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Measurement of Healthy and Injured Triceps Surae Morphology
Published on: October 27, 2023
Relevant anatomic landmarks and measurements for biceps tenodesis
Russell Lafrance1, Wes Madsen, Zaneb Yaseen
1Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY 14642, USA.
The American Journal of Sports Medicine
|April 9, 2013
Summary
Biceps tenodesis placement is critical for optimal tension. The long head of the biceps tendon (LHBT) musculotendinous junction (MTJ) begins proximally, guiding optimal tenodesis sites for improved outcomes.
Area of Science:
- Orthopedic surgery
- Anatomy
- Biomechanical research
Background:
- Biceps tenodesis near the pectoralis major insertion can negatively impact biceps resting tension and clinical results.
- Understanding the precise anatomical relationship is crucial for successful surgical outcomes.
Purpose of the Study:
- To define the anatomical relationship between the biceps musculotendinous junction (MTJ) and the pectoralis major tendon.
- To provide guidelines for optimal biceps tenodesis site selection to restore proper biceps tension.
Main Methods:
- Descriptive laboratory study involving cadaveric dissections.
- Measurements of the pectoralis major tendon width and its proximal footprint.
- Recording the distance from the pectoralis major footprint to the biceps MTJ and the MTJ length.
Main Results:
- The pectoralis major tendon insertion width averaged 76.8 mm.
- The biceps MTJ initiated an average of 32.4 mm distal to the pectoralis major footprint.
- The distal end of the biceps MTJ was located approximately 3.3 cm distal to the inferior border of the pectoralis major tendon.
Conclusions:
- The biceps MTJ's proximal origin may be underestimated during surgery.
- Anatomical knowledge of the long head of the biceps tendon (LHBT) and pectoralis major tendon is essential for guiding biceps tenodesis.
- Optimal tenodesis should position the distal LHBT MTJ about 3 cm distal to the pectoralis major tendon footprint.
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