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[Accessory tendons in the human carpal tunnel].
Summary
Supernumerary tendons are common, with one in four individuals having them on one or both hands. Finding one increases the likelihood of others, particularly on the ulnar side fingers.
Area of Science:
- Anatomy
- Human Morphology
- Musculoskeletal System
Context:
- Prevalence of anatomical variations in the human hand.
- Understanding accessory tendons and their distribution.
- Investigating the role of specific digits in hand anatomy.
Purpose:
- To statistically analyze the occurrence of supernumerary tendons in the hand.
- To determine the correlation between the presence of one accessory tendon and the likelihood of others.
- To describe a novel muscle variation within the carpal canal.
Summary:
- Statistical analysis indicates that 25% of individuals possess a supernumerary tendon in the right hand, 25% in the left, and 25% in both.
- The presence of an accessory tendon significantly increases the probability of additional supernumerary tendons.
- The ulnar three fingers form a distinct group, while the index finger exhibits unique characteristics. A new muscle variation traversing the carpal canal is identified.
Impact:
- Provides baseline data on supernumerary tendon prevalence.
- Highlights potential implications for surgical procedures and understanding hand biomechanics.
- Contributes to the anatomical knowledge base regarding hand variations and novel muscle structures.