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Lateral Unicompartmental Knee Arthroplasty (UKA) Showed a Lower Risk of Failure Compared to Medial Unicompartmental Knee Arthroplasty in the Register of Prosthetic Orthopedic Implants (RIPO)

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Lateral Unicompartmental Knee Arthroplasty (UKA) Showed a Lower Risk of Failure Compared to Medial Unicompartmental Knee Arthroplasty in the Register of Prosthetic Orthopedic Implants (RIPO)

Stefano Zaffagnini, MD, Prof., ITALY Domenico Alesi, MD, ITALY Barbara Bordini, Stat, ITALY Stefano Fratini, MD, ITALY Cristina Ancarani, Stat, ITALY Piero Agostinone, MD, ITALY Alberto Grassi, PhD, ITALY Giulio Maria Marcheggiani Muccioli, MD, PhD, Associate Professor, ITALY

IRCCS Istituto Ortopedico Rizzoli, Bologna, ITALY

2023 Congress ePoster Presentation 2023 Congress Not yet rated

Anatomic Location

Knee

Anatomic Structure

Bones

Treatment / Technique

Arthroplasty

Patient Populations

Elderly

Diagnosis / Condition

Arthritis

Summary: This registry study showed that lateral UKA is a safe procedure showing longer survivorship than medial UKAs (95.2% and 87.5% at 10 years, respectively)

Introduction

The present study aimed to investigate differences in survivorship between medial and lateral unicompartmental knee arthroplasty (UKA) by analyzing the data of an Italian regional registry. The hypothesis was that, according to recent literature, lateral implants have comparable survivorship with regard to the medial implants.

Materials And Methods

The Register of Orthopaedic Prosthetic Implants (RIPO) of Emilia-Romagna (Italy) database was searched for all UKAs between July 1, 2000, and December 31, 2019.
For both cohorts, subject demographics and reasons for revision were presented as a percentage of the total cohort. Kaplan-Meier survivorship analysis was performed using revision of any component as the endpoint and survival times of unrevised UKAs taken as the last observation date (December 31, 2019, or date of death).

Results

Patients living outside the region and symmetrical implants (which do not allow the compartment operated to be traced) were excluded. 5571 UKAs implanted on 5172 patients (5215 medial UKAs and 356 lateral UKAs) were included in the study.
The survivorship analysis revealed 13 failures out of 356 lateral UKAs (3.7%) at mean 6.3 years of follow up and 495 failures out of 5215 medial UKAs (9.5%) at mean 6.7 years of follow up. The medial UKAs had a significantly higher risk of failure, with a Hazard Ratio of 2.6 (CI 95% 1.6-4.8; p< .001), adjusted for age, gender, weight, and mobility of the insert. Both the groups revealed a good survival rate, with 95.2% of lateral implants and 87.5% of medial implants still in situ at 10 years of follow-up.

Conclusions

Lateral UKA is a safe procedure showing longer survivorship than medial UKAs (95.2% and 87.5% at 10 years, respectively) in the present study.

