Coronal Plane Obliquity of the Opening Wedge Osteotomy and Its Effect on Opening Gap Distance

2012 ◽  
Vol 11 (4) ◽  
pp. 201-205
Author(s):  
Ryan Shulman ◽  
Eric Chai
Keyword(s):  
Coronal Plane ◽  
Wedge Osteotomy ◽  
Opening Wedge

scholarly journals Opening wedge osteotomy for malunion of the distal radius with neuropathy:13 cases followed for 6 (1-11) years

1994 ◽  
Vol 65 (2) ◽  
pp. 207-208 ◽  
Author(s):  
Oskar Kwasny ◽  
Martin Fuchs ◽  
Rudolf Schabus
Keyword(s):  
Distal Radius ◽  
Wedge Osteotomy ◽  
Opening Wedge

Outcomes of Opening Wedge Osteotomy to Correct Angular Deformity in Clinodactyly

2014 ◽  
Vol 39 (9) ◽  
pp. e18-e19
Author(s):  
Samantha L. Piper ◽  
Charles A. Goldfarb ◽  
Lindley Wall
Keyword(s):  
Wedge Osteotomy ◽  
Angular Deformity ◽  
Opening Wedge

Oblique Opening Wedge Osteotomy for Distal Tibial Varus Secondary to Physeal Arrest

2021 ◽  
pp. 107110072110413
Author(s):  
Stewart G. Morrison ◽  
Andrew G. Georgiadis ◽  
Mark T. Dahl
Keyword(s):  
Wedge Osteotomy ◽  
Opening Wedge

The Proximal Opening Wedge Osteotomy

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Troy S. Watson ◽  
Mark S. Hsiao ◽  
Chris Harasym ◽  
John P. Walsh
Keyword(s):  
Wedge Osteotomy ◽  
Opening Wedge

A Simple Method for Fixation of Proximal Opening-Wedge Osteotomy of the First Metatarsal for Correction of Hallux Valgus

Orthopedics ◽  
2016 ◽  
Vol 39 (6) ◽  
pp. e1213-e1217 ◽  
Author(s):  
A. Erdem Bagatur ◽  
Mehmet Albayrak ◽  
Yunus Emre Akman ◽  
Merter Yalcinkaya ◽  
Utku Erdem Ozer ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Wedge Osteotomy ◽  
Opening Wedge ◽  
Simple Method ◽  
First Metatarsal

scholarly journals A protective hinge wire, intersecting the osteotomy plane, can reduce the occurrence of perioperative hinge fractures in medial opening wedge osteotomy

2019 ◽  
Vol 28 (10) ◽  
pp. 3173-3182 ◽  
Author(s):  
Firat Gulagaci ◽  
Christophe Jacquet ◽  
Matthieu Ehlinger ◽  
Akash Sharma ◽  
Kristian Kley ◽  
...  
Keyword(s):  
Wedge Osteotomy ◽  
Opening Wedge ◽  
Osteotomy Plane

scholarly journals Peak Contact Stress of TMT-1 Joint after Sequential Correction of Hallux Valgus Using a Proximal Opening Wedge Metatarsal Osteotomy (PMO) and Distal Soft Tissue Procedure

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0030
Author(s):  
Jonathan C. Kraus ◽  
Michael Ziegele ◽  
Mei Wang; Brian C. Law ◽  
Glenn G. Shi
Keyword(s):  
Soft Tissue ◽  
Hallux Valgus ◽  
Contact Force ◽  
Contact Stress ◽  
Soft Tissue Release ◽  
Wedge Osteotomy ◽  
Metatarsal Osteotomy ◽  
Opening Wedge ◽  
Joint Contact ◽  
The Mean

Category: Bunion; Midfoot/Forefoot Introduction/Purpose: The proximal opening wedge metatarsal osteotomy (PMO) of the first metatarsal is a common procedure for the surgical treatment of moderate to severe hallux valgus. Although with a long track record of success, limited work has been dedicated to this procedures effect on the first tarsometatarsal (TMT-1) joint. The purpose of this study is to evaluate the changes in TMT-1 joint contact stress in the diseased and corrected state following an opening wedge osteotomy of the proximal metatarsal. In addition, the effect of a distal soft tissue release (DSTR) was evaluated as it related to both radiographic correction and TMT-1 joint contact stress. Methods: Seven fresh-frozen cadaveric below knee specimens (mean age: 69yrs) with hallux valgus deformities (mean HVA: 31.7+-12.0degs) were obtained for the study. The specimen was loaded up to 400N on an MTS servo hydraulic load frame with the tibia at 90-degree to the neutrally position foot. Joint contact characteristics at TMT-1 joint were measured with a Tekscan pressure sensor (Model6900, 1100psi). A standard proximal metatarsal osteotomy was performed. Various sized metal wedges (3, 5, 7 mm) with locking plates and screws were inserted in the osteotomy for correction. Following initial tests, a complete distal soft tissue release (DSTR) was performed and the specimens were retested. Additionally, dorsoplantar weight bearing (400N) radiograph was obtained for each condition to measure intermetatarsal (IMA) and hallux valgus (HVA) angles. The contact force, area, and peak contact stress were compared among groups using ANOVA and post-hoc multiple comparisons over the untreated (Dunnett test, p<0.05). Results: The mean HVA decreased with wedge size and DSTR, reached to significant level with 7mm+DSTR (24.1 degs). The mean contact force was 39.7+-32.6 N for untreated specimens. This increased sequentially with opening wedge size and reached statistical significance 7mm opening-wedge (119.6+-53.8 N, p=0.03) and 7mm-wedge+DSTR (116.7+-58.3 N, p=0.04). The peak contact stress followed a similar trend (Figure 1). The mean peak contact stress was 2.3+-1.5 MPa for the untreated specimens and increased incrementally with wedge size to 5.3+-2.6 MPa for 7mm-wedge only (p=0.03) and 5.2+-2.1 MPa for 7mm- wedge+DSTR (p=0.04). Contact area increased with corrections, but none reached significance. Conclusion: The results from this study demonstrate that with sequentially increasing opening wedge size, loading properties through the TMT-1 joint increase. Prior work has demonstrated that joint stresses of over 4.7 MPa can be chondrotoxic, a value which was surpassed with our peak contact stress with the 7mm wedge. This has significant implications for the long-term health of the TMT-1 joint following PMO, potentially predisposing patients to arthritic joint changes. The optimal degree of correction with PMO to limit chondrotoxicity is not known at this time, and is a direction for future work.

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