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[Pollex flexus congenitus]
Zeitschrift Fur Orthopadie Und Ihre Grenzgebiete
|May 1, 1992
Summary
Congenital pollex flexus, a thumb flexion deformity, is often hereditary and involves a tendon knot. Surgical outcomes for 52 thumbs are reported, with conservative treatment possible in the first year.
Area of Science:
- Orthopedics
- Developmental biology
- Genetics
Context:
- Congenital pollex flexus presents as a permanent flexion anomaly in the interphalangeal joint of the thumb.
- A characteristic palpable knot in the long flexor tendon is typically observed.
- Diagnosis and treatment are often delayed, despite some cases being evident at birth.
Purpose:
- To report on the incidence, clinical presentation, etiology, pathogenesis, and treatment of congenital pollex flexus.
- To communicate surgical results for 52 affected thumbs.
- To explore the hereditary and pathogenetic factors contributing to this condition.
Summary:
- The condition is hypothesized to be hereditary, supported by twin studies, bilateral occurrences, and familial incidence.
- Constriction of the synovial sheath over the thumb's basal joint is a key pathogenetic factor.
- Pathological findings include lymphocyte/monocyte infiltration and metaplasia to fiber cartilage in some cases.
Impact:
- Surgical intervention results for congenital pollex flexus are presented.
- Conservative management, including splinting after manual correction, may be attempted in the first year of life.
- Understanding the pathogenesis aids in developing effective treatment strategies for this congenital hand anomaly.