Related Experiment Videos
Safe extracapsular placement of proximal tibia transfixation pins
Thomas A DeCoster1, Mark K Crawford, Michelle A Steven Kraut
1Department of Orthopedics and Rehabilitation, University of New Mexico, Albuquerque, New Mexico 87131-5296, USA
Journal of Orthopaedic Trauma
|October 9, 2004
Summary
This study details knee joint capsule insertion on the proximal tibia. Proper placement of transfixation pins, at least 14mm from the subchondral line, prevents capsular penetration.
Area of Science:
- Orthopedic surgery
- Anatomy
Background:
- Accurate knowledge of knee joint anatomy is crucial for orthopedic procedures.
- Transfixation pins are used in proximal tibia fracture fixation.
Purpose of the Study:
- To precisely identify the knee joint capsule's tibial insertion site.
- To determine safe zones for transfixation pin placement.
Main Methods:
- Anatomical dissection of cadaveric knee specimens.
- Radiographic and arthroscopic evaluation of patient knees.
Main Results:
- The capsule inserts 4-14mm below the tibial articular surface.
- The anterior capsule is within 6mm of the joint line.
- Posteromedial and posterolateral capsules extend to 14mm.
Conclusions:
- Transfixation pins can avoid capsular penetration if placed >14mm from the subchondral line.
- For anterior placement (<6mm), Zone 1 is recommended to prevent penetration.