scholarly journals Variations in the Isometric Quadriceps and Hamstrings Strength at Different Knee Joint Angles and Points of Time after Total Knee Arthroplasty

2017 ◽  
Vol 32 (4) ◽  
pp. 553-557
Author(s):  
Yutaro SANADA ◽  
Suguru OHSAWA ◽  
Takayuki SHIIKI ◽  
Koji IMATAKA
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Joint Angles ◽  
Total Knee

scholarly journals Osteoarthritis of the knee joint. Etiology, treatment, rehabilitation (analytical review of the literature)

TRAUMA ◽  
2021 ◽  
Vol 22 (3) ◽  
pp. 5-11
Author(s):  
Khaled Obeidat ◽  
O.D. Karpinska
Keyword(s):  
Quality Of Life ◽  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Knee Replacement ◽  
Knee Arthroplasty ◽  
Gait Parameters ◽  
Total Knee ◽  
The Difference ◽  
Knee Pathology

According to epidemiological studies, osteoarthritis accounts for 10–12 % of all cases of musculoskeletal diseases. In the general structure of knee pathology, degenerative diseases make up 57.8 %. The urgency of the problems of gonarthrosis is due to not only its widespread prevalence, but also the high risk of developing knee dysfunction, accompanied by a significant reduction in the quality of life of patients and often leading to partial or permanent disability of patients. Gonarthrosis has significant gender features. Women account for about 70 % of the number of patients, while men had this disease almost 2 times less often, but other data indicate that the incidence of gonarthrosis in men under 60 years of age is higher, and in women it begins to increase after 65 years. Knee replacement is a leading method in the treatment of knee osteoarthritis stages III–IV. The tendency towards an increase in the total number of surgeries leads to an increase in the frequency of complications and unsatisfactory results: according to some authors, from 3.3 to 13.2 % of patients complain of knee replacement outcomes. Studies of long-term complaints after arthroplasty have shown that in addition to pain reduction, some patients had an increase in varus angle when bending the knee while walking but they didn’t mark an improvement in gait parameters compared to preoperative examination. After unilateral total knee arthroplasty, the load patterns of the frontal plane in the operated knee remain pathological in the long run. After knee arthroplasty, there is muscle weakness, and studies have shown changes in all muscles of the lower extremity. Weakening of some muscles led to compensatory strengthening of others. Studies of the effect of preoperative rehabilitation on the outcome of knee arthroplasty have shown its low efficiency. Many studies have studied motor activity of patients after total knee arthroplasty in recent years. Not only gait features, but also movements of the pelvis, trunk and upper extremities are studied. Modern methods of diagnosing spatial oscillations of the body when walking have shown that disorders of body movements — excessive hand movements, pelvic loosening, asymmetrical flexion of the knee joints, etc., after arthroplasty are preserved in patients and restore slowly, and some disorders remain forever. Conclusions. Knee arthroplasty relieves pain, improves quality of life, but according to many authors, patients complain of incomplete restoration of the functionality of the prosthetic limb. According to the researchers, the main cause for incomplete reco-very of gait parameters is the difference in the frontal angles of the knee joint flexion and the difference in the length of the steps. Special training exercises can reduce the asymmetry of the steps, but it is difficult to completely restore the symmetry of the steps within 2 years. Studies of the effect of preoperative rehabilitation on the outcome of knee arthroplasty have shown its low effectiveness.

scholarly journals Functional Factors of the Knee Joint and Body Which Improve Patients’ Satisfaction after Total Knee Arthroplasty

2018 ◽  
Vol 33 (3) ◽  
pp. 405-409
Author(s):  
Hiroki OYAGI ◽  
Kazuaki KINOSHITA ◽  
Kazunari ISHIDA ◽  
Nao SHIBANUMA
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Patients Satisfaction ◽  
Functional Factors ◽  
Total Knee

The Impact of Intraoperative Gap Difference Between Extension and Flexion on Perception of Joint Function After Total Knee Arthroplasty: a Comparative Retrospective Study

2021 ◽  
Author(s):  
Tomohiro Okayoshi ◽  
Yoshinori Okamoto ◽  
Hitoshi Wakama ◽  
Shuhei Otsuki ◽  
Masashi Neo
Keyword(s):  
Total Knee Arthroplasty ◽  
Retrospective Study ◽  
Soft Tissue ◽  
Knee Joint ◽  
Predictive Factors ◽  
Knee Arthroplasty ◽  
Difference Threshold ◽  
Joint Function ◽  
Flexion Gap ◽  
Total Knee

