Minimally invasive unicompartmental knee replacement: Midterm clinical outcome

Autor: Jiangjun Liu, Chengzhi Ha, Yuanhe Wang, Wanqing Yuan, Lun Liu, Shaoqi Tian, Kang Sun, Xu Yang, Qicai Li
Rok vydání: 2017
Předmět:
Knees
medicine.medical_treatment
lcsh:Medicine
Knee Joints
Drug research and development
Osteoarthritis
Prosthesis
Clinical trials
0302 clinical medicine
Medicine and Health Sciences
lcsh:Science
Arthroplasty
Replacement
Knee
Musculoskeletal System
Prosthetics
030222 orthopedics
Multidisciplinary
Phase III clinical investigation
Treatment Outcome
Physical Sciences
Cements
Legs
Anatomy
Research Article
Biotechnology
musculoskeletal diseases
medicine.medical_specialty
WOMAC
Visual analogue scale
Materials Science
Surgical and Invasive Medical Procedures
03 medical and health sciences
Musculoskeletal System Procedures
Rheumatology
Arthropathy
Binders
medicine
Humans
Minimally Invasive Surgical Procedures
Survival rate
Materials by Attribute
Pharmacology
Varus deformity
Joint Replacement Surgery
business.industry
Arthritis
lcsh:R
Limbs (Anatomy)
Biology and Life Sciences
030229 sport sciences
medicine.disease
Arthroplasty
United Kingdom
Surgery
Research and analysis methods
Assistive Technologies
Joints (Anatomy)
Clinical medicine
lcsh:Q
Medical Devices and Equipment
business
Zdroj: PLoS ONE
PLoS ONE, Vol 12, Iss 5, p e0176082 (2017)
ISSN: 1932-6203
Popis: Objective The purpose of this study was to explore the midterm clinical outcomes of unicompartmental knee replacement (UKR) for medial knee arthropathy through a minimally invasive approach (MIA). Methods From January 2006 to June 2010, 442 consecutive patients (485 knees) were included in the study. All patients underwent MIA-UKR with the mobile bearing Oxford phrase III prosthesis. The incision was made starting 1 cm medial to the medial pole of the patella and extending distally to the tibial tubercle. Radiographic evaluations include femorotibial angle (FTA) from coronal x-rays and rectified varus deformity angle, while clinical evaluations included Knee Society Score (KSS, clinical score and function score), the Western Ontario and McMaster Universities Arthritis Index (WOMAC) osteoarthritis index and visual analog scale (VAS) for pain. Patients followed-up at 1, 3, 6, 12 months after surgery and each year thereafter. Results Four hundreds and two patients completed the entire follow-up, 40 patients (45 knees) were lost to follow-up. The average follow-up time was 73.0 ± 1.9 months. The mean length of the incisions was 5.0 ± 0.2 cm. The average FTA decreased from 183.6° ± 5.1° preoperatively to 174.3° ± 4.2° postoperatively, and the mean rectified varus deformity angle was 9.3° ± 1.2°. The KSS clinical score improved from 42.4 ± 2.9 to 92.9 ± 3.8, and the function score improved from 53.5 ± 3.8 to 93.5 ± 4.0. The WOMAC score improved from 47.5 ± 3.1 preoperatively to 12.3 ± 1.5 at the last evaluation. The VAS dropped from 7.8 ± 1.9 preoperatively to 1.6 ± 0.2 postoperatively. All clinical evaluations (KSS, WOMAC, VAS) were significantly different (p < 0.05) from pre and post-operative evaluations. The survival rate was 99.1% at 73 months, and the revision rate was 0.9%. Conclusion The midterm clinical outcomes of MIA-UKR are satisfactory in a Chinese patient population, which is a good surgical option for patients with medial arthropathy of the knee. However, longer-term follow-up studies should be performed in these patients.
Databáze: OpenAIRE
Externí odkaz: