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Knee Exam

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261. Poly-traumatic multi-ligament knee injuries: is the knee the limiting factor? (Abstract)

dislocation grade. Functional outcomes and knee physical examination were assessed at a 2-year follow-up. New Injury Severity Score (NISS) was calculated based on the poly-traumatic injury pattern. Risk factors for worse outcomes in the poly-trauma cohort were analyzed.The mean IKDC, Lysholm, and NISS scores in the polytrauma cohort were 57.2 ± 21.9, 62 ± 22, and 40.9 ± 20.4, respectively, at a mean of 67 months (range 24-220). The isolated knee injury group was followed for a mean of 74 months (range 24 (...) -266) with mean IKDC and Lysholm scores of 71.1 ± 26.5 and 78 ± 23, respectively. Patients in the control cohort had significantly higher IKDC (p = 0.01) and Lysholm scores, (p = 0.003). There were no major differences between the two groups in regards physical examination findings at final follow-up. None of the analyzed risk factors was predictive of poor outcome.When comparing knees with similar multi-ligament and neurovascular injury patterns, patients who sustained their injury as a result

2017 Knee Surgery, Sports Traumatology, Arthroscopy

262. Fixed-flexion view X-ray of the knee superior in detection and follow-up of knee osteoarthritis. (Full text)

with knee OA. The 81 patients (157 knees) followed up for ≥24 months were selected as study subjects. Medial joint space widths (MJSW), Kellgren-Lawrence (KL) grades, and reductions in MJSW on SEV (ΔSEV) and FFV (ΔFFV) were compared in knees evaluated by SEV and FFV.At both time-points, mean MJSW was significantly lower by FFV than by SEV. Mean MJSW was significantly lower at follow-up than at first examination by both SEV and FFV. At both time-points, the KL grade was higher by FFV than by SEV group (...) Fixed-flexion view X-ray of the knee superior in detection and follow-up of knee osteoarthritis. A fixed flexion view (FFV) is useful for evaluating joint space when assessing the severity of osteoarthritis (OA) of the knee. We analyzed changes in joint space revealed by standing extended view (SEV) and FFV over a mean 4 years, to compare both views on their capacity to measure joint space width accurately at particular time points during follow-up.SEV and FFV images were acquired in patients

2017 Medicine PubMed abstract

263. Lower Extremity Arterial Calcification on Preoperative Knee Radiographs as a Predictor of Postoperative Cardiovascular Events After Primary Total Knee Arthroplasty. (Abstract)

Lower Extremity Arterial Calcification on Preoperative Knee Radiographs as a Predictor of Postoperative Cardiovascular Events After Primary Total Knee Arthroplasty. A cross-sectional study of total knee arthroplasty (TKA) patients was conducted to determine the association of lower-extremity arterial calcification (LEAC) with acute perioperative cardiovascular events (CVEs).Regression modeling was used to examine the association of radiographic presence of LEAC and acute myocardial infarction (...) -day mortality, and few 1-year mortality events, computing OR for these was not possible. Likewise, because of small number of events (n = 3), estimates for the odds of LEAC cases having an acute MI are less reliable, yielding extremely large random errors (OR 11.37; 95% CI 0.09-597.93) and must be interpreted with caution. The OR for 1-year mortality was 1.88 (95% CI 0.17-13.20), but again with large random errors.Our study shows that LEAC around the knee is associated with an increased risk

2017 Journal of Arthroplasty

264. The medial tibial joint line elevation over 5 mm restrained the improvement of knee extension angle in unicompartmental knee arthroplasty. (Abstract)

The medial tibial joint line elevation over 5 mm restrained the improvement of knee extension angle in unicompartmental knee arthroplasty. The purpose of this study was to examine the relationship between medial tibial joint line elevation and the improvement of range of motion (ROM) in unicompartmental knee arthroplasty (UKA). The hypothesis was that limited elevation of tibial joint line will improve knee range of motion in UKA.Forty-six consecutive medial UKAs were enrolled in this study (...) . Medial tibial joint line elevation was defined as the polyethylene insert and tibial tray thickness minus the tibial osteotomy and sawblade thickness. Positive values indicated an elevation of the tibial joint line. A component gap between the femoral trial prosthesis and the medial tibial osteotomy surface was also examined. Joint loosening was also calculated based on the joint component gap minus insert and tibial tray thickness. The correlation of the medial tibial joint line elevation with joint

2017 Knee Surgery, Sports Traumatology, Arthroscopy

265. MULTIPLE NONSPECIFIC SITES OF JOINT PAIN OUTSIDE THE KNEES DEVELOP IN PERSONS WITH KNEE PAIN (Full text)

-79 years with or at high risk of knee osteoarthritis who were recruited from 2 community-based cohorts, the Multicenter Osteoarthritis Study and the Osteoarthritis Initiative, and we followed them up for 5-7 years. We excluded those with knee pain at baseline and compared those who had developed knee pain at the first follow-up examination (the index visit) with those who had not. We examined pain on most days at joint regions outside the knee in examinations after the index visit. Logistic (...) regression analyses examined the risk of joint-specific pain adjusted for age, sex, body mass index, and symptoms of depression, and we performed sensitivity analyses excluding those with widespread pain.In the combined cohorts, 693 persons had knee pain at the index visit and 2,793 did not. A total of 79.6% of those with bilateral knee pain and 63.8% of those with unilateral knee pain had pain during follow-up in a joint region outside the knee, compared with 49.9% of those without knee pain

