The Chevron Bunionectomy for Moderate to Severe Deformity: Effects of Varying Procedural Factors in Hallux Valgus Correction

Harrison, Hunter Reed (2019) The Chevron Bunionectomy for Moderate to Severe Deformity: Effects of Varying Procedural Factors in Hallux Valgus Correction. Undergraduate thesis, under the direction of Matthew Morrison from Electrical Engineering, The University of Mississippi.

[img]
Preview
Text
THE CHEVRON BUNIONECTOMY FOR MODERATE TO SEVERE DEFORMITY EFFECTS OF VARYING PROCEDURAL FACTORS IN HALLUX VALGUS CORRECTION.pdf

Download (2MB) | Preview

Abstract

With growing popularity of minimally invasive surgery, the Chevron bunionectomy has been investigated for use in moderate to severe hallux valgus. This study investigates procedural components of lateral release, fixation, and 2nd digit procedures to evaluate effects on outcome. 109 out of 325 patients of a distal Chevron osteotomy with a minimum preoperative IMA of 15° completed the phone survey rating satisfaction and pain levels. Patients were contacted an average of 5.2 years postoperatively. 83% of patients reported being extremely to very satisfied with their outcome. Only 9 patients complained of current foot pain greater than or equal to 5 on a scale from 0 to 10 (with 0 being no pain). Intermetatarsal angle improved by an average of 7.2 degrees from 17.0 degrees preoperatively to 9.2 degrees postoperatively. Hallux valgus angle improved on average 20.5 degrees from 33.9 degrees preoperatively to 13.4 degrees postoperatively. Potential effects of risk factors on patient outcomes were also studied. No impacts of health history or 2nd digit procedures were found on patient satisfaction, pain levels, or radiographical improvement. However, surgeries including a lateral release were found to significantly improve IMA correction (p<.01). No preference radiographically was discovered between open lateral release (OLR) and transarticular release (TAC). A higher rate of patients reported their satisfaction level of none to moderate for TAC (33%) than those without a release (17%) or OLR (12%). All measures comparing fixation methods proved unremarkable excluding a higher occurrence of K wire removal (40%) versus removal for bioabsorbable pins (10%). No cases of deep vein thrombosis or avascular necrosis were reported. Further studies investigating the differences between release types and frequency of implant removal are recommended.

Item Type: Thesis (Undergraduate)
Creators: Harrison, Hunter Reed
Student's Degree Program(s): B.E. in Engineering
Thesis Advisor: Matthew Morrison
Thesis Advisor's Department: Electrical Engineering
Institution: The University of Mississippi
Subjects: R Medicine > RD Surgery
Depositing User: Jason Ritchie
Date Deposited: 12 Jul 2019 15:13
Last Modified: 12 Jul 2019 15:13
URI: http://thesis.honors.olemiss.edu/id/eprint/1614

Actions (login required)

View Item View Item