Abstract Background: The argument presupposes that intra-operative soft tissue balance is associated with patient-reported outcome measures after total knee arthroplasty (TKA). Our aim was to assess the association between the extension-to-flexion gap and patients’ reported perception of knee joint function.Methods: This was a retrospective study of 60 cases of primary cruciate-retaining TKAs performed for the treatment of medial-compartment knee osteoarthritis, at a mean follow-up of 2.6 (range, 2.0–5.2) years. Knee perception was evaluated by asking patients whether they considered their knee joint as “natural” (grade I) or “artificial”, with or without restrictions (grades II–V). The following factors were compared between the two groups: age, sex, and the extension-to-flexion gap difference. A multiple logistic regression analysis was used to identify predictive factors of an artificial knee joint perception. A receiver operating characteristic curve analysis was used to identify cut-off values of predictive factors. Result: Compared to a natural knee joint perception (26 knees, 43%), an artificial perception (34 knees, 57%) was associated with a smaller gap difference at the distraction force of 20 lbf (p < .001), 30 lbf (p = .022), and 40 lbf (p = .038), a lower EuroQol 5-Dimension score (p = .029), and self-reported joint health (Knee injury and Osteoarthritis Outcome Score-Joint Replacement [KOOS-JR], p = .032). A gap difference <1.0 mm was a predictive of an artificial perception (odds ratio, 1.63; 95% confidence interval, 1.33–4.54; p < .001). A cut-off gap difference of 0.99 mm at 20 lbf predicted an artificial perception with a sensitivity of 81.5% and a specificity of 87.9%. Post-operative satisfaction (p < .001), KOOS-JR (p < .001), patient’s joint perception (p = .006), pain (p = .015), and EuroQol 5-Dimension (p = .032) differed between the two groups when the gap difference threshold was set to 1.0 mm.Conclusion: Careful balancing of soft tissue during TKA to achieve an extension-to-flexion gap ≥ 1.0 mm can improve patients’ perception of knee joint function and quality of life.

Quantifying Achievable Levels of Improvement in Knee Joint Biomechanics During Gait After Total Knee Arthroplasty Relative to Osteoarthritis Severity

2020 ◽  
pp. 1-9
Author(s):  
Jereme B. Outerleys ◽  
Michael J. Dunbar ◽  
Glen Richardson ◽  
Cheryl L. Hubley-Kozey ◽  
Janie L. Astephen Wilson
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Frontal Plane ◽  
Knee Adduction Moment ◽  
Patient Specific ◽  
Knee Biomechanics ◽  
Knee Oa ◽  
Joint Biomechanics ◽  
Total Knee

Total knee arthroplasty (TKA) surgery improves knee joint kinematics and kinetics during gait for most patients, but a lack of evidence exists for the level and incidence of improvement that is achieved. The objective of this study was to quantify patient-specific improvements in knee biomechanics relative to osteoarthritis (OA) severity levels. Seventy-two patients underwent 3-dimensional (3D) gait analysis before and 1 year after TKA surgery, as well as 72 asymptomatic adults and 72 with moderate knee OA. A combination of principal component analysis and discriminant analyses were used to categorize knee joint biomechanics for patients before and after surgery relative to asymptomatic, moderate, and severe OA. Post-TKA, 63% were categorized with knee biomechanics consistent with moderate OA, 29% with severe OA, and 8% asymptomatic. The magnitude and pattern of the knee adduction moment and angle (frontal plane features) were the most significant contributors in discriminating between pre-TKA and post-TKA knee biomechanics. Standard of care TKA improves knee biomechanics during gait to levels most consistent with moderate knee OA and predominately targets frontal plane features. These results provide evidence for the level of improvement in knee biomechanics that can be expected following surgery and highlight the biomechanics most targeted by surgery.

scholarly journals Lateral dislocation of the knee joint after total knee arthroplasty: a case report

Cases Journal ◽  
2008 ◽  
Vol 1 (1) ◽  
pp. 75 ◽  
Author(s):  
Ender Ugutmen ◽  
Korhan Ozkan ◽  
Koray Unay ◽  
Mahir Mahirogullari ◽  
Engin Eceviz ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Case Report ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Lateral Dislocation ◽  
Total Knee

scholarly journals Comparing single and multi-joint methods to detect knee joint proprioception deficits post primary unilateral total knee arthroplasty

2019 ◽  
Vol 68 ◽  
pp. 197-204 ◽  
Author(s):  
Abderrahman Ouattas ◽  
Elizabeth Wellsandt ◽  
Nathaniel H. Hunt ◽  
C. Kent Boese ◽  
Brian A. Knarr
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Total Knee
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