scholarly journals The effect of restored medial knee anatomy in total knee arthroplasty with the flexion first balancer technique on mid-flexion laxity and functional outcome

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
W. A. M. van Lieshout ◽  
I. van Oost ◽  
K. L. M. Koenraadt ◽  
L. H. G. J. Elmans ◽  
R. C. I. van Geenen
Keyword(s):  
Total Knee Arthroplasty ◽  
Functional Outcome ◽  
Knee Arthroplasty ◽  
Cross Sectional Study ◽  
Joint Line ◽  
Peak Force ◽  
X Rays ◽  
Cross Sectional ◽  
Coronal Laxity ◽  
Total Knee

Abstract Background The Flexion First Balancer (FFB) technique for total knee arthroplasty (TKA) was developed to maintain the isometry of the medial collateral ligament (MCL) by restoring the medial anatomy of the knee. Inability to correct MCL isometry could hypothetically result in an increased mid-flexion laxity. The aim of the current study was to evaluate if the FFB technique results in improved functional outcome and less mid-flexion laxity compared to Measured Resection (MR). Methods A cross-sectional study was performed comparing 27 FFB patients with 28 MR patients. Groups were matched for age, gender, BMI and ASA classification. All patient received the cruciate retained type, Vanguard Complete Knee System (Biomet Orthopedics, Warsaw, IN, USA). Stress X-rays of the knee with 30 degrees of flexion were made to assess varus-valgus laxity. Furthermore, three tests were conducted to asses functional outcome: a 6 min walk test, a stair climb test and quadriceps peak force measurements. Mean follow-up was respectively 2.6 (SD 0.4) and 3.9 years (SD 0.2). Results The MR group showed a postoperative elevation in joint line in contrast to the FFB group, the mean difference between the two groups was 3 mm (p < 0.001). No differences in total laxity between the two groups was found. The FFB group showed a higher quadriceps peak force (1.67 (SD 0.55) N/BMI) in comparison with the MR group (1.38 (SD 0.48) N/BMI) (p < 0.05). All other outcome parameters were comparable between the two groups (p: n.s.). Correlation analysis showed a moderate negative correlation between joint line elevation and quadriceps peak force (r = − 0.29, p < 0.05). Conclusion The FFB technique did not lead to less coronal laxity in the mid-flexion range compared to MR. Although peak quadriceps force was significantly higher for the FFB group no clinically relevant benefits could be identified for the patients with regards to functional outcome. Therefore, minor deviations in joint line seems to have no effect on functional outcome after TKA. Trial registration ISRCTN, ISRCTN85351296. Registered 23 april 2021 - Retrospectively registered, https://www.isrctn.com/ISRCTN85351296

scholarly journals Neuropathic Pain After Total Knee Arthroplasty: A Cross-sectional Study in Female Patients

2021 ◽  
Vol 27 (2) ◽  
pp. 103-108
Author(s):  
Cemile Sevgi Polat ◽  
Didem Sezgin Özcan ◽  
Elif Umay Altaş ◽  
Şule Şahin Onat ◽  
Belma Füsun Köseoğlu
Keyword(s):  
Total Knee Arthroplasty ◽  
Neuropathic Pain ◽  
Knee Arthroplasty ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Female Patients ◽  
Total Knee

Incidence and Risk Factors of Kinesiophobia After Total Knee Arthroplasty in Zhengzhou, China: A Cross-Sectional Study

2018 ◽  
Vol 33 (9) ◽  
pp. 2858-2862 ◽  
Author(s):  
Libai Cai ◽  
Yanjin Liu ◽  
Huiping Xu ◽  
Qiulu Xu ◽  
Yanyan Wang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Total Knee

scholarly journals Factors predicting weight-bearing asymmetry 1month after unilateral total knee arthroplasty: A cross-sectional study

2013 ◽  
Vol 37 (3) ◽  
pp. 363-367 ◽  
Author(s):  
Cory L. Christiansen ◽  
Michael J. Bade ◽  
David A. Weitzenkamp ◽  
Jennifer E. Stevens-Lapsley
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Weight Bearing ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Total Knee

scholarly journals Changes of ankle inclinations after total knee arthroplasty

2017 ◽  
Vol 5 (2_suppl2) ◽  
pp. 2325967117S0010
Author(s):  
Murat Celal Sözbilen ◽  
Elcil Kaya Biçer ◽  
Semih Aydoğdu ◽  
Hakkı Sur
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Ankle Joint ◽  
Knee Arthroplasty ◽  
Joint Line ◽  
X Rays ◽  
Group I ◽  
Total Knee ◽  
Group Ii ◽  
Line Inclination

