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Optimizing hook implantation angle of the clavicular hook plate: a cadaveric study
Pamok Saengsirinavin1, Chumnarn Iamsirikulmit2, Peerapong Piyapittayanun2
1Royal Thai Police Headquaters, Police General Hospital, Bangkok, Thailand. pamok_s@docchula.com.
Summary
Optimizing clavicle hook plate placement by angling the hook laterally and at zero degrees maximizes contact surface area. This technique may reduce stress concentration and minimize complications in shoulder surgery.
Area of Science:
- Orthopedic surgery
- Biomechanical analysis
- Implant design
Background:
- Clavicle hook plates are used for shoulder function.
- Plate tip pressure can cause complications.
- Optimizing plate fit is crucial.
Purpose of the Study:
- Investigate hook implantation angles.
- Analyze contact surface area with the acromion.
- Minimize mismatch and maximize contact area.
Main Methods:
- Used 20 soft shoulder cadavers.
- Measured contact surface area at various hook angles.
- Compared medial and lateral row placements.
Main Results:
- Lateral row placement showed superior compatibility (84.0% vs 46.67%).
- Lateral placement offered broader (3.55 mm vs 3.09 mm) and longer (7.36 mm vs 5.10 mm) contact.
- A zero-degree angle in the lateral position yielded the largest contact area (width: 3.91 mm, length: 8.85 mm).
Conclusions:
- Lateral, zero-degree hook placement maximizes contact area.
- This technique may reduce stress and complications.
- Further research on anatomical variations is needed.
