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Cirugía Plástica Ibero-Latinoamericana

On-line version ISSN 1989-2055Print version ISSN 0376-7892

Abstract

GARCIA-GARCIA, Javier Francisco; SEGOVIA-GONZALEZ, María; GONZALEZ-GONZALEZ, Alicia  and  BENITO-DUQUE, Pablo. Cortical thinning and tumoral area. Predictors of pathological fracture in enchondromas of phalanges of the hand?. Cir. plást. iberolatinoam. [online]. 2022, vol.48, n.3, pp.329-338.  Epub Dec 05, 2022. ISSN 1989-2055.  https://dx.doi.org/10.4321/s0376-78922022000300010.

Background and objective.

Enchondromas are the most common primary tumors involving phalanges of the hand. When they are identified in asymptomatic patients, surgeons must decide between surgery or watchful waiting. Till the date, there is no established radiological parameter for determining the risk of pathological fracture.

Our study aims to determine the utility of two radiographic indicators, amount of cortical thinning and bone area occupied by tumor, as predictors of pathological fracture.

Methods.

Retrospective, observational and analytic, case-control study, conducted between 2003 and 2017. Eighteen patients with enchondromas of phalanges of the hand were operated on; 9 of them were asymptomatic (control, group A), and in the other 9 cases (group B), pathological fracture was the first presenting symptom of disease. In order to identify radiological parameters associated with pathological fracture, we analyzed their anteroposterior and lateral preoperative radiographs. We measured the bone area occupied by tumor, and the amount of cortical thinning, in both groups.

Results.

There was no statistically significant difference between the two groups with respect to bone area occupied by tumor (p > 0.1). Nevertheless, the amount of cortical thinning was significantly higher in group B (p < 0.1).

The probability of developing a pathological fracture was increased in bones with greater cortical thinning. This was observed in anteroposterior radiographs [Odds Ratio (OR) 16, Confidence Interval (CI) 90% 1.97-130.24] (p=0.01) and in lateral radiographs (OR 7, CI 90% 1.21-40.62) (p=0.03).

Conclusions.

Our study suggests a positive association between cortical thinning and development of pathological fracture in hand phalanges affected by enchondromas.

Keywords : Enchondroma; Phalanx; Hand; Pathological fracture; Radiography.

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