When to Uni, When to CR, When to PS, When to PS Plus, When to Constraint a Knee: A Perspective

Description

This video by Anoop Jhurani presents a scientific perspective on selecting the appropriate level of constraint in knee arthroplasty, emphasizing the need to consider both market pressures and the specific medical needs of patients with osteoarthrosis of the knee. The discussion revolves around identifying the right cases for various types of knee implants: unicompartmental (uni), cruciate retaining (CR), posterior stabilized (PS), and others, including semiconstrained and hinge designs.



Key points covered include:

1. The differentiation in cases for uni versus total knee replacements, particularly when considering factors such as articular degeneration confined primarily to the medial compartment.

2. The importance of conducting a valgus stress X-ray to determine the condition of the knee, indicating whether a uni is appropriate if only cartilage loss has occurred in one compartment.

3. An analysis of each type of knee implant: when to choose CR over PS, the specifics of PS Plus, and the suitable use of semiconstrained and hinge knee designs in more complex cases.

4. Consideration of patient age and their anatomical features, such as ligament integrity and overall knee alignment, to determine the best surgical approach.

5. The impact of different implant designs on longevity and patient outcomes, particularly focusing on how preservation of the cruciate ligament can enhance joint stability and function post-surgery.



The presentation also details indications for tumor prostheses in situations where traditional methods may result in complications due to bone quality or existing fractures. Jhurani concludes by summarizing how to decide on the level of constraint based on individual patient needs, advocating for evidence-based decision-making in orthopedic practice.

DOI: 10.1302/3114-230030

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