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Z-lig

Synthetic ligament (UHMWPE) composed of free fibers, providing excellent mechanical strength, particularly in the active zone of the joint. This specific architecture is designed to withstand in vivo mechanical stresses and promotes fibroblast colonization, resulting in improved tissue integration.

It is primarily intended for cranial cruciate ligament reconstruction, while also allowing other ligament reconstructions in dogs and cats, including the caudal cruciate ligament, collateral ligaments, as well as the Achilles tendon in small-sized patients.

physiological reconstruction

Free fibers favor fibroblast infiltration

Fatigue-tested for 12 million cycles

Z-lig model®WeightResistance
16 / 103 - 6kg2000 N
24 / 156 - 12 kg3 000 N
32 / 1712 - 25 kg4 000 N
48 / 19+ 25 kg6 000 N
48 / 22+ 25 kg6 000 N
48 / 25+ 25 kg6 000 N

Number of fibers / length of free fibers (mm)

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The major application :

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Cranial cruciate ligament reconstruction

Related articles

Why choose free fibers ?

2025-07-16

Free fibers offer two major advantages.1. Mechanical resistance:In the active zone of the implant (Z-lig®), the residual fatigue resistance (combined tension, flexion, and torsion) of free fibers is significantly higher than all other tested structures (12 million cycles), whether woven, knitted, or braided, which degrade more or less rapidly (structure elongation) and release debris into the joint before mechanical failure.Free fibers produce no particle debris, and elongation after this testing phase was approximately 2%. 2. Promotes fibroblast colonization and growth of new collagen aligned with the direction of tensionThe architecture of free fibers is porous and conducive to fibroblast infiltration (unlike braided structures, which are dense, opaque, and minimally permeable). When a healthy remnant of the cranial cruciate ligament (CCL) is present, it should be preserved as much as possible, as it facilitates fibroblast regrowth and the development of collagen oriented along the direction of tension.

3 years after cranial cruciate ligament reconstruction

2025-02-06

Follow-up from 2 weeks to 3 years post-surgery:Three years after his surgery in December 2021, we had the pleasure of seeing this Belgian Malinois again, operated on with the Z-lig® (UHMWPE) 48 / 19 fibers (6 000 N) implant.Video – 2 weeks post-surgery: During a clinical examination with the referring veterinarian, followed by a training session, the results were very encouraging:Stable stifleNo joint laxityNo residual lamenessFull endurance during daily activitiesWe are pleased to see that STIF – Pet Care, with its uniquely engineered implant technology, is helping to advance the surgical treatment of ligament and tendon injuries in both dogs and cats.The recommended surgical techniques ensure a fast recovery for the animal and peace of mind for pet owners during the post-operative period.Video 3 years after surgery:

Training session dedicated to the use of Z-lig®

2025-04-07

Recap of our training on cranial cruciate ligament intra-articular reconstructionThe 6th of April, participants had the opportunity to:Discover the strong legacy of STIF – Pet Care in human surgery and its expertise in veterinary orthopedics.Explore the evolution of our free fibers technology, specifically adapted for veterinary surgery.Learn more about current and potential applications, and practice the cranial cruciate ligament reconstruction technique in dogs. In the morning, participants focused on theory and discussion around the fundamental principles.In the afternoon, hands-on work on anatomical specimens: participants performed a cranial cruciate ligament reconstruction in dogs, carefully reviewing each technical step to master all the essential aspects—especially the details that optimize post-operative recovery and ensure long-term stability of the results.A warm thank you to our instructors, Drs. Antonio Munhoz & Geoffrey Pagès (Dipl. ECVS), for their expertise and teaching skills, and to Neo Animalia for its commitment to high-quality training.📆 Upcoming sessions in this format: September 27 (EN) & September 28 (FR), 2025 📍 Louvain-La-Neuve 📩 Registration is open : sign up now.

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Our Training and Program Schedule

To discover the R&D process of our innovations and to learn about the surgical techniques we offer, with expert trainers.

Our Training and Program Schedule

To discover the R&D process of our innovations and to learn about the surgical techniques we offer, with expert trainers.