scholarly journals A dislocated mobile bearing from a unicondylar knee replacement – a complication not to be missed

2010 ◽  
Vol 92 (1) ◽  
pp. e8-e9 ◽  
Author(s):  
D Thavarajah ◽  
A Davies
Keyword(s):  
Knee Replacement ◽  
Mobile Bearing ◽  
Unicondylar Knee Replacement ◽  
Initial Radiograph

A case is described of a dislocated mobile bearing from a unicondylar knee replacement missed on initial radiograph examination. It is important to identify this complication early to eliminate pain and prevent premature prosthesis and peri-articular destruction.

MAKOPLASTY MEDIAL UNICONDYLAR KNEE REPLACEMENT: CORRECTION OR POSTOPERATIVE ANGLE MATTERS?

2021 ◽  
Author(s):  
Abhishek Kumar ◽  
D Ortho ◽  
Chih‐Hung Hung ◽  
Shang‐Lin Hsieh ◽  
Chien‐Chung Kuo ◽  
...  
Keyword(s):  
Knee Replacement ◽  
Unicondylar Knee Replacement

Mobility and Stability of the Intact and Replaced Knee

2015 ◽  
Author(s):  
John Goodfellow ◽  
John O'Connor ◽  
Hemant Pandit ◽  
Christopher Dodd ◽  
David Murray
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Final Section ◽  
Sagittal Plane ◽  
Polyethylene Wear ◽  
Mobile Bearing ◽  
Theoretical Background ◽  
Cruciate Retaining ◽  
Prosthetic Knee ◽  
Total Knee

Having demonstrated in Chapter 2 that a fully conforming mobile bearing can minimise polyethylene wear, in this chapter we show that a mobile bearing prosthesis, unconstrained in the sagittal plane, can restore natural mobility and stability. For surgeon readers who are less interested in the theoretical background, it might be advisable to go straight to Chapter 4, Indications, or to start by reading the final section of this chapter, The Loaded Prosthetic Knee. If that proves interesting, the surgeon might attempt The Unloaded Prosthetic Knee. For the more research minded surgeon or engineer, it seems more logical to start with the Unloaded Natural Knee (the longest section of the chapter) and to read from there. The chapter may also be of interest to those surgeons embarking on the use of a bi-cruciate retaining total knee replacement.

Mobile-Bearing Knee Replacement

2000 ◽  
Vol 82 (7) ◽  
pp. 1020-1041 ◽  
Author(s):  
JOHN J. CALLAGHAN ◽  
JOHN N. INSALL ◽  
A. SETH GREENWALD ◽  
DOUGLAS A. DENNIS ◽  
RICHARD D. KOMISTEK ◽  
...  
Keyword(s):  
Knee Replacement ◽  
Mobile Bearing

scholarly journals An Unusual Presentation of Insert Dislocation and MCL Rupture in Unicompartmental Knee Replacement with 2 Years Postoperative Results: Does It Functional?

2019 ◽  
Vol 2019 ◽  
pp. 1-5 ◽  
Author(s):  
Ali Asma ◽  
Mehmet Erduran ◽  
Musa Eymir
Keyword(s):  
Quality Of Life ◽  
Pain Intensity ◽  
Knee Replacement ◽  
Functional Capacity ◽  
Primary Repair ◽  
Mobile Bearing ◽  
Unicompartmental Knee Replacement ◽  
Unicompartmental Knee ◽  
Bearing Dislocation

According to our knowledge, there is no prior article that reports functional results of medial collateral ligament (MCL) primary repair and insert change after MCL rupture and mobile-bearing dislocation as a late complication of unicompartmental knee replacement (UKR). Firstly, 63-year-old woman was treated with UKR due to anteromedial knee osteoarthritis of the right knee joint. 1 year after UKR surgery, she suffered from MCL rupture and mobile-bearing dislocation because of falls while getting on a public bus, and therefore, secondly, she was operated with MCL primary repair and mobile-bearing change and followed up for 2 years. The patient was evaluated regarding functional capacity, pain intensity, range of motion (RoM), and quality of life. Our case showed an improvement in the functional level and the other outcomes (pain intensity and quality of life) at postoperative 2nd year when compared to the preoperative period. The wellbeing of our case in about the postop 2nd year functional capacity and also other outcomes after revision surgery prompted us to continue to this surgery approach in the surgical management of similar cases that may arise thereafter.

scholarly journals A Technical Tip to Avert Meniscal Rotation and Dislocation in a Mobile Bearing Unicompartmental Knee Arthroplasty

2020 ◽  
Vol 3 (1) ◽  
pp. 42-48
Author(s):  
Vijay Kumar ◽  
Mayur Nayak ◽  
Rajan Panthee ◽  
Rahul Yadav ◽  
Siddhartha Marendupaka
Keyword(s):  
Case Report ◽  
Surgical Technique ◽  
Blood Loss ◽  
Polyethylene Wear ◽  
Vertical Wall ◽  
Mobile Bearing ◽  
Common Complication ◽  
Unicondylar Knee Replacement ◽  
Tibial Cut ◽  
Bearing Dislocation

The Oxford (Oxford® partial knee; Biomet) mobile bearing medial unicondylar knee replacement (OUKR) is a preferred choice by surgeons due to minimal blood loss, reduced pain, and better range of motion. Commonly observed complications include aseptic loosening, polyethylene wear, bearing dislocation, and periprosthetic fractures. A bearing dislocation can be prevented by ensuring that there is correct tracking of bearing during the trial reduction as well as no loss of entrapment. We present a case report in a 50-year-old patient undergoing bilateral OUKR wherein it was observed that the meniscal bearing upon the flexion of the knee joint had the tendency to dislocate. Upon revising the vertical tibial recut according to the anterior superior iliac spine, the meniscus was found to have a normal excursion. Mobile bearing dislocation is a unique complication of mobile bearing OUKR. Surgical technique is of paramount importance in ensuring a successful OUKR. The vertical tibial cut is made to accommodate the vertical wall of the tibial component. Meniscal displacement is quite a common complication and can occur due to multiple causes. Inaccurate vertical tibial cut may be one such reason leading to tibial dislocation.

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