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Articular cartilage wear is one of the most commonorthopedic problems affecting people of all ages. Whether resulting from injury, overuse, or degenerative changes, cartilage damage can lead to chronic pain, limited movement, and a reduced quality of life. Until recently, the treatment of such problems ranged from physiotherapy, biological injections or, in the most advanced cases, total arthroplasty. 

Technology and personalized medicine bring to the fore a new, innovative solution, surface cartilage replacement with customized implants, a technique that acts as a “seal” of the lesion, offering relief without the complications of a major operation. 

What is Surface Cartilage Replacement?

This is a minimally invasive surgical technique aimed at replacing specific, focused lesions in the articular cartilage, without affecting other structures of the joint, such as the menisci or ligaments. The method involves the placement of a customized implant that is perfectly applied to the lesion and restores the functionality of the joint. 

Where is the technique applied?

Surface cartilage replacement is applied to:

• Focal cartilage lesions in the knee (e.g. in the femoral condyle or on the pulley)

• Cartilaginous lesions of the ankle

• Cases without generalized osteoarthritis, but with localized degeneration 

The method is intended for patients who have undergone conservative or biological treatments (intraarticular injections, autologous grafts, PRP) without success and are not ready, or it is not necessary, to proceed with total joint replacement. 

Personalized treatment

The element that makes the method unique is the absolute personalization of the implant. Specifically: 

1. The patient undergoes a high-resolution MRI scan. 
2. The image is used to create a 3D model of the joint. 
3. The implant is custom-made to fit the morphology of the lesion with millimeter precision. 

The result is a completely personalized implant that fits perfectly, without causing a foreign body sensation or changes in the kinematics of the joint.

How is the procedure performed?

The surgery is short and is performed:

• Under general or regional anesthesia

• With a small incision, 5–6 cm long

• With special tools and models that accompany the implant

• Using minimally invasive technique 

During the surgery, the lesion is highlighted and cleaned, the implant is placed with great precision and all other structures of the joint are kept intact. 

What are the advantages of the technique?

The advantages of surface cartilage replacement are multidimensional:

• A minor operation without the gravity of total arthroplasty

• Preservation of normal anatomical elements (ligaments, menisci)

• No change in knee kinematics

• Absence of foreign body sensation

• Immediate mobilization and return to activities

• Little blood loss and minimal postoperative pain

• Very short recovery time (10–15 days) 

The technique can be applied regardless of age, however it is particularly indicated for:

• Younger patients with traumatic cartilage lesions

• Patients who did not respond to biological therapies

• People with identified problem and preserved remaining knee

• Athletes who want a rapid return to full activity 

Unlike total arthroplasty, surface replacement does not require the removal of healthy anatomical elements, nor the complete replacement of the joint. Normal knee kinematics and stability are maintained, while the sensation of the “mechanical knee” often reported after total arthroplasty is avoided. 

In addition, the surface technique acts protectively, significantly slowing down and in many cases preventing the need for future total arthroplasty. 

Studies and Effectiveness

Clinical studies of the last decade have shown excellent results: 

• 90% patient satisfaction after 5 years of follow-up

• Significant pain reduction and improved mobility

• Minimal Complications and high implant retention 

It is worth noting that modern 3D printing technologies and biocompatible materials make implants safe and durable for long-term use. 

Conclusion

Surface cartilage replacement is a valuable solution for patients with localized damage to the articular cartilage. With the power of personalization and the capabilities of modern surgery, the method offers relief from symptoms, faster recovery and maintenance of normal joint function. 

Informing the public and physicians about this new approach can reduce unnecessary total joint replacements and offer targeted, quality treatment to patients who really need it.