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Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head

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Computer-navigated versus conventional total knee arthroplasty a prospective randomized trial.

Young-Hoo Kim¹, Jang-Won Park, Jun-Shik Kim

¹The Joint Replacement Center at Ewha Womans University MokDong Hospital, 911-1, MokDong, YangChun-Ku, Seoul, Republic of Korea. younghookim@ewha.ac.kr

The Journal of Bone and Joint Surgery. American Volume

|October 12, 2012

Summary

Computer-navigated total knee arthroplasty shows no significant difference in patient function, alignment, or implant survival compared to conventional methods. This study found similar outcomes for both total knee replacement techniques after a decade of follow-up.

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Area of Science:

Orthopedic Surgery
Biomedical Engineering
Clinical Trials

Background:

Limited evidence exists on whether computer-navigated total knee arthroplasty (CN-TKA) improves functional outcomes or prosthesis durability compared to conventional TKA.
Radiographic alignment improvements with CN-TKA have not been definitively linked to enhanced daily living activities or long-term implant survival.

Purpose of the Study:

To evaluate if CN-TKA leads to better clinical function, radiographic alignment, and component survivorship than conventional TKA.
To compare patient-reported outcomes and objective measures between navigated and non-navigated TKA procedures.

Main Methods:

Prospective, randomized comparison of 520 patients undergoing CN-TKA in one knee and conventional TKA in the contralateral knee.
Patients (mean age 68 years) were assessed using the Knee Society rating system and WOMAC scores at multiple intervals up to 10.8 years post-surgery.

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Demographics included 452 women and 68 men, with a mean follow-up of 10.8 years.

Main Results:

No statistically significant differences were observed in total knee scores, function, pain, WOMAC scores, motion, or activity levels between CN-TKA and conventional TKA groups.
Radiographic alignment and component survivorship did not differ significantly between the two surgical techniques.
Kaplan-Meier survivorship at 10.8 years was high and comparable: 98.8% for CN-TKA versus 99.2% for conventional TKA.

Conclusions:

Computer-navigated total knee arthroplasty does not offer superior clinical function, alignment, or component survivorship compared to conventional total knee arthroplasty.
The findings suggest that the benefits of computer navigation in TKA may not translate into improved patient outcomes or implant longevity in the long term.