Intraoperative loose flexion gap may restrict postoperative knee flexion after J-curve design posterior-stabilized total knee arthroplasty.
Eur J Orthop Surg Traumatol
; 30(1): 147-151, 2020 Jan.
Article
em En
| MEDLINE
| ID: mdl-31456033
ABSTRACT
INTRODUCTION:
Although soft tissue tension during total knee arthroplasty (TKA) has been targeted to achieve equal flexion and extension gaps, such a perfect gap is not always obtained. This study was performed to investigate the impact of difference between flexion and extension gaps on postoperative knee flexion angle. MATERIALS ANDMETHODS:
We reviewed 107 consecutive TKAs using a J-curve design posterior-stabilized prosthesis. Soft tissue tension was measured intraoperatively using an offset-type tensor under 30 lb force of joint distraction with the patella reduced. All TKAs were performed in a uniform manner including the subvastus approach and without use of a pneumatic tourniquet. We assessed the association between knee flexion angle 1 year after TKA and the difference between flexion and extension gaps using Pearson's product-moment correlation and multiple regression analysis with age, sex, body mass index, diagnosis, history of diabetes mellitus, preoperative flexion angle, and gap difference as explanatory variables.RESULTS:
The difference between flexion and extension gaps showed a slight negative correlation with postoperative knee flexion angle in univariate analysis (r = - 0.20, 95% CI, - 0.38 to - 0.01, p = 0.04). Multiple regression analysis showed that the gap difference was an independent factor associated with postoperative knee flexion angle (ß = - 0.89, 95% CI, - 1.60 to - 0.18, p = 0.01).CONCLUSIONS:
The difference between flexion and extension gaps was negatively correlated with postoperative knee flexion angle. Looser flexion gap compared with extension gap should be avoided in J-curve design posterior-stabilized TKA.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Monitorização Intraoperatória
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Amplitude de Movimento Articular
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Artroplastia do Joelho
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Osteoartrite do Joelho
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Artrometria Articular
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Instabilidade Articular
Tipo de estudo:
Diagnostic_studies
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Etiology_studies
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Aged80
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Female
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Humans
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Male
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article