Range Of Motion In Total Knee Arthroplasty Research Articles

Effects of patient-specific positioning guides (PSPGs) vs. conventional instrumentation on patient-reported outcome in total knee arthroplasty: secondary analysis of a randomized controlled trial after 5 years.

The use of patient-specific positioning guides (PSPGs) in total knee arthroplasty (TKA) has been advocated as a means of improving patient outcomes, but the reception of PSPGs has been mixed. The aim of our study was to compare patient-reported outcomes (KOOS, NRS-11, EQ-5D-3L, EQ-VAS) after TKA using PSPG with conventional instrumentation (CI) to determine whether there is a discernible clinical benefit to using PSPGs. This multicenter randomized controlled trial (RCT) followed 77 patients who were randomly assigned to 1 of 2 cohorts between September 2011 and January 2014-one receiving TKA with PSPGs (from Materialise NV) and one receiving TKA with CI-with each cohort followed up until 5 years after the operation. The Vanguard Cruciate Retaining Total Knee System and Refobacin Bone Cement R were used in all operations. KOOS was evaluated using confidence intervals, with differences of less than 10 KOOS units between the cohorts interpreted as indicating the absence of a clinically meaningful difference. No significant differences were found in any of the measured clinical outcomes-KOOS, NRS-11, EQ-5D-3L, EQ-VAS, range of motion, or radiolucent lines scoring-between the cohort operated on using PSPG and the cohort operated on using CI after 5 years of follow-up. There was no statistically significant effect of PSPGs on patient-reported outcomes or range of motion in TKA.

Factors determining the range of motion in primary total knee arthroplasty

<p class="abstract"><strong>Background:</strong> Total knee arthroplasty (TKA) ­­­­­­is one of the most successful surgical procedure with over 90% survival rate at 10 to 15 years. It provides a stable, pain free range of motion (ROM) for day to day activities. The aim of this study is to evaluate various factors determining ROM after TKA.</p><p class="abstract"><strong>Methods:</strong> 348 patients with 390 knees treated with TKA using cruciate retaining (CR) and posterior stabilized (PS) prosthesis were included and analysed. Mean follow up period was 18 months. Patients were analysed for factors like age, sex, diagnosis, body mass index (BMI), pre-operative exercises, ROM, deformity, posterior femoral condylar offset (PFCO), posterior tibial slope (PTS), post-operative rehabilitation and implant design (CR vs PS). Statistical analysis of above factors on knee ROM was done. Patients were assessed pre-operatively, at 6 weeks, 3, 6, 12 and 18 months post-operatively.<strong></strong></p><p class="abstract"><strong>Results:</strong> Age and sex did not affect the final ROM. The mean knee ROM improved from 86.87° to 96.95°. Factors like BMI, deformity had negative correlation and Pre-operative diagnosis, exercises, knee scores, good preoperative ROM, PFCO, PTS had positive correlation on ROM.</p><p class="abstract"><strong>Conclusions:</strong> Pre-operative exercises, diagnosis, ROM, deformity, BMI, PFCO and PTS were important factors which influence ROM in TKA. Patient selection and preoperative counselling are important for good clinical outcome.</p>

Factors Affecting Range of Motion after Total Knee Arthroplasty

Purpose: Restoration of range of motion (ROM) after total knee arthroplasty (TKA) greatly affects post-operative results. We analyzed various factors, including implant systems, to identify those factors affecting ROM in TKA. Materials and Methods: 645 knees of 418 patients who received TKA from the same operator between June 1990 and May 1999 were analyzed. Knees were sorted according to patient (age, sex, body mass index, symptom duration, pre-operative ROM, and deformity), disease (osteoarthritis, rheumatoid arthritis, and osteonecrosis), implant (implant system, and thickness of spacer), operation (preservation or resection of the posterior cruciate ligament (PCL), and lateral release or not). Post-operative ROM was evaluated with a minimum 3 years of follow-up. Results: Within 1 year after TKA, BMI, symptom duration, pre-opeative deformity, pre-operative ROM, and lateral release were found to significantly (p-value

Slide and Flex, Tighten, Extend (SAFTE): A Safe, Convenient, Effective, and No-Cost Approach to Rehabilitation After Total Knee Arthroplasty

Many of the clinical aspects of total knee arthroplasty (TKA) are now standardized; however, treatment protocols for rehabilitation vary according to surgeon and physical therapy departments. The purpose of this article was to determine if the slide and flex, tighten, extend (SAFTE) approach after TKA is a satisfactory method of achieving functional range of motion (full extension and at least 90° of flexion). Of patients in the study group, 70% achieved functional range of motion by the 7-week evaluation period. SAFTE is a safe, effective, and no-cost approach to achieve functional range of motion in TKA using a single-radius, posterior-stabilized knee prosthesis.