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Characteristics of patients with hypoplastic thumbs
M A James1, H R McCarroll, P R Manske
1Shriners Hospital, San Francisco Unit, CA 94122, USA.
The Journal of Hand Surgery
|January 1, 1996
Summary
This study analyzed 98 patients with hypoplastic thumbs, finding frequent associated anomalies and syndromes. Careful examination and classification are crucial for effective treatment planning in thumb hypoplasia.
Area of Science:
- Orthopedics
- Pediatric Surgery
- Medical Genetics
Background:
- Hypoplastic thumb is a congenital condition affecting thumb development.
- Understanding its characteristics and associated anomalies is vital for patient management.
Purpose of the Study:
- To characterize patients with hypoplastic thumbs.
- To identify common associated anomalies and syndromes.
- To evaluate the utility of a modified Blauth classification for treatment planning.
Main Methods:
- Retrospective review of 98 patients with 160 hypoplastic thumbs (1923-1993).
- Analysis of physical findings, photographs, and X-rays.
- Classification using a modified Blauth's criteria.
Main Results:
- 63% male; 63% bilateral hypoplasia; 59% radial dysplasia; 86% other anomalies.
- 44% had associated syndromes, most commonly VACTERL or Holt-Oram.
- 58% of classifiable thumbs were types 4 and 5 (severe hypoplasia).
- 107 operations performed, including reconstructions and pollicizations.
Conclusions:
- Patients with hypoplastic thumbs require thorough examination for bilaterality, anomalies, and syndromes.
- A modified Blauth classification aids in treatment strategy.
- Early identification and classification are key for optimal surgical outcomes.
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