Evidence map›Paper›PMID 30317523›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2019

Insall-Salvati ratio stabilizes one year after mobile-bearing total knee arthroplasty and does not correlate with mid-to-long-term clinical outcomes.

Yoshinori Ishii, Hideo Noguchi, Junko Sato, Hana Ishii, Nobukazu Ezawa, Shin-Ichi Toyabe

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Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

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4citing papers in PubMed
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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

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3 · Its place in the literature

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4 citing papers in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Yoshinori IshiiIshii Orthopaedic and Rehabilitation Clinic, 1089 Shimo-Oshi, Gyoda, Saitama, 361-0037, Japan. ishii@sakitama.or.jp.
Hideo NoguchiIshii Orthopaedic and Rehabilitation Clinic, 1089 Shimo-Oshi, Gyoda, Saitama, 361-0037, Japan.
Junko SatoIshii Orthopaedic and Rehabilitation Clinic, 1089 Shimo-Oshi, Gyoda, Saitama, 361-0037, Japan.
Hana IshiiKouseiren Takaoka Hospital, 5-10 Eirakutyo Takaoka, Toyama, 933-8555, Japan.
Nobukazu EzawaIshii Orthopaedic and Rehabilitation Clinic, 1089 Shimo-Oshi, Gyoda, Saitama, 361-0037, Japan.
Shin-Ichi ToyabeNiigata University Crisis Management Office, Niigata University Graduate School of Medical and Dental Sciences, Niigata University Hospital, 1 Asahimachi Dori Niigata, Niigata, 951-8520, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIt has not been established whether changes in the length of the patellar tendon (LPT) after total knee arthroplasty (TKA) affect clinical outcomes. Therefore, this prospective cohort study aimed to evaluate changes in the LPT over time postoperatively and clarify their impact on clinical outcomes after bilateral TKA, performed with differently designed mobile-bearing (meniscal-bearing and rotating-platform) implants on contralateral knees.

methods51 patients who required staged bilateral mobile-bearing TKA were recruited. LPT was evaluated by measuring the Insall-Salvati ratio (ISR) preoperatively and at 1 week, 6 months, and 1, 2, and ≥ 5 years postoperatively. Hospital for Special Surgery score and range of motion were assessed at the final follow-up.

resultsBased on the ISR, there were no differences in the patterns of change between the two types of implant (n.s.). At the 6-month follow-up, the ISRs of both implants had significantly decreased (p = 0.002). Throughout the follow-up, the ISR was significantly lower (p < 0.001) for the meniscal-bearing knees than for the rotating-platform knees. After the 1-year follow-up, there were no further substantial changes in the ISR in either group. There was also no significant correlation between the ISR and clinical outcomes.

conclusionsLPT decreased after both mobile-bearing TKAs for up to 1 year postoperatively, although the decrease was more significant for the meniscal-bearing knees than the rotating-platform knees. After 1 year postoperatively, however, these conditions had stabilized, with no further changes. Thus, LPT plays a minimal role in mid-to-long-term clinical outcomes after TKA. LEVEL OF EVIDENCE: Therapeutic prospective study, Level II.

Indexed as

Arthroplasty, Replacement, KneeKnee ProsthesisAgedAged, 80 and overFemaleHumansKnee JointMaleMeniscusMiddle AgedOsteoarthritis, KneePatellar LigamentPostoperative PeriodProspective StudiesProsthesis DesignRange of Motion, ArticularHospital for Special Surgery scoreInsall–Salvati ratioMobile-bearing TKAPatellar tendon lengthRange of motion

Identifiers

PMID30317523

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.