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Subtalar Joint Compensation using Full-length Standing Lower Extremity Anteroposterior Radiograph after Total Knee Arthroplasty for Varus Osteoarthritis in Nara Medical University Hospital with 2-year Follow-up ePoster Presentation Jerre Co De Guzman, MD, PHILIPPINES Munehiro Ogawa, MD, PhD, JAPAN Yusuke Ozaki, MD, JAPAN Yasuhito Tanaka, Prof., JAPAN Yuki Nishimura, MD, JAPAN Maria Elizabeth Mercado, MD, MAS, PHILIPPINES
In-Vivo Kinematic Analysis of Evolution® Medial-Pivot Total Knee Arthroplasty during Weight-Bearing Activity ePoster Presentation Eiichi Nakamura, MD, PhD, JAPAN Nobukazu Okamoto, MD, PhD, JAPAN Hitoshi Ito, MD, PhD, JAPAN Tetsurou Masuda, MD, PhD, JAPAN Satoshi Hisanaga, MD, PhD, JAPAN Yasunari Oniki, MD, PhD, JAPAN
Is Surgeon Assessed Bone Quality During Total Knee Arthroplasty a Valid Tool To Diagnose Osteoporosis ? ePoster Presentation Adit Rajesh Maniar, MBBS, MS Orthopaedics, DNB Orthopaedics, INDIA Arpit Vasantbhai Bavaskar, MBBS, D.Orth., INDIA Vishal Raina, MS, INDIA Akshay Nayak, M.B.B.S, M.S , INDIA Ashwini Khokhar, MS, INDIA Rajesh Maniar, INDIA
Effect of Altered Knee Joint Loading Pattern in Gait Biomechanics of Total Knee Arthroplasty Patient ePoster Presentation Sang Jin Lee, MD, PhD, KOREA, REPUBLIC OF
Success of Debridement, Antibiotics, and Implant Retention vs Revision In Early And Late Prosthetic Joint Infections Following Primary TKA: A Prospective, Multicenter Study of 251 Cases ePoster Presentation Mark Zhu, MBChB, NEW ZEALAND Richard Rahardja, MBChB, BMedSc(Hons), NEW ZEALAND Laurens Manning, MBChB, AUSTRALIA Sarah Metcalf, MBChB, NEW ZEALAND Simon W. Young, MD, FRACS, NEW ZEALAND
Bicruciate Substituting Total Knee Arthroplasty Improved Anteroposterior Displacement in Mid-Flexion Range ePoster Presentation Keinosuke Ryu, Prof., JAPAN Takanori Iriuchisima, MD, JAPAN
Long-Term Results of Per-Operative Knee Arthroscopy in Confirming Suitability for Unicompartmental Arthroplasty ePoster Presentation James Gill, MB BChir, BSc, FRCS, UNITED KINGDOM McMeniman J Peter, AUSTRALIA Timothy John Mcmeniman, MBBS(Med)/MBBS, FRACS FA(Orth)A, AUSTRALIA Daniel Johnson Brimm, BSc, MD, AUSTRALIA Peter T. Myers, AM, MBBS, FRACS, FAOrthA, AUSTRALIA
Large Reduction In Postoperative Posterior Tibial Slope Risks Anterior Collapse Of The Tibial Component In Fixed-Bearing Unicompartmental Knee Arthroplasty ePoster Presentation Kazuhisa Hatayama, MD, PhD, JAPAN Masanori Terauchi, MD, JAPAN Shingo Kurihara, MD, JAPAN Satoshi Nonaka, MD, JAPAN Hibiki Kakiage, MD, JAPAN
Participation of Physical Activity Following Knee Arthroplasty: A Meta-Analysis ePoster Presentation Ahmed A Magan, BM BSc (Hons) MRCS (Eng) FRCS (Eng) Trauma & Orth, UNITED KINGDOM Babar Kayani, BSc (HONS), MBBS, MRCS (Eng), UNITED KINGDOM Warran Wignadasan, MBBS, BSc (Hons), MRCS, UNITED KINGDOM Dia Eldean Giebaly, MBChB, MSc, FRCS, EMBA, UNITED KINGDOM Flaminia Ronca, PHD, UNITED KINGDOM Fares S. Haddad, MCh(Orth), BSc, FRCS(Orth), UNITED KINGDOM
Golfers Have Greater Preoperative and Equal Postoperative Function When Undergoing Total Knee Arthroplasty Compared to Non-Golfers ePoster Presentation Patrick G Robinson, MBChB, MRCS, MS, MBA, UNITED KINGDOM Robert Kay, MBChB, UNITED KINGDOM Deborah Macdonald, BA(Hons), UNITED KINGDOM Andrew Murray, MBChB, FFSEM, UNITED KINGDOM Nick David Clement, MBBS, MD, PhD, FRCS(Orth), UNITED KINGDOM
Comparison of Outcomes between Fungal and Non-fungal Periprosthetic Joint Infections in Total Knee Arthroplasty: A Propensity Score-Matched Analysis ePoster Presentation Hong Yeol Yang, MD, PhD, KOREA, REPUBLIC OF Jong-Keun Seon, MD, PhD, Prof, KOREA, REPUBLIC OF
Novel Technique For Surgeon-Placed Nerve Block And Continuous Nerve Block In Total Knee Arthroplasty. A Cadaveric Study ePoster Presentation Daniel E Matthews, MD, FAAOS, UNITED STATES

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Lateral Unicompartmental Knee Arthroplasty (UKA) Showed a Lower Risk of Failure Compared to Medial Unicompartmental Knee Arthroplasty in the Register of Prosthetic Orthopedic Implants (RIPO)

Lateral Unicompartmental Knee Arthroplasty (UKA) Showed a Lower Risk of Failure Compared to Medial Unicompartmental Knee Arthroplasty in the Register of Prosthetic Orthopedic Implants (RIPO)

Introduction

Materials And Methods

Results

Conclusions

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Lateral Unicompartmental Knee Arthroplasty (UKA) Showed a Lower Risk of Failure Compared to Medial Unicompartmental Knee Arthroplasty in the Register of Prosthetic Orthopedic Implants (RIPO)

Lateral Unicompartmental Knee Arthroplasty (UKA) Showed a Lower Risk of Failure Compared to Medial Unicompartmental Knee Arthroplasty in the Register of Prosthetic Orthopedic Implants (RIPO)

Introduction

Materials And Methods

Results

Conclusions

More 2023 ISAKOS Congress Content