Aim: To evaluate the changes in ankle joint line inclination in patients who had total knee arthroplasty due to degenerative osteoarthritis. Material/Method: Sixty-two knees (with a mean age of 71,66±6,78 years, follow-up 52,34±27,42 months) which had undergone total knee arthroplasty between November 1996 and May 2014 were included in this retrospective study. The knee joint line orientations (KJLO) of the prosthesis and ankle joint line inclination (AJLI) relative to the floor were evaluated on postoperative standard standing long-leg X-rays. The AJLI relative to the floor was defined as the angle between the tangent to the subchondral plate of the talus and the horizontal grid line on radiographs. In order to determine the effects of KJLO and high varus on AJLI, patients were divided into two each groups that were pre-operative mechanical axes (MA) as <20° (n=35, group1) and >=20° (n=27, group2) and post-operative MA <3° (n=32, group a) and >=3° (n=30, group b). In addition, the changes in AJLI were compared between each group. The patients were regrouped as either <=3° (n=28, group i) or >3° (n=34, group ii), in terms of the postoperative KJLO. Inclination angles of the prosthesis were compared between each groups. Statistical analysis was performed with SPSS v18. Results: Mean MA of pre-operative and post-operative were 16,35±6,56° and 3,92±3,35°, respectively. All ankle inclinations were lateralized. AJLI, were significantly decreased from pre-operative mean 7,37°±3,19° to post-operative mean 3,71°±2,22° (p<0,0001). The mean of change was 3,65°±3,03°. However, pre-operative AJLIs were significantly increased in high varus group (group1: 6,34°±2,54°, group2: 8,70°±3,48°, p=0,003); post-operative AJLIs did not differ significantly (group1: 3,55°±2,36°, group2: 3,92°±2,05°, p=0,516) with respect to the MA. The changes in preop-postop AJLI’s were significantly higher in high varus group again (p=0,009). When the KJLO groups were compared, pre-operative AJLIs were significantly different (group i: 6,25°±2,33°, group ii: 8,29°±3,53°, p=0,004) while post-operative AJLIs did not differ significantly (group i: 3,46°±2,38°, group ii: 3,92°±2,08°, p=0,489). Conclusion: Pre-operatively high varus knees also had high ankle varus, hence ankle deformity was corrected by the restoration of the optimal lower limb aligment. Obtaining parallel orientation of the components relative to the ground, restored the AJLI. Pre-operative planning and convenient implantation of the components lead to achieve optimum knee orientation which restored the ankle joint line orientation independent from mechanical axes. Not only the goal of optimum mechanical axes but also optimum knee joint line orientation’s importance was demonsrated.

When Does the Knee Feel Normal Again: A Cross-Sectional Study Assessing the Forgotten Joint Score in Patients After Total Knee Arthroplasty

2018 ◽  
Vol 33 (3) ◽  
pp. 700-703 ◽  
Author(s):  
Victor R. Carlson ◽  
Zachary D. Post ◽  
Fabio R. Orozco ◽  
Destiny M. Davis ◽  
Rex W. Lutz ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Forgotten Joint Score ◽  
Total Knee

scholarly journals Intraoperative hypothermia in patients undergoing Total knee arthroplasty: a cross-sectional study from a developing country

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Ronika Devi Ukrani ◽  
Aiman Arif ◽  
Anum Sadruddin ◽  
Obada Hasan ◽  
Shahryar Noordin
Keyword(s):  
Risk Factors ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Cross Sectional Study ◽  
Care Hospital ◽  
Sectional Study ◽  
Cross Sectional ◽  
Link Type ◽  
Intraoperative Hypothermia ◽  
Total Knee

Abstract Background Intraoperative hypothermia is associated with various risk factors, morbidity, and mortality in patients undergoing total knee arthroplasty (TKA), increasing the emotional and financial burden on patients. This study aimed to identify risk factors of intraoperative hypothermia in patients undergoing TKA. Materials and methods All adult patients (⩾18 years) who underwent TKA from January 2016 to December 2017 at a tertiary-care hospital in Pakistan were included in this retrospective, cross-sectional study. Temperature < 36 °C was defined as hypothermia. Results The study included 286 patients (77.6% female) with a mean age of 61.4 ± 10.4 years. The overall proportion of intraoperative hypothermia was 26.6%. Of the total patients, 66.1% underwent bilateral TKA whereas 33.9% underwent unilateral TKA. 73.8% of the patients were ASA Level 2. Only 13.3% of patients had postoperative hypothermia. Conclusion Intraoperative hypothermia was significantly associated with age, bilateral procedure, ASA level and postoperative hypothermia in patients undergoing TKA. The surgeon and the operative team should be aware of the risk factors and the adverse outcomes associated with intraoperative hypothermia, especially in resource constrained settings to plan preventive strategies. Trial registration This study was retrospectively registered on ClinicalTrials.gov on 3rd October 2020. The registration ID is NCT04575246.

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