Arthroplasty of the Knee

Crockarell, John R.; Guyton, James L.

doi:10.1016/b978-0-323-03329-9.50009-x

Cited by 8 publications

(14 citation statements)

References 436 publications

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“…The position of the previous component and the epicondylar axis are usually the only landmarks available for this assessment. 21 Using all available information to obtain correct femoral rotation is therefore essential to ensure optimal patellar tracking in the trochlear groove and to avoid patellofemoral complications. When this is achieved, it seems logical to assume that it would result in a lower rate of wear.…”

Section: Discussionmentioning

confidence: 99%

The influence of malrotation and femoral component material on patellofemoral wear during gait

Vanbiervliet¹,

Bellemans²,

Verlinden³

et al. 2011

The Journal of Bone and Joint Surgery. British volume

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Complications involving the patellofemoral joint, caused by malrotation of the femoral component during total knee replacement, are an important cause of persistent pain and failure leading to revision surgery. The aim of this study was to determine and quantify the influence of femoral component malrotation on patellofemoral wear, and to determine whether or not there is a difference in the rate of wear of the patellar component when articulated against oxidised zirconium (OxZr) and cobalt-chrome (CoCr) components. An in vitro method was used to simulate patellar maltracking for both materials. Both rates of wear and changes in height on the patellar articular surface were measured. The mean rates of wear measured were very small compared to standard tibiofemoral wear rates. When data for each femoral component material were pooled, the mean rate of wear was 0.19 mm3/Mcycle (sd 0.21) for OxZr and 0.34 mm3/Mcycle (sd 0.335) for CoCr. The largest change in height on each patella varied from -0.05 mm to -0.33 mm over the different configurations. The results suggest that patellar maltracking due to an internally rotated femoral component leads to an increased mean patellar wear. Although not statistically significant, the mean wear production may be lower for OxZr than for CoCr components.

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Section: Discussionmentioning

confidence: 99%

The influence of malrotation and femoral component material on patellofemoral wear during gait

Vanbiervliet¹,

Bellemans²,

Verlinden³

et al. 2011

The Journal of Bone and Joint Surgery. British volume

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“…60 Because of some concern over the extent of quadriceps weakness with this technique, other methods for accessing the knee have been developed, such as the subvastus approach, which uses a more medial incision ( Figure 5-14, A), and the midvastus approach, which splits the vastus medialis oblique fibers ( Figure 5-14, B). 60,[63][64][65] Patients who undergo knee arthroplasty may also have associated preoperative soft-tissue contractures. A lateral retinacular release can be performed to centralize patellar tracking.…”

Section: Knee Arthroplastymentioning

confidence: 99%

“…Complications after TKA include thromboembolism, infection, joint instability, fractures, patellar tendon rupture, patellofemoral instability, component failure or loosening, and peroneal nerve injury. 60 Physical Therapy after Knee Arthroplasty. As with all patients who are scheduled to have joint arthroplasty, physical therapy should begin before the surgery.…”

Section: Knee Arthroplastymentioning

confidence: 99%

“…The dorsal aspect of the patella is often resurfaced if excessive erosion of the cartilage has occurred; however, some surgeons refrain from the patellar implant if the articular cartilage of the patella seems reasonably intact, as shown in Figure 5-13, B. 60 Prosthesis systems used in knee arthroplasty vary depending on the extent of tissue damage, varus or valgus deformity, and joint laxity. Prostheses options include posterior cruciate ligament (PCL)-retaining (mild deformity) or PCL-substituting (more severe deformity), and fixed-bearing or mobile-bearing.…”

Section: Knee Arthroplastymentioning

confidence: 99%

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Musculoskeletal System

Elrod¹

2014

Acute Care Handbook for Physical Therapists

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“…17 The medial unloader knee brace is designed to create a valgus moment about the knee to counteract the varus moments in knees with medial-compartment OA. The above-cited clinical studies have shown some improvements in pain symptoms and function with the use of the unloader brace.…”

Section: Recommendations For the Use Of The Unloader Knee Bracementioning

confidence: 99%

Current Evidence and Clinical Applications of Therapeutic Knee Braces

Chew

Lew

Date

et al. 2007

American Journal of Physical Medicine &Amp; Rehabilitation

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Braces are commonly used for the management of musculoskeletal injuries. With improvements in design and application, the knee brace has gained recognition by many as a treatment and prevention modality. However, there exist many different categories of knee braces, leading to confusion among many end users. The theoretical basis of the mechanism of action of the unloader, prophylactic, patellofemoral, and functional knee braces are explained in this review. This article also provides an update on the various knee braces in terms of the clinical efficacy and appropriate prescription recommendations.

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Arthroplasty of the Knee

Cited by 8 publications

References 436 publications

The influence of malrotation and femoral component material on patellofemoral wear during gait

The influence of malrotation and femoral component material on patellofemoral wear during gait

Musculoskeletal System

Current Evidence and Clinical Applications of Therapeutic Knee Braces

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