Functional relevance of patellofemoral thickness before and after unicompartmental patellofemoral replacement

Mofidi, A.; Bajada, Stefan; Holt, M.D.; Davies, Andrew

doi:10.1016/j.knee.2011.03.002

Cited by 21 publications

(20 citation statements)

References 18 publications

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“…Our results support those of earlier At present, there is a lack of consensus as to the best radiological technique for assessing the PFJ pre-operatively, or how to identify those at risk of progression of disease. 28,29 In our revised cases we found evidence of progression of tibiofemoral disease or other occult pathology that had been originally overlooked. We would therefore suggest that standardised pre-operative radiographs must include weight-bearing AP, lateral, and a patellofemoral tangential view, which would allow evaluation of both tibiofemoral disease and trochlear dysplasia.…”

Section: Discussionmentioning

confidence: 78%

Early revisions of the Femoro-Patella Vialla joint replacement

Williams

Pandit

Athanasou

et al. 2013

The Bone & Joint Journal

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The aim of this study was to review the early outcome of the Femoro-Patella Vialla (FPV) joint replacement. A total of 48 consecutive FPVs were implanted between December 2007 and June 2011. Case-note analysis was performed to evaluate the indications, operative histology, operative findings, post-operative complications and reasons for revision. The mean age of the patients was 63.3 years (48.2 to 81.0) and the mean follow-up was 25.0 months (6.1 to 48.9). Revision was performed in seven (14.6%) at a mean of 21.7 months, and there was one re-revision. Persistent pain was observed in three further patients who remain unrevised. The reasons for revision were pain due to progressive tibiofemoral disease in five, inflammatory arthritis in one, and patellar fracture following trauma in one. No failures were related to the implant or the technique. Trochlear dysplasia was associated with a significantly lower rate of revision (5.9% vs 35.7%, p = 0.017) and a lower incidence of revision or persistent pain (11.8% vs 42.9%, p = 0.045). Focal patellofemoral osteoarthritis secondary to trochlear dysplasia should be considered the best indication for patellofemoral replacement. Standardised radiological imaging, with MRI to exclude overt tibiofemoral disease should be part of the pre-operative assessment, especially for the non-dysplastic knee.

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Section: Discussionmentioning

confidence: 78%

Early revisions of the Femoro-Patella Vialla joint replacement

Williams

Pandit

Athanasou

et al. 2013

The Bone & Joint Journal

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“…However, in a previous report, the anterior femoral offset had no effect in the Knee Society pain score, WOMAC score, and Knee Injury and Osteoarthritis Outcome Score. 19,20 Hence, the method of cutting the patellar bone in this study is believed to have a little effect on the outcomes of this study. Third, results of this study were 1 year after TKA, and results of the early phase have not been examined.…”

Section: Discussionmentioning

confidence: 96%

Difference in patient-reported outcomes of various patellar component designs in total knee arthroplasty: A randomized clinical study

Mochizuki¹,

Yano

Ikari

et al. 2021

J Orthop Surg (Hong Kong)

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Purpose: This study investigated the clinical effects of different patellar components without being affected by the femoral component design in total knee arthritis (TKA) for patients with knee osteoarthritis (OA). Methods: In total, 48 patients with OA who met the criteria of the American College of Rheumatology for OA were enrolled and randomly assigned in a 1:1 ratio to two groups according to the usage of patellar component design for TKA (medialized dome type [dome group] or medialized anatomic type [anatomic group]). To evaluate the clinical outcomes for TKA, knee range of motion (ROM), pain intensity of 0–100 mm visual analog scale (pain VAS), and the Japanese Knee Osteoarthritis Measure (JKOM) score were obtained at baseline and year 1. Results: The difference in knee ROM, pain VAS, or total JKOM score at year 1 was not significant between the dome and anatomic groups ( p = 0.398, 0.733 and 0.536, respectively). Moreover, similar results were obtained for changes in knee ROM, pain VAS, or total JKOM scores from baseline. In both groups, the pain VAS and total JKOM scores were significantly improved at year 1. Conclusion: Both dome and anatomic groups in TKA are significantly effective for pain and function using the JKOM score. However, their efficacy did not differ, according to the JKOM score. Results of this study are rare information focusing on the patellar component design and provide one of the insights into the TKA clinical management.

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“…A recent study found that patients with the worst functional results had greater increase in patellar thickness following surgery. 14 Many authors reported excellent results after TKA for the treatment of isolated PF arthritis in elderly patients.…”

Section: Discussionmentioning

confidence: 99%

“…A recent study found that patients with the worst functional results had greater increase in patellar thickness following surgery. 14…”

Section: Discussionmentioning

confidence: 99%

Patellofemoral Joint Arthroplasty: Our Experience in Isolated Patellofemoral and Bicompartmental Arthritic Knees

Sabatini

Schirò²,

Atzori³

et al. 2016

Clin Med�Insights�Arthritis�Musculoskelet Disord

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INTRODUCTIONIsolated patellofemoral (PF) arthritis is rare, and there is no complete agreement about the best surgical treatment. The operative treatments are total knee arthroplasty and patellofemoral replacement (PFR). The incidence of many early complications of PF arthroplasty has decreased with the introduction of newer designs. Nowadays, the main cause of revision surgery is the progression of tibiofemoral osteoarthritis. In the past, PF arthroplasty was contraindicated in patients with evidence of osteoarthritis or pain in medial or lateral tibiofemoral compartments. The improvement in implant designs and surgical techniques has allowed the addition of a monocompartmental arthroplasty for the medial or lateral tibiofemoral compartment. In this work, we evaluate our first experience with PF arthroplasty and its combination with unicompartmental knee arthroplasty.MATERIALS AND METHODSFrom May 2014 to March 2016, we treated 14 patients. An isolated PF arthroplasty was performed in six knees (five patients), and a combined PF and unicompartmental knee arthroplasty was performed in nine cases. We observed a significant improvement in the clinical and functional Knee Society Scores (KSSs) after surgery in our patients.RESULTSWe obtained good results in our cases both for clinical and functional KSSs. Patellar clunk was recorded in one case.DISCUSSION AND CONCLUSIONWe are going toward a new attitude in which partial osteoarthritic changes could be treated with partial resurfacing prosthetic solutions such as unicompartmental, bi–unicompartmental or PFR alone, or unicompartmental combined, which respects the cruciates and achieves maximal bone preservation, which is vital, particularly, for young patients.

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Functional relevance of patellofemoral thickness before and after unicompartmental patellofemoral replacement

Cited by 21 publications

References 18 publications

Early revisions of the Femoro-Patella Vialla joint replacement

Early revisions of the Femoro-Patella Vialla joint replacement

Difference in patient-reported outcomes of various patellar component designs in total knee arthroplasty: A randomized clinical study

Patellofemoral Joint Arthroplasty: Our Experience in Isolated Patellofemoral and Bicompartmental Arthritic Knees

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