Mako SmartRobotics knee replacement helps retiree re-gain her mobility

Recent retirees Hilary Vos and husband Erik finally had the time to travel and live life to the fullest. They found a charming craftsman home in East Sacramento, nestled among tree-lined streets and delighted in walking their new puppy — a pug they named Polo.

There was only one problem: Hilary’s right knee was in pain.

“It started about four years ago during hikes,” Vos said. “Particularly on uneven trails, my knee began to hurt. I was nursing it along on our travels, but it was swollen and stiff. Before I knew it, the knee issue began to trigger foot pain and I was unable to enjoy the activities I loved.”

Vos developed patellar tendonitis, which can sometimes be caused by instability of the knee. Symptoms include pain below the knee where the tendon connects to the shinbone. X-rays showed the cartilage cushioning the ends of the femur and the tibia were worn away. Her bones were rubbing directly and painfully against each other.

Knee problems can trigger a domino effect, causing pain to cascade all the way down to the feet. Her doctor said knee replacement surgery was unavoidable.

Vos, a former TV journalist, researched her options. She quickly realized robotic knee surgery would likely give her the results she was looking for. A technology called Mako SmartRobotics caught her attention.

“Compared to conventional knee surgery, the Mako technology appeared to shorten recovery time significantly,” Vos said. “I was pleased to learn that I wouldn’t have to go far to find a surgeon familiar with the technology.”

Precision in motion: Transforming joint care

UC Davis Health’s Department of Orthopaedic Surgery is using the innovative Mako SmartRobotics system to redefine joint replacement procedures.

Unlike traditional joint replacement techniques, the Mako system uses patient-specific 3D planning and real-time guidance during the surgery. Each procedure is customized to the patient’s unique anatomy, and the robotic arm helps the surgeon work precisely. It allows for a minimally invasive, highly tailored surgical experience, which can lead to reduced pain, quicker recovery times and longer-lasting joint implants.

The process begins with a CT scan that creates a detailed 3D model of the patient’s knee. Surgeons use this model to develop the personalized surgical plan. During the procedure, the Mako robotic arm assists in removing only the damaged bone and cartilage, preserving as much healthy tissue as possible.

“Accuracy is what it is all about,” said Vos’ surgeon, Adam Taylor. “The pre-op CT scan is uploaded to the Mako robot, so the surgery is planned weeks in advance. Then we just execute the plan on the day of surgery.”

The system provides real-time feedback and guidance, ensuring that bone preparation and implant placement align perfectly.

Taylor said the precision is within 0.5 millimeters — as thin as a piece of paper.

“That’s what ensures the perfect implant fit,” Taylor added.

In September, Vos had Mako knee replacement surgery at UC Davis Health’s newly opened 48X Surgery Complex. The procedure went smoothly and by evening she was back home recovering.

Back to walks with Polo

With daily physical therapy exercises. Vos worked toward putting away the walker and then the cane. Within a month, she began working out on the exercise bike and taking short walks with her husband and Polo.

A recent follow-up visit with Taylor brought good news.

“I’m pleased with Hilary’s progress. She is an amazing patient and follows post-op instructions closely,” Taylor said.

To request an appointment with the UC Davis Health orthopaedics team, call 916-734-2700 or 800-252-3456

Related links:

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