Retrospective Clinical and Radiological Outcomes after Robotic Assisted Bicompartmental Knee Arthroplasty

Purpose. Bicompartmental knee arthroplasty (BiKA) is a favorable alternative to total knee arthroplasty for degenerative disease limited to two knee compartments. Recently developed robotic-assisted systems improved the clinical efficacy of unicompartmental knee arthroplasty by providing enhanced component positioning with dynamic ligament balancing. The purpose of this study was to evaluate the short-term outcomes of patients, undergoing bicompartmental knee arthroplasty at a single institution by a single surgeon using a robotic-assisted system. It was hypothesized that robotic assisted BiKA is a prevailing choice for degenerative disease limited to two knee compartments with good functional results.Methods. A search of the institution’s joint registry was conducted to identify patients that underwent robotic-assisted BiKA of the patellofemoral compartment and the medial or lateral compartment.Results. A total number of 29 patients (30 BiKA) with a mean age of 63.6 years were identified who received a patellofemoral resurfacing in combination with medial or lateral compartment resurfacing. Twenty-four out of 29 patients had good to excellent outcome.Conclusion. Robotic assisted bicompartmental arthroplasty using broad indications and only excluding patients with severe deformity and those that have less than 4 mm of joint space in the surviving compartment demonstrated 83% good to excellent results.

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WITHDRAWN: The Congruence and Joint Space Width of the Lateral Compartment Can Be Restored After Medial Unicompartmental Knee Arthroplasty

The Journal of Arthroplasty ◽

10.1016/j.arth.2017.04.033 ◽

2017 ◽

Author(s):

Fei Cao ◽

Haibo Si ◽

Yi Zeng ◽

Canfeng Li ◽

Yuangang Wu ◽

...

Keyword(s):

Knee Arthroplasty ◽

Unicompartmental Knee Arthroplasty ◽

Joint Space Width ◽

Lateral Compartment ◽

Joint Space ◽

Unicompartmental Knee ◽

Medial Unicompartmental Knee Arthroplasty ◽

Space Width

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Effect of posterior cruciate ligament recession on knee joint pressure and joint space measured by an electronic pressure sensor during total knee arthroplasty

10.21203/rs.3.rs-53379/v1 ◽

2020 ◽

Author(s):

Ran Zhao ◽

Yanqing Liu ◽

Hua Tian

Keyword(s):

Total Knee Arthroplasty ◽

Knee Joint ◽

Knee Arthroplasty ◽

Cruciate Ligament ◽

Lateral Compartment ◽

Joint Space ◽

Electronic Pressure ◽

Total Knee ◽

Pressure Changes ◽

Flexion And Extension

Abstract Purpose: The purpose of this study was to evaluate the change in posterior cruciate ligament (PCL) tension by directly measuring the pressure changes in the knee joint when the ligament was released or resected during total knee arthroplasty (TKA).Methods: We prospectively analysed 22 patients who underwent primary TKA (28 knees) between October 2019 and January 2020. The pressure changes in the medial and lateral compartment were measured with an electronic pressure sensor with PCL retention (at 0°, 45°, 90° and 120° of flexion), tibial recession and PCL resection, and changes in the knee joint space were measured.Results: At 0°, 45°, 90° and 120° of flexion, the total pressure in the knee joint after tibial recession of the PCL was significantly higher than with PCL resection, and higher than PCL recession, but only at 120°. Recession or resection of the PCL affected knee joint extension, and the medial/lateral pressure in the knee joint decreased. Pressure in the lateral compartment showed no significant change, while pressure in the medial compartment decreased significantly during knee flexion, which also led to a change in the ratios of the medial and lateral pressures in the knee joint. After resecting the PCL, the mean flexion and extension gaps increased by 0.64 mm and 0.46 mm, respectively.Conclusion: Tibial recession of the PCL can release the PCL while retaining some PCL function. PCL release affects both the flexion and extension gaps, and more cases will increase the flexion gap.

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Medial unicompartmental knee arthroplasty improves congruence and restores joint space width of the lateral compartment

The Knee ◽

10.1016/j.knee.2016.02.012 ◽

2016 ◽

Vol 23 (3) ◽

pp. 501-505 ◽

Cited By ~ 15

Author(s):

Saker Khamaisy ◽

Hendrik A. Zuiderbaan ◽

Jelle P. van der List ◽

Denis Nam ◽

Andrew D. Pearle

Keyword(s):

Knee Arthroplasty ◽

Unicompartmental Knee Arthroplasty ◽

Joint Space Width ◽

Lateral Compartment ◽

Joint Space ◽

Unicompartmental Knee ◽

Medial Unicompartmental Knee Arthroplasty ◽

Space Width

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Quantitative Evaluation of Joint Space Width in the Lateral Compartment after Medial Unicompartmental Knee Arthroplasty: Comparison of Three Radiographic Views

The Journal of Knee Surgery ◽

10.1055/s-0037-1607059 ◽

2017 ◽

Vol 31 (08) ◽

pp. 730-735

Author(s):

Ju'an Yue ◽

Wanshou Guo ◽

Fuyin Wan ◽

Pengfei Wen ◽

Zhaohui Liu ◽

...

Keyword(s):

Knee Arthroplasty ◽

Weight Bearing ◽

Joint Space Width ◽

Lateral Compartment ◽

Joint Space ◽

Valgus Stress ◽

Medial Unicompartmental Knee Arthroplasty ◽

Group A ◽

Group B ◽

Space Width

AbstractLateral compartment cartilage deterioration is the most common complication affecting medial unicompartmental knee arthroplasty (UKA) survivorship. The purpose of this study was to determine the best method of judging the degeneration of cartilage in the lateral compartment after medial UKA through analysis of different radiographic views. Forty-two participants were divided into two groups. Patients in Group A were followed for at least 10 months after undergoing a medial UKA (mean: 17.67 ± 7.65 months, range: 10–24 months), whereas those in Group B were evaluated 3 days after surgery. Joint space width in the lateral compartment of all patients was evaluated using three types of knee radiographs: weight-bearing anterior posterior (AP), supine AP, and supine valgus stress. No difference in joint space width in the lateral compartment after medial UKA was found for the three kinds of radiographs in Group A (F = 0.97, p = 0.39) and Group B (F = 1.499, p = 0.233). After evaluating the patients 3 days after surgery or following them for approximately 18 months after medial UKA, we determined that weight-bearing AP, supine AP, and supine valgus stress knee radiographs were comparable when used to assess residual cartilage thickness of the lateral compartment.

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