The Results of Oxford Unicompartmental Knee Arthroplasty in Patients With and Without Preoperative Genu Recurvatum

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

104 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-01-31

Study Completion Date

2015-04-30

Brief Summary

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The purpose of this study is to explore the effects of the Oxford unicompartmental knee arthroplasty on two groups of patients, namely one with genu recurvatum before the procedure and one without. Specifically, this study compare the number of occurrences of postoperative genu recurvatum and the postoperative hyperextension angles among the patients. Additionally, the knee scores, the pain scores, and the functional scores for the two groups of patients are compared.

Materials and methods: This study prospectively followed 104 patients (114 knees) who had been treated with cemented minimally invasive surgery unicompartmental knee arthroplasty and had had a minimum of 24 months of follow-up. The patients were divided into two groups: those without preoperative genu recurvatum (85 patients; 94 knees) and those with preoperative genu recurvatum (19 patients; 20 knees). The incidence of the postoperative genu recurvatum, the postoperative hyperextension angles, the knee scores, the pain scores, and the functional scores were recorded and compared between two groups..

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Detailed Description

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The patients in both groups were applied with cemented Oxford unicompartmental knee arthroplasty with the same surgeon. The all patients were performed surgery with minimally invasive surgery technique. The gender, site, range of motion, alignment of prosthesis, operative time, blood loss, and posterior slope of tibial component also were recorded and compared between two groups. The incidence of postoperative genu recurvatum, gender, and site were computed using Fisher's exact test. The hyperextension angle, knee score, pain score, functional score,range of motion, alignment of prosthesis, posterior slope of tibial component, operative time, and blood loss were compared with student t-test.

Conditions

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Primary Gonarthrosis Genu Recurvatum

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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patients with genu recurvatum

The medial osteoarthritis knees with genu recurvatum were included in this study. Patients had been treated with cemented minimally invasive surgery Oxford unicompartmental knee arthroplasty and had had a minimum of 24 months of follow-up.The incidence of postoperative genu recurvatum, postoperative hyperextension angle, and the knee society score were recorded.

Group Type OTHER

Oxford unicompartmental knee arthroplasty

Intervention Type DEVICE

The Oxford unicompartmental knee arthroplasty was applied in all patients with medial osteoarthritis knee.The Oxford unicompartmental knee arthroplasty is mobile bearing unicompartmental knee arthroplasty.

patients without genu recurvatum

The medial osteoarthritis knees without genu recurvatum were included in this study. Patients had been treated with cemented minimally invasive surgery Oxford unicompartmental knee arthroplasty and had had a minimum of 24 months of follow-up.The incidence of postoperative genu recurvatum, postoperative hyperextension angle, and the knee society score were recorded.

Group Type OTHER

Oxford unicompartmental knee arthroplasty

Intervention Type DEVICE

The Oxford unicompartmental knee arthroplasty was applied in all patients with medial osteoarthritis knee.The Oxford unicompartmental knee arthroplasty is mobile bearing unicompartmental knee arthroplasty.

Interventions

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Oxford unicompartmental knee arthroplasty

The Oxford unicompartmental knee arthroplasty was applied in all patients with medial osteoarthritis knee.The Oxford unicompartmental knee arthroplasty is mobile bearing unicompartmental knee arthroplasty.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* The medial OA knee with older than 40 years of age, ROM greater than 90°, varus deformity less than 25°, and flexion contractures less than 20°

Exclusion Criteria

* patients who were diagnosed spontaneous osteonecrosis of knee (SPONK), patients with intraoperative ACL insufficiency, post traumatic arthritis, gouty arthritis, inflammatory joints.

Minimum Eligible Age

40 Years

Maximum Eligible Age

90 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No