The development of this module has been sponsored by Zimmer Biomet. This module is only available in the US.
- Understand patient positioning with the Oxford® Leg Holder
- Demonstrate understanding of principle steps of the Oxford Microplasty® instrumentation and Oxford Partial Knee surgical procedure
- Patient Positioning
- Osteophyte Excision
- Tibial Plateau Resection
- Femoral Alignment
- Posterior Resection
- First Milling of the Femoral Condyle
- Equalizing the Flexion and Extension Gaps
- Confirming Equality of the Flexion and Extension Gaps
- Preventing Impingement
- Final Preparation of the Tibial Plateau
- Final Trial Reduction
- Cementing the Components
Positive selection factors to be considered include:
- ACL and PCL functionally intact.
- Cartilage and bone erosions limited to the anterior and middle parts of the medial compartment. The posterior part of the medial compartment and the lateral compartment having cartilage of normal thickness.
- Medial collateral ligament not structurally shortened (i.e. varus deformity correctable).
- Patellofemoral joint damage limited to (or greater on) the medial facets.
- Fixed flexion deformity of less than 15 degrees.
- Flexion possible to 110 degrees under anaesthetic.
- Need to obtain pain relief and improve function.
- Ability and willingness of the patient to follow instructions, including control of weight and activity level.
- A good nutritional state of the patient.
- The patient must have reached full skeletal maturity.
Identifying patients through radiographs:
- 4 X-rays
- Standing AP
- Identifies bone-on-bone in the medial compartment
- Identifies functionally intact ACL
- Look for: Retained posterior cartilage on the tibia
- Ensures if there is any patellofemoral wear that it is limited to (or greater on) the medial facet of the patellofemoral joint
- Valgus Stress
- Identifies full thickness cartilage in the lateral compartment
- Standing AP
The Oxford Partial Knee is intended for use in individuals with osteoarthritis or avascular necrosis limited to the medial compartment of the knee and is intended to be implanted with bone cement.
- Infection, sepsis, and osteomyelitis
- Use in the lateral compartment of the knee
- Rheumatoid arthritis or other forms of inflammatory joint disease
- Revision of a failed prosthesis, failed upper tibial osteotomy or post-traumatic arthritis after tibial plateau fracture
- Insufficiency of the collateral, anterior or posterior cruciate ligaments which would preclude stability of the device
- Full thickness damage to the weight bearing area of the lateral compartment of the knee
- Uncooperative patient or patient with neurologic disorders who are incapable of following directions
- Insufficient bone stock to provide adequate support and/or fixation to the prosthesis
- Metabolic disorders which may impair bone formation
- Distant foci of infections which may spread to the implant site
- Rapid joint destruction which may spread to the implant site
- Vascular insufficiency, muscular atrophy, neuromuscular disease
- Incomplete or deficient soft tissue surrounding the knee
- Charcot’s disease
- A fixed varus deformity (not passively correctable) greater than 15 degrees
- A fixed flexion deformity (not passively correctable) greater than 15 degrees
Zimmer Biomet does not practice medicine. This perioperative plan is utilized by training surgeons. This simulation was developed in conjunction with experienced Oxford knee surgeons, and provides select instructions from the Oxford Partial Knee surgical technique. For complete instructions, refer to the surgical technique located at www.zimmerbiomet.com. Each surgeon is responsible for determining the appropriate device, technique and overall treatment for each individual patient. With respect to any pharmaceutical or other product, please consult the appropriate product labeling or other applicable sources. Please check for country product clearances and reference product specific instructions for use.
All trademarks herein are the property of Zimmer Biomet or its affiliates unless otherwise indicated. This material is intended for attendees at the Zimmer Biomet Advanced Instructional Course. It is not to be redistributed, duplicated or disclosed without the expressed written consent of Zimmer Biomet.
The content herein is based on the personal experience of the presenters. The Oxford Partial Knee is intended for use in individuals with osteoarthritis or avascular necrosis limited to the medial compartment of the knee and is intended to be implanted with bone cement. The Oxford Knee is not indicated for use in the lateral compartment or for patients with ligament deficiency. Potential risks include, but are not limited to, loosening, dislocation, fracture, wear, and infection, any of which can require additional surgery. For complete product information, including indications, contraindications, warnings, precautions and potential adverse effects, see the package insert and www.zimmerbiomet.com.
Oxford Legal Manufacturer:
Biomet UK Limited
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CF31 3XA United Kingdom