Extracapsular repair is recommended for cats and small dogs (up to 10-15kg). This involves:
Opening the joint to examine the meniscal cartilages.
Removing the torn ligament fragments and any damaged cartilage.
Tightening and suturing closed the joint capsule.
Replacing the function of the ruptured ACL with strong non-absorbable suture material placed from the bottom of the femur to the front of the tibia. (This is often secured with metal crimps, which you may feel under the skin.)
The tissues under the skin are then closed and tightened to further stabilise the joint.
Finally, the skin incision is closed using absorbable sutures.
Antibiotic cover (on the day and in some cases ongoing) and A LOT of pain relief is given throughout the procedure and recovery period.