Three-Dimensional Analysis of the First Metatarsal Bone in Minimally Invasive Distal Linear Metatarsal Osteotomy for Hallux Valgus.
3-dimensional analysis
computed tomography
hallux valgus
metatarsal osteotomy
Journal
Foot & ankle international
ISSN: 1944-7876
Titre abrégé: Foot Ankle Int
Pays: United States
ID NLM: 9433869
Informations de publication
Date de publication:
01 2020
01 2020
Historique:
pubmed:
20
9
2019
medline:
8
9
2020
entrez:
20
9
2019
Statut:
ppublish
Résumé
Modified Bösch osteotomy (distal linear metatarsal osteotomy [DLMO]) is one of the minimally invasive correctional surgeries for hallux valgus. The 3-dimensional correctional angles and distances of the first metatarsal bone in DLMO have not been clarified. The purpose of this study was to analyze the 3-dimensional postoperative morphological changes of the first metatarsal bone in DLMO. Twenty patients (30 feet) who underwent DLMO were enrolled. Preoperative plain radiographs and computed tomography (CT) scans of the feet were examined. Postoperative radiographs and CT scans were also obtained after bone union. The surface data of the pre- and postoperative first metatarsals were reconstructed from the CT data. The positions of the distal ends of the first metatarsals described with respect to the proximal ends were calculated using CT surface-matching technique. The distal end of the first metatarsal after DLMO was significantly supinated (10.2 ± 6.0 degrees, The 3-dimensional corrections of the first metatarsal bone after DLMO were evaluated. Pronation and abduction were successfully corrected. Furthermore, adduction correction might be an important factor affecting correction of pronation. Level IV, retrospective case series.
Sections du résumé
BACKGROUND
Modified Bösch osteotomy (distal linear metatarsal osteotomy [DLMO]) is one of the minimally invasive correctional surgeries for hallux valgus. The 3-dimensional correctional angles and distances of the first metatarsal bone in DLMO have not been clarified. The purpose of this study was to analyze the 3-dimensional postoperative morphological changes of the first metatarsal bone in DLMO.
METHODS
Twenty patients (30 feet) who underwent DLMO were enrolled. Preoperative plain radiographs and computed tomography (CT) scans of the feet were examined. Postoperative radiographs and CT scans were also obtained after bone union. The surface data of the pre- and postoperative first metatarsals were reconstructed from the CT data. The positions of the distal ends of the first metatarsals described with respect to the proximal ends were calculated using CT surface-matching technique.
RESULTS
The distal end of the first metatarsal after DLMO was significantly supinated (10.2 ± 6.0 degrees,
CONCLUSION
The 3-dimensional corrections of the first metatarsal bone after DLMO were evaluated. Pronation and abduction were successfully corrected. Furthermore, adduction correction might be an important factor affecting correction of pronation.
LEVEL OF EVIDENCE
Level IV, retrospective case series.
Identifiants
pubmed: 31535939
doi: 10.1177/1071100719875222
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM