predictive Factors N. Camden Kneeland, M.D., D.A.B.A. The Montana Center for Wellness & Pain Management Kalispell, MT
Disclosures • Research Stipend from St. Jude Medical
Objectives • Present evidence regarding the predictive value of psychosocial evaluation in chronic pain patients undergoing interventional procedures • Define the role of diagnostic and therapeutic interventional pain management procedures in an interdisciplinary pain management paradigm
Psychosocial Background • Biopsychosocial complexity of chronic pain cannot be underappreciated • 41% with Axis I disorder • 200-300% increased association with depression and anxiety • Cost of chronic pain treatment annually exceeds $600 Billion annually • Daubs, MD SPINE Volume 36, Number 21S, pp S96–S109
Fusion Versus Nonoperative Care for Chronic Low Back Pain • Systematic review of randomized controlled trials • 18 Studies met inclusion criteria for the period 1990-2010 • Beck Depression Inventory, Fear Avoidance Belief Questionaire, Zung Depression Scale, Spielberger Trait Anxiety Inventory, and Distress and Risk Assessment Method • Patients with a personality disorder appear to respond more favorably to conservative management and those without a personality disorder more favorably to fusion • Daubs, MD SPINE Volume 36, Number 21S, pp S96–S109 2011
Can theOutcome of Spinal Cord Stimulation in Chronic Complex Regional Pain Syndrome Type I Patients BePredicted by Catastrophizing Thoughts? • 32 Patients • Prospective Cohort study • Dutch version of the Pain Catastrophizing Scale • Efficacy of SCS was not predicted by pain catastrophizing • Lame´ et al, Anesthesia and Analgesia 109(2):592-9 2009
Psychological Risk Factors for Poor Outcome of SpineSurgery and Spinal Cord Stimulator Implant: A Review ofthe Literature and Their Assessment With the MMPI-2-RF • 197 patients • Prospective cohort study • Spine surgery and spinal cord stimulation • No significant difference between groups • Depression, anxiety, pain sensitivity, and anger were associated with poor outcomes • Block, AR. Psychological Risk Factors for Poor Outcome of Spine Surgery and Spinal Cord Stimulator Implant: A Review of the Literature and Their Assessment With the MMPI-2-RF, The Clinical Neuropsychologist, 27:1, 81-107 2013
The Impact of Psychological Factors on Outcomes for Spinal Cord Stimulation: An Analysis with Long-term Follow-up • Retrospective Analysis • 60 patients • Hospital Anxiety and Depression Test and Pain Disability Index • No significant difference in PDI scores with successful and unsuccessful SCS implants • No significant difference in HADS scores with successful and unsuccessful SCS implants • Wolter et al, Pain Physician 16(3) 265-75 2013
Prognostic Value of Psychological Testing in Patients Undergoing Spinal Cord Stimulation: A Prospective Study • Prospective study • MMPI • 58 patients • Some statistically significant association between high indices of depression and trial period, but no association with permanent implant • North R,Neurosurgery Issue: Volume 39(2), pp 301-311 1996
Psychology and the Diagnosis of Facet Joint Pain • Retrospective Analysis • 438 patients • Survey based on DSM IV criteria for depression, anxiety, and somatization disorder • No statistically significant influence of depression, anxiety, somatization disorder, or a combination of the above on the prevalence of facet joint pain • Response to comparative medial branch blocks with different anesthetics • Manchikanti et al, Pain Physician, 11(2) 145-60 2008
Summary • Limited Data for Screening outside SCS • Mixed Results • Common Sense • When in doubt, evaluate, but don’t sacrifice patient care • Comprehensive Approach
The Role of Interventions • Diagnostic Value • Physician and Patient Education • Better Treatment Plans • Variety of Pain Generators = Variety of Interventions • Breaking the Cycle of Pain • Improving Function
Interventional Pearls • Radicular Pain vs. Axial vs. Diffuse Pain • Shotgun Approach • Safety of Epidural Steroids • Adhesive arachnoiditis <1000 cases in 2002* • Myofascial/Musculoskeletal Pain • Interspinous Ligment *Rice M, et al, BJA 92:1 109-120
Interventional Pearls • Facet Pain • Second most common source of axial spine pain
Interventional Pearls • Lumbar Myofascial Pain • Iliopsoas & Quadratus Lumborum
Interventional Pearls • Sacroiliac Joint Pain • Lateral Branch Blocks • Cooled RF Ablation
Summary • Use interventional approach diagnostically and to break pain cycles • Long term analgesia and cure is possible • Informed consent is critical