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1.
PLoS One ; 15(1): e0227975, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31968005

RESUMO

OBJECTIVES: Knee joint distraction (KJD) has been evaluated as a joint-preserving treatment to postpone total knee arthroplasty in knee osteoarthritis patients in three clinical trials. Since 2014 the treatment is used in regular care in some hospitals, which might lead to a deviation from the original indication and decreased treatment outcome. In this study, baseline characteristics, complications and clinical benefit are compared between patients treated in regular care and in clinical trials. METHODS: In our hospital, 84 patients were treated in regular care for 6 weeks with KJD. Surgical details, complications, and range of motion were assessed from patient hospital charts. Patient-reported outcome measures were evaluated in regular care before and one year after treatment. Trial patients (n = 62) were treated and followed as described in literature. RESULTS: Patient characteristics were not significantly different between groups, except for distraction duration (regular care 45.3±4.3; clinical trials 48.1±8.1 days; p = 0.019). Pin tract infections were the most occurring complication (70% regular care; 66% clinical trials), but there was no significant difference in treatment complications between groups (p>0.1). The range of motion was recovered within a year after treatment for both groups. WOMAC questionnaires showed statistically and clinically significant improvement for both groups (both p<0.001 and >15 points in all subscales) and no significant differences between groups (all differences p>0.05). After one year, 70% of patients were responders (regular care 61%, trial 75%; p = 0.120). Neither regular care compared to clinical trial, nor any other characteristic could predict clinical response. CONCLUSIONS: KJD as joint-preserving treatment in clinical practice, to postpone arthroplasty for end-stage knee osteoarthritis patient below the age of 65, results in an outcome similar to that thus far demonstrated in clinical trials. Longer follow-up in regular care is needed to test whether also long-term results remain beneficial and comparable to trial data.


Assuntos
Articulação do Joelho/cirurgia , Osteoartrite do Joelho/cirurgia , Osteogênese por Distração/métodos , Osteogênese por Distração/normas , Adulto , Antibacterianos/administração & dosagem , Artroplastia do Joelho , Cartilagem Articular/diagnóstico por imagem , Cartilagem Articular/fisiopatologia , Cartilagem Articular/cirurgia , Ensaios Clínicos como Assunto/normas , Fixadores Externos , Feminino , Humanos , Articulação do Joelho/diagnóstico por imagem , Articulação do Joelho/fisiopatologia , Masculino , Pessoa de Meia-Idade , Procedimentos Ortopédicos/normas , Osteoartrite do Joelho/diagnóstico por imagem , Osteoartrite do Joelho/epidemiologia , Osteoartrite do Joelho/fisiopatologia , Amplitude de Movimento Articular/fisiologia , Resultado do Tratamento
2.
Cartilage ; : 1947603519828432, 2019 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-30758214

RESUMO

OBJECTIVE: Both, knee joint distraction (KJD) and high tibial osteotomy (HTO) are joint-preserving surgeries that postpone total knee arthroplasty (TKA) in younger osteoarthritis (OA) patients. Here we evaluate the 2-year follow-up of KJD versus TKA and KJD versus HTO in 2 noninferiority studies. DESIGN: Knee OA patients indicated for TKA were randomized to KJD ( n = 20; KJDTKA) or TKA ( n = 40). Medial compartmental knee OA patients considered for HTO were randomized to KJD ( n = 23; KJDHTO) or HTO ( n = 46). Patient-reported outcome measures were assessed over 2 years of follow-up. The radiographic joint space width (JSW) was measured yearly. In the KJD groups, serum-PIIANP and urinary-CTXII levels were measured as collagen type-II synthesis and breakdown markers. It was hypothesized that there was no clinically important difference in the primary outcome, the total WOMAC, when comparing KJD with HTO and with TKA. RESULTS: Both trials were completed, with 114 patients (19 KJDTKA; 34 TKA; 20 KJDHTO; 41 HTO) available for 2-year analyses. At 2 years, the total WOMAC score (KJDTKA: +38.9 [95%CI 28.8-48.9] points; TKA: +42.1 [34.5-49.7]; KJDHTO: +26.8 [17.1-36.6]; HTO: +34.4 [28.0-40.7]; all: P < 0.05) and radiographic minimum JSW (KJDTKA: +0.9 [0.2-1.6] mm; KJDHTO: +0.9 [0.5-1.4]; HTO: +0.6 [0.3-0.9]; all: P < 0.05) were still increased for all groups. The net collagen type-II synthesis 2 years after KJD was increased ( P < 0.05). Half of KJD patients experienced pin tract infections, successfully treated with oral antibiotics. CONCLUSIONS: Sustained improvement of clinical benefit and (hyaline) cartilage thickness increase after KJD is demonstrated. KJD was clinically noninferior to HTO and TKA in the primary outcome.

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