Height, Ulnar Length and Forearm Function in Multiple Hereditary Exostoses

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

408 participants

Study Classification

OBSERVATIONAL

Study Start Date

2018-01-01

Study Completion Date

2022-02-01

Brief Summary

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the purpose of the present registry is to describe the epidemiology of forearm deformities in patients with Hereditary Multiple Exostoses and to identify, independent predictors of severity of the disease and potential association with genotypic patterns

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Detailed Description

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Hereditary Multiple Exostoses (HME) is a rare pediatric autosomal dominant disorder caused by loss-of-function mutations in the genes encoding the heparan sulfate (HS)-synthesizing enzymes EXT1 or EXT2. HME affects 1 in 50,000 people and has 100% penetrance but great variability in phenotypic expression. HME is characterized by formation of cartilaginous outgrowths, called osteochondromas or exostoses, next to the growth plates of many axial and appendicular skeletal elements, causing multiple, painful disfiguring and disabling skeletal deformities, and potential malignant transformation into peripherral chondrosarcoma.

The involvement of upper-limb bones by HME is associated with greater loss of function than elsewhere in the body, but even here the loss of function may be limited. Moreover, the constant relationship between height and ulnar length has long been recognized in forensic medicine and has been recently analyzed also in HME, in order to predict the clinical and functional outcomes of the upper limb.

the present registry aims to collect demographic, clinical, functional and radiographic information from patients with HME in order to establish phenotypic predictors of severity of the disease and potential association with genotypic patterns

Conditions

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Exostoses, Multiple Hereditary

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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HME group

204 children and adult patients with HME, admitted to our Hospital for diagnosis and treatment.

the patients will be stratified by age in four subgroups:

* subgroup I (0-7 Years)
* subgroup II (8-12 Years)
* subgroup III (13-18 Years)
* subgroup IV (\>18 Years)