South Coast Veterinary Hospital - Laguna Niguel

30001 Town Center Dr. Suite 5
Laguan Niguel, CA 92677



Proximal Abducting Ulnar Osteotomy (PAUL)


Medial compartment disease of the canine elbow is a common, highly debilitating orthopedic condition in need of a better treatment. In an effort to address this need, Dr. Ingo Pfeil, Dresden, Germany, proposed a proximal ulna osteotomy, aimed at unloading the medial compartment, thus reducing pain and improving limb use and function.

The ALPS Proximal Abducting Ulnar Osteotomy (PAUL)* plate, invented and developed by Dr. Ingo Pfeil and KYON Veterinary Surgical Products, imposes a corrective limb alignment, aimed at unloading the medial compartment. Dr. Pfeil began clinical use of the PAUL technique in 2007. In 2010 KYON initiated the next phase of development, expanding to ~30 surgeons worldwide. By early 2012, ~300 cases had been treated. The procedure, as currently practiced with the KYON Advanced Locking Plate System** (ALPS) implants, presents relatively low morbidity and is meeting the expectations of the early adopters in terms of clinical improvement.

The Advanced Locking Plate System (ALPS) reduces iatrogenic trauma and offers greater versatility and increased overall stability, resulting in accelerated fracture healing. The ALPS plating system builds on research and development work done on the PC-Fix (Point Contact Fixator) in the 1980s and 1990s at the AO Research Institute, Davos, Switzerland. Numerous publications have documented the PC-Fix design and clinical results.

Slobodan Tepic, Dr. Sci., CTO, KYON AG, who conducted the research on PC-Fix, has developed the Advanced Locking Plate System (ALPS) as a ?biological internal fixation? system, designed from conception to preserve the vascular supply, increase resistance to infection and accelerate healing. ?Biological internal fixation? involves the use of locked internal fixators, which have minimal implant-to-bone contact, long-span bridging and fewer screws for fixation.[1]
*Patent Pending
**Patented/Patent Pending



Elbow dysplasia and medial compartment disease are leading causes for fore limb lameness. What is elbow dysplasia? What are the consequences and treatment history? read more>>



The PAUL is a novel palliative treatment for medial compartment disease in the canine elbow. What is the biomechanical rationale for PAUL? What are the benefits? read more>>



Dr. Ingo Pfeil, Dresden, Germany and KYON AG invented, developed, and introduced the Proximal Abducting Ulnar Osteotomy procedure for medial compartment disease in dogs. What are the PAUL innovations and how did KYON bring this innovation to the veterinary community? read more>>
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[1] ? Perren SM, ? Evolution of the internal fixation of long bone fractures. The scientific basis of biological internal fixation: choosing a new balance between stability and biology. J Bone Joint Surg Br. 2002 Nov;84(8): 1093-110.

***All copyrights are reserved to Kyon International Inc.