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The Wisconsin Hand Experience 2016. CMC Pitfalls and Preferences. Greg Watchmaker, MD. Zion 2014. Pitfalls. Expectations. Expectations. Relieve pain 93% Improve strength 93% Restore basic tasks like opening a jar 93% Prevent condtion from worsening 95%. Expectations. Prevalence.
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The Wisconsin Hand Experience2016 CMC Pitfalls and Preferences Greg Watchmaker, MD Zion 2014
Expectations • Relieve pain 93% • Improve strength 93% • Restore basic tasks like opening a jar 93% • Prevent condtion from worsening 95%
Prevalence • Radiographic 6:1 female to male prevalence • 40% of women by 75 • Only 28% symptomatic Armstrong AL, Hunter JB, Davis TR.. J Hand Surg Br. 1994;19:340–341
Growth of Thumb’s Importance Bipedalism and club weilding associated with thumb development
Thumb Strength Age 0-5 Short web space, low muscle strength Age 6 – 12 Increasing muscle strength and thumb length Age >50 Back to being a toddler
Thumb Kinematics -Force increases exponentially from tip to base during pinch activities -120kg force at CMC joint during pinch
CMC- Ligaments 3 – 16 Ligaments Anterior Oblique Ligament? Dorsal Deltoid Ligaments
CMC- Treatment Options • Adaptive techniques • Neoprene/Custom Braces • Warmth • NSAIDs • Cortisone • Surgery
CMC Preferences Splinting • Neoprene prefabricated • Semi-rigid prefabricated • Custom thermal molded
Audience Preferences - Splinting • Neoprene prefabricated • Semi-rigid prefabricated • Custom thermal molded
Preferences- Splinting Randomized cross-over study Neoprene vs. custom thermal
Pitfalls - Injections Cortisone Culture expanded stem cells Hyaluronic acid Autologous fat
Pitfalls - Injections Cortisone vs. Placebo
Surgical Options • Mini TightRope • Hematoma Arthroplasty • Tendon Interposition • Joint or Hemi replacement • Synthentic Spacers • Arthroscopic Arthroplasties • Osteotomies
CMC Arthoplasty– Treatment - Trapezium Excision (1949) • Tendon Interposition (1970) • Ligament Reconstruction (1973) • Ligament Reconstruction and Trapeziectomy (1986) • Trapezium Excision (2007)
Interposition Material • Trapezium resection only (nothing) • Tendon Interposition (FCR, PL, APL) • Orthosphere • Artelon
Pitfalls - Implants Artelon Fabric 12 of 32 (37%) revised for pain Pyrocarbon Implant (20% at 2 yrs) Silastic Implant Orthosphere 5 of 6 revised for pain
Arthroscopic Arthroplasty • 26 patients with 20 month follow-up • Poly-L-lactic acid implant • Pain 6.61 VAS 6.03 • QuickDASH 56 54 • Pinch 3.7kg 2.2kg
Audience - Immobilization • Cast 4 weeks or more • Cast 2-4 weeks • Removable splint only • No splint
Pinning the Joint • Never Pin • Sometimes Pin • Always Pin
Therapy Visits Post-op • No Therapy • 1-4 visits • 5-8 visits • 9-12 visits • 13-16 visits • 17-20 visits • 21-24 visits • Never stop
Pitfalls - Ongoing Pain Incomplete bone resection Low-grade infection LABC and radial sensory nerve injury CRPS Scapho-trapezoidal arthrosis FCR tendinitis Adhesions
Take Home Messages More and more common Take time treating conservatively (adaptive devices, neoprene, injections) Any surgery with good technique is fine (with caveats)
The Wisconsin Hand Experience Murren 2015 CMC Pitfalls and Preferences Greg Watchmaker, MD