Executive Editor: Jörg Auer

Authors: Patricia Hogan

Phalanges Proximal sesamoid bones, Abaxial

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Glossary

Abaxial fracture of the proximal sesamoid bone - removal enlarge

Arthroscopic examination

In lateral recumbency the arthroscope is inserted through the proximal most aspect of the palmar pouch, whereas the instruments are inserted through a separate incision at the level of the fracture plane.


Abaxial fracture of the proximal sesamoid bone - removal enlarge

The arthroscope is inserted and the fracture configuration inspected.


Abaxial fracture of the proximal sesamoid bone - removal enlarge

Fragment removal

The fragment is freed from its attachments with the help of sharp instruments such a scalpels, special, curved small osteotomes or sharp periosteal elevators. Once freed up the fragment is removed as a whole. Dependent upon the size of the fragment the instrument incision may have to be enlarged for fragment removal.


Abaxial fracture of the proximal sesamoid bone - removal enlarge

Another option is the use of an arthrobur to grind down the fragment and remove the debris via suction.

A combination of these techniques is also possible and larger fragments scan be split with an osteotome and removed fragment by fragment.


Abaxial fracture of the proximal sesamoid bone - removal enlarge

Debridement and inspection of the fracture bed

Once the fragment is removed the joint is thoroughly inspected and any remaining debris or any small fragments are removed. Special attention is given to the ligamentous attachment remains, which are checked for osseous remains attached to them.

It is advisable to take intraoperative radiographs to assure that the entire fragment is removed. Intraoperative fluoroscopy represent another option.


Lavage and closure

The joint is thoroughly lavaged, the excess fluid removed from the joint, the arthroscope removed and the incisions closed using routine technique. A sterile pressure bandage is applied to the limb with the horse still on the table.

v1.3 2013-11-20