title: Case Series Using a Novel Implant and Accelerated Rehabilitation for Patients Undergoing an Isolated Talonavicular Arthrodesis.
abstract: Talonavicular (TN) arthrodeses for TN arthritis have a high rate of nonunions for an essential hindfoot joint. In this case series, 12 patients underwent an isolated TN arthrodesis using a novel implant (IO FiX) by a single surgeon with a minimum 1-year follow-up (30.1 ± 14.7 months; mean ± SD). All patients (62 ± 12 years) underwent an aggressive rehabilitation protocol given the strength and compression of the implant. There were no nonunions, nor were there any patients lost to follow-up. Time to radiographic union was 9.6 ± 1.4 weeks. The Visual Analog Scale pain level decreased from 7.3 ± 0.9 preoperatively to 2.1 ± 0.7 postoperatively (P < .001). The Short-Form-12 physical component improved from 27.9 ± 4.2 preoperatively to 42.2 ± 3.5 postoperatively (P < 0.001), while the Short-Form-12 mental component did not change from 50.8 ± 6.9 preoperatively to 54.4 ± 3.8 postoperatively (P > .05). Use of the novel fixation device for TN arthrodesis by a single surgeon with an accelerated rehabilitation protocol significantly decreased patients' pain and improved their physical functional outcomes (P < .001). The IO FiX implant can potentially improve TN arthrodesis fusion rates and surgical outcomes.
  
  
  METHODS
  Therapeutic, Level IV: Case series.
authors.affiliation: Harbor-UCLA Medical Center, Department of Orthopaedic Surgery, Torrance, California (SJS, LM, TGH)Congress Medical Associates, Pasadena, California (TGH) sshymon1@gmail.com.
authors.forename: Stephen Joseph
authors.initials: SJ
authors.lastname: Shymon
authors.affiliation: Harbor-UCLA Medical Center, Department of Orthopaedic Surgery, Torrance, California (SJS, LM, TGH)Congress Medical Associates, Pasadena, California (TGH).
authors.forename: Lewis
authors.initials: L
authors.lastname: Moss
authors.affiliation: Harbor-UCLA Medical Center, Department of Orthopaedic Surgery, Torrance, California (SJS, LM, TGH)Congress Medical Associates, Pasadena, California (TGH).
authors.forename: Thomas Gregory
authors.initials: TG
authors.lastname: Harris
mesh_terms: D001168:Arthritis / Q000628:therapy*; D001174:Arthrodesis / Q000295:instrumentation*; D005260:Female; D061826:Foot Orthoses; D006801:Humans; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D026741:Physical Therapy Modalities; D011182:Postoperative Care; D013628:Talus / Q000601:surgery; D013639:Tarsal Bones / Q000601:surgery; D013640:Tarsal Joints / Q000601:surgery*; D064232:Visual Analog Scale
keywords: SF-12; fusion; nonunion; talonavicular arthrodesis; visual analog scale