Small patients. Big decisions

This week, we had the privilege of treating two exceptionally young patients at Hong Kong Veterinary Specialty Services: Tofu and Puzzle.

Cases involving puppies and kittens are always special — but from a surgical and orthopaedic perspective, youth brings challenges of its own.
An immature patient is not simply a smaller version of an adult.

Their skeleton is still developing. Their bones are changing in shape and length, their joints are maturing, and their growth plates remain active. This means that an injury occurring today — and the decisions made to treat it — can influence not only how that patient recovers tomorrow, but how their body develops over the months and years ahead.

In a skeletally mature patient, our focus may primarily be on restoring anatomy, stability and function. In a growing patient, we must also ask another question:
What will happen to this reconstruction as the patient continues to grow?

Damage to a growth plate, altered alignment, inappropriate implant placement or failure to anticipate remaining growth can have consequences far beyond the original injury. A seemingly small error at a few months of age can potentially develop into angular limb deformity, altered joint mechanics, progressive osteoarthritis, chronic pain or permanent functional impairment.

Sometimes, the technically easiest solution today is not necessarily the best solution for the patient's future.
That is why treating immature patients requires careful imaging, planning, an understanding of skeletal development and, perhaps most importantly, respect for the growth that has not happened yet.

Tofu and Puzzle reminded us of that responsibility this week.
Puzzle broke her spine after following from 28th floor and Tofu was born with a high grade of luxation to her kneecap causing severe deformity of her rear limb...
Two very young patients. Two very different challenges. And in both cases, the same objective: not simply to treat the patient in front of us today, but to protect the adult animal they are still becoming.

We are grateful to their families and referring veterinary teams for entrusting us with their care.

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Puzzle's Case: Dynamic Stabilisation of a T12–T13 Spinal Fracture in a Juvenile Patient

 

Following a fall from the 28th floor, Puzzle sustained a traumatic spinal fracture involving the **T12–T13 region of the thoracic spine**.

 

Managing spinal fractures in juvenile patients presents unique challenges. The developing vertebral column differs from that of an adult in terms of bone maturity, anatomical dimensions and ongoing skeletal growth. These factors must be considered when choosing a surgical stabilisation technique.

 

An Individualised Approach: Dorsal Spinal Tension Band Stabilisation

 

For Puzzle, our surgical team selected dynamic spinal stabilisation using a dorsal spinal tension band.

 

The dorsal tension band concept aims to counteract distracting and flexion forces acting across an injured spinal segment, supporting stability through a biomechanically targeted approach.

 

Unlike conventional rigid fixation strategies, a dynamic stabilisation construct is designed to provide controlled mechanical support. However, the degree of movement permitted and its effects on spinal growth depend on the specific construct and clinical circumstances.

 

In a juvenile patient, the choice of technique must balance several important considerations:

 

- Providing sufficient stability to protect the injured spinal segment.

- Maintaining appropriate vertebral alignment during healing.

- Minimising additional injury to developing anatomical structures.

- Considering the potential effects of fixation on the growing spine.

- Supporting neurological recovery and long-term function.

 

Puzzle's case demonstrates why complex spinal injuries in young animals require careful evaluation of both immediate mechanical stability and future skeletal development.

 

Beyond Fracture Repair: Thinking About the Growing Spine

 

The goal of spinal surgery in a juvenile patient extends beyond achieving immediate fracture stability.

 

The surgeon must consider how the selected fixation method may influence spinal biomechanics and development as the patient matures.

 

Puzzle's treatment illustrates an important principle of specialist veterinary surgery: the surgical technique should be adapted to the patient's injury, anatomy and stage of growth — rather than applying the same fixation strategy to every patient.

 

At Hong Kong Veterinary Specialty Services (HKVSS), we approach complex spinal injuries with individualised surgical planning, integrating biomechanical principles with the specific needs of each patient.