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Congenital perforation of the triangular fibrocartilage of the wrist
Insights
Perforations in the triangular fibrocartilage (TFC) are common in both fetuses and infants. These wrist joint findings suggest congenital origins for some TFC perforations, unrelated to sex or side.
Area of Science:
- Anatomy
- Developmental Biology
- Orthopedics
Background:
- The triangular fibrocartilage complex (TFCC) is crucial for wrist joint stability and function.
- Perforations of the triangular fibrocartilage (TFC), a component of the TFCC, are often associated with injury or degeneration.
Purpose of the Study:
- To investigate the incidence and characteristics of TFC perforations in fetal and infant wrist joints.
- To explore potential congenital origins of TFC perforations.
Main Methods:
- Examination of 136 wrist joints from 48 fetuses and 20 infant fresh cadavers.
- Macroscopic and histological analysis to identify and characterize TFC perforations.
- Statistical analysis to assess correlations with age, sex, and side.
Main Results:
- TFC perforations were observed in 25% of fetal wrists and 18.8% of infant wrists.
- No statistically significant difference in perforation incidence between fetuses and infants.
- Perforation incidence did not correlate with sex or the side of the wrist.
- Histological analysis showed no significant correlation between vascularity/cellularity and perforation presence.
Conclusions:
- A significant proportion of TFC perforations may be congenital, presenting as fissures primarily in the radial aspect.
- Congenital factors, in addition to trauma, inflammation, and degeneration, likely contribute to TFC perforations.
Abstract:
The triangular fibrocartilages (TFC) of 136 wrist joints from 48 fetuses and 20 infants fresh cadavers without any evidence of known deformity and injury were studied. Perforations of the TFC were found not only in infants (18.8%), but also in fetuses (25%). The difference between the incidences of the perforations in the two groups is not statistically significant (P > 0.05). Furthermore, we did not find that perforation of the TFC is correlated with either sex or side of wrists (P > 0.05). Histologically, the vascularity and cellularity of the TFC have no significant correlation with the absence or presence of perforation in it. We believe that, besides trauma, inflammation and degeneration, some perforations of the TFCs are congenital in origin, which all take the form of fissure and are located mainly in the radial half of the TFC.