Treatment of Brachymetatarsia Involving the Great Toe

What's the evidence on surgical treatment for congenital brachymetatarsia: A systematic review and meta-analysis

Purpose

Brachymetatarsia is marked by the shortened length of one or more metatarsal bones. Several operative options have been suggested without demonstrating the superiority of one treatment over another. This study aims to assess the main available treatment, bone lengthening achieved, clinical outcomes, and complications pertaining to congenital brachymetatarsia interventions.

Methods

A literature search of PubMed, Embase, Scopus, and Cochrane databases was performed according to PRISMA guidelines.

Result

After the screening process, 13 articles were included in the review. Brachymetatarsia mainly occurs in females at a ratio of 14.8:1, and bilateral involvement in 25.8 % of cases. The fourth metatarsal is most affected, followed by the first metatarsal. The main surgical procedures are one-stage approach which results in limited length gain but fewer complications, and gradual lengthening which achieves greater length but has a higher complication rate, including metatarsophalangeal or interphalangeal subluxation, fractures, and infections. The first metatarsal reported better values concerning lengthening rate and healing index compared to fourth metatarsal, while no differences were observed in distraction rates or clinical outcomes. More complications, such as stiffness, fractures, and cavus foot were associated with first metatarsal lengthening.

Conclusions

It is not possible to identify a gold standard technique for addressing this condition. The two predominant surgical techniques bear advantages and drawbacks. A judicious case-by-case assessment is mandatory to determine the optimal surgical approach. Exploring the combination of techniques could be promise in mitigating the limitations associated with the main two methods and achieving better forefoot balance.

Level of evidence

Level II, systematic review.

Brachymetacarpia and brachymetatarsia: do we need to operate?

Brachymetacarpia and brachymetatarsia are rare congenital presentations denoted by shortening of metacarpals and metatarsals respectively, in which the deformity usually presents around childhood/early adolescence.

The aetiology is usually congenital besides several other syndromic or endocrinologic associations.

Cosmetic issues such as absence of a normal-looking knuckle while making a fist or disruption of finger-tip curvature besides functional issues are the main indications for surgical intervention in brachymetacarpia.

In the foot, apart from cosmetic issues, pain due to transfer metatarsalgia as well as callosities along with toe deformities which lead to difficulty of using footwear are the main indications for intervention.

Lengthening of the affected bone, either acute with grafting or gradual, is the mainstay of treatment. Gradual lengthening can be either single-stage as in callotasis, or two-stage where the primary procedure is followed by bone grafting after the length has been achieved.

Adolescence, specifically between 12 and 15 years, is the preferred period for surgical intervention in these cases.

Cite this article: EFORT Open Rev 2021;6:15-23. DOI: 10.1302/2058-5241.6.200087

Forefoot malformations, deformities and other congenital defects in children

Congenital pathologies of the forefoot encompass two broad entities with vastly different treatments and prognosis: malformations, which occur during the embryonic period and cause anatomical defects, and deformations, which occur during the fetal period on a foot that is configured normally. These deformities are more easily cured when they occur later during the fetal period. When the anomaly is bilateral, a genetic origin must be considered. There are two main entities under the term "deformity": metatarsus adductus and skewfoot (aka "Z"-foot or serpentine foot). Within malformations are brachydactyly (transverse defects), longitudinal defects, syndactyly, polydactyly, clinodactyly and macrodactyly. Among other forefoot abnormalities are hallux valgus, which rarely presents in congenital form, and for which conservative treatment is sometimes sufficient. Also in this group are sequelae of amniotic band constriction, forefoot anomalies secondary to the treatment of congenital pathologies (talipes equinovarus and congenital vertical talus) and nail-related pathologies (ingrown toe nail and incorrect nail position).

A rare case of isolated congenital unilateral brachymetatarsia presenting in a young adult male

Congenital brachymetatarsia is a rare skeletal anomaly which is characterized by the abnormal length reduction of one or more metatarsal bones. It occurs as the result of the early closure of the growth plate. While the majority of the reported cases are idiopathic, it can also be seen in association with various genetic conditions or syndromes. Brachymetatarsia most commonly involves the fourth metatarsal followed by the first metatarsal. This rare disorder is mostly bilateral and reported almost exclusively in females. Herein, we present a rare case of congenital unilateral brachymetatarsia which was incidentally detected in a young adult male.