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Epidemiologic study of the mallet finger deformity.
1University of Pittsburgh School of Medicine, Pa.
The Journal of Hand Surgery
|May 1, 1988
Summary
This study found a high incidence of familial mallet fingers, often caused by minor injuries. The research suggests a genetic link and highlights associated carpal tunnel and trigger finger conditions.
Area of Science:
- Orthopedics
- Genetics
- Epidemiology
Background:
- Mallet finger, a digital extensor tendon injury, can lead to significant functional impairment.
- Familial clustering of musculoskeletal conditions suggests potential genetic predispositions.
Purpose of the Study:
- To investigate the incidence and characteristics of mallet fingers within a three-generation family.
- To explore potential familial aggregation and associated conditions.
Main Methods:
- Epidemiologic survey of 24 family members across three generations.
- Clinical examination to identify and classify mallet fingers.
- Assessment for associated conditions like carpal tunnel syndrome and trigger fingers.
Main Results:
- An unusually high incidence of 20 mallet fingers was observed in 7 family members.
- Multiple mallet fingers (2-6) occurred in 4 individuals, indicating a strong familial predisposition.
- 85% of mallet fingers resulted from minimal trauma or spontaneous events.
- Associated bilateral carpal tunnel syndrome (71%) and trigger fingers (43%) were noted in affected individuals.
Conclusions:
- A significant familial predisposition to developing mallet fingers exists.
- Mallet fingers in this family often arise from minimal or no apparent trauma.
- Co-occurrence of carpal tunnel syndrome and trigger fingers warrants further investigation in familial mallet finger cases.