The Effect of Patellar Button Placement and Femoral Component Design on Patellar Tracking in Total Knee Arthroplasty

Yoshii, Ichiro; Whiteside, Leo A.; Anouchi, Yoel S.

doi:10.1097/00003086-199202000-00031

Cited by 112 publications

(59 citation statements)

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“…The preresection thickness of the patella was measured in all cases and the patellar resection performed with a specialized cutting jig designed to create a composite thickness of the patellar component and the remaining patellar bone that duplicated the native patella thickness. All patella components were positioned to reproduce the position of the native patella high point as described by Yoshii et al [33] whenever possible.…”

Section: Methodsmentioning

confidence: 99%

Lateral Retinacular Release Rates in Mobile- versus Fixed-bearing TKA

Yang

McFadden

Dennis

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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Controversy exists as to whether bearing mobility facilitates centralization of the extensor mechanism after TKA. To assess the incidence of lateral retinacular release, we retrospectively reviewed 1318 consecutive primary TKAs (1032 patients) performed by one surgeon using either a rotating-platform bearing (940) or a fixed bearing (378) from the same implant system. The selection of a fixed-versus mobile-bearing TKA was primarily based on age with patients younger than 70 years receiving a mobile-bearing TKA. We performed a lateral release whenever continuous symmetric patellar facet contact with the trochlear groove from 0°to 90°of flexion was not obtained using the rule of no thumb after tourniquet release. One hundred four of 1318 knees (7.9%) had a lateral release. We performed more lateral releases in the fixed-bearing group (14.3% [54 of 378]) than in the mobile-bearing group (5.3% [50 of 940]). Patellar tilt occurred more often in the mobile-bearing group (10% [94 of 940]) than in the fixed-bearing group (6.9% [26 of 378]), although the magnitude of mean patellar tilt was small in both groups (mobile-bearing 3.0°; fixed bearing 2.55°). No patient had patellar subluxation greater than 5 mm. We suspect the fewer lateral releases in the mobile-bearing group is the result of better extensor mechanism centralization provided by bearing rotation. Level of Evidence: Level III, prognostic study. See the Guidelines for a complete description of levels of evidence.

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Section: Methodsmentioning

confidence: 99%

Lateral Retinacular Release Rates in Mobile- versus Fixed-bearing TKA

Yang

McFadden

Dennis

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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“…The patella was resurfaced in all cases with an inset patellar component centered on the median ridge [20]. The patella was cut freehand; and the edges of the resection were sloped, effectively removing osteophytes.…”

Section: Methodsmentioning

confidence: 99%

A Technique of Staged Lateral Release to Correct Patellar Tracking in Total Knee Arthroplasty

Strachan

Merican

Devadasan³

et al. 2009

The Journal of Arthroplasty

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“…In addition, it is now established that a more anatomic trochlear design can reduce patellofemoral complications [29]. These design changes include lateral orientation of the trochlear groove, a prolonged and deepened intercondylar notch, and high lateral flange [17,[30][31][32][33]. The high lateral flange and deep constrained groove theoretically provide centralizing forces to contain the patella.…”

Section: Biomechanicsmentioning

confidence: 99%

“…Once an equalized surface is created, the patellar-sizing template is placed on the freshly cut surface. The goal is to place the trial as medial as possible without overhanging [15,31,50]. In addition, superior placement of the patellar component minimizes patellar clunk and catching in the inter-condylar region [50].…”

Section: Operative Technique For Resurfacing the Patellamentioning

confidence: 99%

The patella in total knee arthroplasty: to resurface or not is the question

Abdel

Parratte

Budhiparama³

2014

Curr Rev Musculoskelet Med

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The decision to resurface the patella during total knee arthroplasty remains controversial. Even though some surgeons routinely resurface the patella to avoid the increased rates of postoperative anterior knee pain and reoperation for secondary resurfacing, others selectively resurface based on the presence of anterior knee pain, notably damaged articular cartilage, inflammatory arthritis, isolated patellofemoral arthritis, and patellar subluxation and maltracking. The anatomy and biomechanics of the patellofemoral joint, combined with advances in surgical technique and prostheses must be taken into account when making a decision to resurface the patella. Accurate component implantation is imperative for a successful outcome if the patella is resurfaced.

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The Effect of Patellar Button Placement and Femoral Component Design on Patellar Tracking in Total Knee Arthroplasty

Cited by 112 publications

References 0 publications

Lateral Retinacular Release Rates in Mobile- versus Fixed-bearing TKA

Lateral Retinacular Release Rates in Mobile- versus Fixed-bearing TKA

A Technique of Staged Lateral Release to Correct Patellar Tracking in Total Knee Arthroplasty

The patella in total knee arthroplasty: to resurface or not is the question

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