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Joint hypermobility and genetic collagen disorders: are they related?
1Hypermobility Clinic, UCL Hospitals, London, UK.
Insights
Hypermobility is common in rare inherited connective tissue disorders (HDCTs) like Ehlers-Danlos syndrome. Researchers explore if symptomatic hypermobility exists independently of these genetic conditions.
Area of Science:
- Genetics
- Rheumatology
- Rare Diseases
Background:
- Hypermobility is a shared characteristic of hereditary connective tissue disorders (HDCTs), including Ehlers-Danlos syndrome, Marfan syndrome, and osteogenesis imperfecta.
- Hypermobility is also frequently observed in the general population, complicating diagnosis.
- Benign joint hypermobility syndrome shares many features with HDCTs, leading to diagnostic challenges.
Purpose of the Study:
- To investigate the relationship between symptomatic hypermobility and hereditary connective tissue disorders (HDCTs).
- To determine if hypermobility can exist independently of diagnosed HDCTs.
Main Methods:
- Review of existing literature on HDCTs and hypermobility syndromes.
- Comparative analysis of clinical features and diagnostic criteria for HDCTs and benign joint hypermobility syndrome.
Main Results:
- Hypermobility is a common feature across various HDCTs.
- Significant overlap exists between benign joint hypermobility syndrome and HDCTs.
- The independent existence of hypermobility unrelated to HDCTs remains unclear.
Conclusions:
- Further research is needed to differentiate between hypermobility as a symptom of HDCTs and as an independent condition.
- Clarifying the relationship between hypermobility and HDCTs is crucial for accurate diagnosis and management.
Abstract:
The HDCTs constitute a heterogeneous group of rare genetically determined diseases, the best known of which are Ehlers-Danlos and Marfan syndromes and osteogenesis imperfecta. Hypermobility is a feature common to them all, but it is also a feature that is highly prevalent in the population at large. Symptomatic hypermobile subjects (whose symptoms are attributable to their hypermobility) are said to be suffering from the benign joint hypermobility syndrome, which has many features that overlap with the HDCTs. It is not yet known whether there is a variety of hypermobility (symptomatic or otherwise) that is not part of a connective tissue disorder.
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