Imaging patellar complications after knee arthroplasty

Melloni, Pietro; Valls, Rafael; Veintemillas, M. T.

doi:10.1016/j.ejrad.2007.04.018

Cited by 18 publications

(8 citation statements)

References 18 publications

(15 reference statements)

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“…There were no radiological signs of patellar osteonecrosis. 31 At one year of follow-up, 67 patients reported anterior knee pain, representing an overall incidence of 25.6% (95% CI 20 to 31). There were 25 patients in the intervention group and 42 in the control group with a respective incidence of 19.1% (95% CI 12 to 26) and 32.1% (95% CI 24 to 40) (p = 0.02).…”

Section: Resultsmentioning

confidence: 99%

A randomised, controlled trial of circumpatellar electrocautery in total knee replacement without patellar resurfacing

Jonbergen

Scholtes

Kampen

et al. 2011

The Journal of Bone and Joint Surgery. British volume

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The efficacy of circumpatellar electrocautery in reducing the incidence of post-operative anterior knee pain is unknown. We conducted a single-centre, outcome-assessor and patient-blinded, parallel-group, randomised, controlled trial to compare circumpatellar electrocautery with no electrocautery in total knee replacement in the absence of patellar resurfacing. Patients requiring knee replacement for primary osteoarthritis were randomly assigned circumpatellar electrocautery (intervention group) or no electrocautery (control group). The primary outcome measure was the incidence of anterior knee pain. A secondary measure was the standardised clinical and patient-reported outcomes determined by the American Knee Society scores and the Western Ontario and McMaster Universities (WOMAC) osteoarthritis index. A total of 131 knees received circumpatellar electrocautery and 131 had no electrocautery. The overall incidence of anterior knee pain at follow-up at one year was 26% (20% to 31%), with 19% (12% to 26%) in the intervention group and 32% (24% to 40%) in the control group (p = 0.02). The relative risk reduction from electrocautery was 40% (9% to 61%) and the number needed to treat was 7.7 (4.3 to 41.4). The intervention group had a better mean total WOMAC score at follow-up at one year compared with the control group (16.3 (0 to 77.7) versus 21.6 (0 to 76.7), p = 0.04). The mean post-operative American Knee Society knee scores and function scores were similar in the intervention and control groups (knee score: 92.4 (55 to 100) versus 90.4 (51 to 100), respectively (p = 0.14); function score: 86.5 (15 to 100) versus 84.5 (30 to 100), respectively (p = 0.49)). Our study suggests that in the absence of patellar resurfacing electrocautery around the margin of the patella improves the outcome of total knee replacement.

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Section: Resultsmentioning

confidence: 99%

A randomised, controlled trial of circumpatellar electrocautery in total knee replacement without patellar resurfacing

Jonbergen

Scholtes

Kampen

et al. 2011

The Journal of Bone and Joint Surgery. British volume

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“…Some studies have found that patellofemoral complications after total knee arthroplasty are associated with the use of the patellar component [1]- [3]. These complications include fracture and patellar component loosening [1]- [5] [10]. Patellar complications after knee arthroplasty are uncommon but often potentially serious.…”

Section: Discussionmentioning

confidence: 99%

Ablation of a Patellar Button by Arthroscopy

Traoré¹,

Christophe²,

Leopoldo³

et al. 2015

OJO

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Fracture of the patella after total knee arthroplasty is an infrequent complication. In the presence of poor remaining bone stock, avascular necrosis, removal of the implant with partial or complete patellectomy is recommended. Arthroscopic removal of a loose body or cement extrusion has been recently attempted successfully in very few cases, where loose and mobile cement fragments were involved and were often removed piecemeal. The authors experienced an unusual case of a patient a 69-year-old woman who, after having fallen down, presented a comminuted patellar fracture. We recommended an external orthosis and a temporary limitation of activity. Four months later, the patient complained. An X-ray revealed a necrosis of the proximal fragment and a lowering of the patellar button with the distal bone fragment. The removal of the patellar button was performed by arthroscopy. Conservative treatment can be successful for this patients and the removal of the patellar button loosening via arthroscopy appears to be an attractive technique to be used in similar cases.

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“…86 Patellar fractures are most commonly horizontal or vertical. 89 Classification is based on whether there is involvement of the patellar component and whether the extensor mechanism is intact. Ultrasound is helpful in examining whether the extensor mechanism is intact in TKA.…”

Section: Fracture and Dislocationmentioning

confidence: 99%

Update on Imaging of Knee Arthroplasties: Normal Findings and Hardware Complications

Mar

Tan²,

Song

et al. 2019

Semin Musculoskelet Radiol

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Total knee arthroplasty (TKA) is the most common joint replacement performed. This article reviews the normal appearance of TKA including the most common types of arthroplasties as well as complications. Common complications at the present time are infection, aseptic loosening, and instability. Rarer complications such as polyethylene wear, periprosthetic fracture, and soft tissue pathology are also discussed. Although the mainstay of imaging is radiographs, newer techniques in TKA imaging such as computed tomography and magnetic resonance imaging are also reviewed.

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Imaging patellar complications after knee arthroplasty

Cited by 18 publications

References 18 publications

A randomised, controlled trial of circumpatellar electrocautery in total knee replacement without patellar resurfacing

A randomised, controlled trial of circumpatellar electrocautery in total knee replacement without patellar resurfacing

Ablation of a Patellar Button by Arthroscopy

Update on Imaging of Knee Arthroplasties: Normal Findings and Hardware Complications

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