First Metatarsal Bone: An Anatomic Study

ElSaid, Ahmed G.; Tisdel, Christopher L.; Donley, Brian G.; Sferra, James J.; Neth, Donald; Davis, Brian L.

doi:10.1177/107110070602701208

Cited by 16 publications

(10 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The central ridge covered almost the whole of the cartilage surface. DMAA was unnaturally large, measured by any definition and compared to anatomic studies [1,3,4]. The erosion site was rather common, as it took mostly plantar quadrant of the metatarsal head surface [3].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Bilateral deep chevron deformity of the first metatarsophalangeal joint – a case report

Kuik¹,

Łuczkiewicz²

2019

Chir. Narzadow Ruchu Ortop. Pol.

View full text Add to dashboard Cite

Most reports divide first metatarsophalangeal (MTP I) joint surface into round, square or chevron shaped. The angular deviation of join surface described as distal metatarsal articular surface (DMAA) is a common situation and is widely known parameter for evaluation of hallux valgus severity. We found no works considering deep chevron shape of metatarsal head together with large DMAA angle. We would like to present the case of a 50 years old female with rare bilateral deformity qualified for surgery because of hallux valgus.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Most of them divide anatomical patterns of metatarsal head into round (reffered also as "curved"), square and chevron shaped. The latter is also described as a square with a central ridge [1][2][3][4]. Chevron shape addresses two-surface metatarsal head pattern, usually with wide angle in horizontal plane.…”

Section: Discussionmentioning

confidence: 99%

Bilateral deep chevron deformity of the first metatarsophalangeal joint – a case report

Kuik¹,

Łuczkiewicz²

2019

Chir. Narzadow Ruchu Ortop. Pol.

View full text Add to dashboard Cite

show abstract

“…The shape of the head of the first metatarsal was classified into three types, according to several authors: round, flat, and with crest [ 8 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. The observation consisted of the two assessors measuring relevant measures of 103 randomly chosen feet radiographs, and then 1 week later re-measuring all radiographs without reference to previous results.…”

Section: Methodsmentioning

confidence: 99%

“…First metatarsal head shape has been routinely assessed by orthopedic surgeons radiographically, and has been addressed by as many as 24 authors, as well as in systematic reviews [ 7 ] to claim that shape is significant in the development of HV, and it has been classified as three types: round, square and crest [ 8 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ], with the crest type being the most stable to prevent the development of HV and the round shape contributing to the development of HV, and it is one of the factors in recurrence after hallux valgus surgery [ 11 , 14 , 15 , 17 , 18 , 19 , 21 , 22 , 23 , 28 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Radiographic Analysis on the Distortion of the Anatomy of First Metatarsal Head in Dorsoplantar Projection

Grande-del-Arco

Becerro-de-Bengoa-Vallejo

Palomo‐López

et al. 2020

Diagnostics

View full text Add to dashboard Cite

Background: The diagnostic of flat and crest-shaped of first metatarsal heads has been associated as an important risk factor for hallux deformities, such as hallux valgus and hallux rigidus. The rounded form of the first metatarsal head on the dorsoplantar radiograph of the foot has been believed to be associated with the development of hallux valgus. Purpose: The aim of this study was to clarify the effect of tube angulation on the distortion of first metatarsal head shape, and verify the real shape of the metatarsal head in anatomical dissection after an X-ray has been taken. Materials and Methods: In this prospective study at Universidad Complutense de Madrid, from December 2016 to June 2019, 103 feet from embalmed cadavers were included. We performed dorsoplantar radiograph tube angulation from 0° until 30° every 5° on all specimens; then, two observers verified the shape of the first metatarsal head in the radiographs and after its anatomic dissection. Kappa statistics and McNemar Bowker tests were used to assess and test for intra and interobserver agreement of metatarsal shape. Results: We calculated the intraobserver agreement, and the results showed that the first metatarsal head is distorted and crested only when the angle of the X-ray beam is at 20° of inclination (p < 0.001). The interobserver agreement showed good agreement at 0°, 5°, 10°, 20°, and 25° and was excellent at 30° (p < 0.001). Conclusion: All of the studies that we identified in the literature state that there are three types of shapes of the first metatarsal head and relate each type of head to the diagnosis of a foot pathology, such as hallux valgus or hallux rigidus. This study demonstrates that there is only the round-shaped form, and not three types of metatarsal head shape. Therefore, no diagnoses related to the shape of the first metatarsal head can be made.

show abstract

“…Occasionally, a double facet occurs when the dorsal and plantar facets are completely divided by the presence of a distinct ridge or a non-articular strip or cleft ( Figure 1B), which may occur with or without constriction of the medial border (Singh, 1960). In cases with a transverse ridge dividing the proximal articular facet of the first metatarsal, the resulting dorsal and plantar surfaces form two separate concavities (Singh, 1960), which are not oriented parallel to each other (ElSaid et al, 2006). Double facets at the hallucal cuneometatarsal joint may be noted in skeletal remains studied in both bioarchaeological (e.g.…”

Section: Introductionmentioning

confidence: 99%

Interpretation of variant morphological patterns in the hallucal cuneometatarsal joint

Burnett

Case

2014

View full text Add to dashboard Cite

First cuneometatarsal joints are normally characterized by a single articulating facet. In some cases, however, they may bear some degree of division into two, or even three, distinct facets. Typically, double facets at this joint are interpreted as evidence of partial or complete division of the medial cuneiform earlier in development, though evidence to support this interpretation is limited. The purpose of this study was to examine the relationship between double facets and bipartition by comparing the sex ratio in double-faceted medial cuneiforms from two Euro-American skeletal samples, with the unbalanced sex ratio found in cases of complete bipartition of the medial cuneiform. Upon examination, no statistically significant differences were found in double-facet frequency between females and males, and the sex ratio differed significantly from that seen in known cases of bipartite medial cuneiform. These results suggest that the existence of double facets distally on the medial cuneiform is likely not exclusively indicative of developmental bipartition, a conclusion also supported by reports of divided distal surfaces in non-bipartite medial cuneiforms in some prenatal specimens. Furthermore, medial cuneiforms bearing three facets distally to the first metatarsal sometimes occur, possibly more frequently in individuals of advanced age. Ultimately, understanding distal facet patterns on the medial cuneiform may hold significance for understanding joint mobility and susceptibility to hallux valgus deformity in hominins from both bioarchaeological and paleoanthropological perspectives.

show abstract

First Metatarsal Bone: An Anatomic Study

Abstract: Laterally deviated PMAA could predispose to a varus deformity of the first metatarsal.

Cited by 16 publications

References 9 publications

Bilateral deep chevron deformity of the first metatarsophalangeal joint – a case report

Bilateral deep chevron deformity of the first metatarsophalangeal joint – a case report

Radiographic Analysis on the Distortion of the Anatomy of First Metatarsal Head in Dorsoplantar Projection

Interpretation of variant morphological patterns in the hallucal cuneometatarsal joint

Contact Info

Product

Resources

About