2017 Arthritis & rheumatology (Hoboken, N.J.) PubMed abstract

266. The effects of kinematically aligned total knee arthroplasty on stress at the medial tibia: A case study for varus knee (Full text)

The effects of kinematically aligned total knee arthroplasty on stress at the medial tibia: A case study for varus knee Little biomechanical information is available about kinematically aligned (KA) total knee arthroplasty (TKA). The purpose of this study was to simulate the kinematics and kinetics after KA TKA and mechanically aligned (MA) TKA with four different limb alignments.Bone models were constructed from one volunteer (normal) and three patients with three different knee deformities (...) (slight, moderate and severe varus). A dynamic musculoskeletal modelling system was used to analyse the kinematics and the tibiofemoral contact force. The contact stress on the tibial insert, and the stress to the resection surface and medial tibial cortex were examined by using finite element analysis.In all bone models, posterior translation on the lateral side and external rotation in the KA TKA models were greater than in the MA TKA models. The tibiofemoral force at the medial side was increased

2017 Bone & joint research PubMed abstract

267. Synovial Plica Syndrome of the Knee: A Commonly Overlooked Cause of Anterior Knee Pain (Full text)

Synovial Plica Syndrome of the Knee: A Commonly Overlooked Cause of Anterior Knee Pain Synovial plica syndrome (SPS) occurs in the knee, when an otherwise normal structure becomes a source of pain due to injury or overuse. Patients may present to general practitioners, physiotherapists, or surgeons with anterior knee pain with or without mechanical symptoms, and the diagnosis can sometimes be difficult. Several studies have examined the epidemiology, diagnosis, and treatment of SPS. We review (...) these resources to provide an evidence-based guide to the diagnosis and treatment of SPS of the knee.

2017 The Surgery Journal PubMed abstract

268. Knee Symptoms among Adults at Risk for Accelerated Knee Osteoarthritis: Data from the Osteoarthritis Initiative (Full text)

Knee Symptoms among Adults at Risk for Accelerated Knee Osteoarthritis: Data from the Osteoarthritis Initiative The purpose of this study was to examine if adults who develop accelerated knee osteoarthritis (KOA) have greater knee symptoms with certain activities than those with or without incident common KOA. We conducted a case-control study using data from baseline and the first four annual visits of the Osteoarthritis Initiative. Participants had no radiographic KOA at baseline (Kellgren (...) , or no KOA. To examine group difference in knee symptoms, we used ordinal logistic regression models for each symptom. Results are reported as odds ratios (OR) and 95% confidence intervals (CI). Individuals who developed accelerated KOA were more likely to report greater difficulty with lying down (OR = 2.10, 95% CI = 1.04 to 4.25), pain with straightening the knee fully (OR = 2.04, 95% CI = 1.08, 3.85), and pain walking (OR = 2.49, 95% CI = 1.38, 4.84) than adults who developed common KOA. Individuals

2017 Clinical rheumatology PubMed abstract

269. Multiligament Reconstruction of the Knee in the Setting of Knee Dislocation With a Medial-Sided Injury (Full text)

Multiligament Reconstruction of the Knee in the Setting of Knee Dislocation With a Medial-Sided Injury Multiple ligament knee injuries are complex pathologies that often result from traumatic knee dislocations. Both a high level of suspicion and a thorough clinical and radiographic examination are mandatory to diagnose and identify all injured structures. Reconstruction of all injured ligaments is recommended to aid in early mobilization and to avoid joint stiffness or graft failure. For knee (...) , sequence of reconstruction, tunnel position and orientation, and graft tensioning all pose surgical challenges, and require dedicated preoperative preparation and planning. The purpose of this Technical Note is to report a safe, effective, and reproducible surgical technique for treatment of multiligament injuries in the setting of a knee dislocation with a medial-sided component (classified as KD-III-M in the Schenck classification system).

2017 Arthroscopy techniques PubMed abstract

270. Test-retest reliability of repeated knee laxity measurements in the acute phase following a knee trauma using a Rolimeter (Full text)

Test-retest reliability of repeated knee laxity measurements in the acute phase following a knee trauma using a Rolimeter The purpose was to examine the test-retest reliability of the Rolimeter measurement procedure in the acute time phase, following a substantial knee trauma. In total, 15 participants with acute knee trauma were examined by one single observer at three different time-points with the Rolimeter using a maximum force. The selected time-points were: baseline (0-7 days after (...) the trauma), midpoint (3-4 weeks after the trauma), and endpoint (3-4 weeks after the trauma). The anterior-posterior displacement was recorded where the endpoint evaluation was used as the reference value. The mean anterior laxity scores remained constant over the measurement time-points for both knees, with an anterior laxity that was 2.7 mm higher (on average) in the injured than the noninjured knee (9.5 mm vs. 6.8 mm). The mean difference (i.e., bias) between laxity scores, for the injured knee

2017 Journal of exercise rehabilitation PubMed abstract

271. Simultaneous ipsilateral knee arthroscopy and unicondylar knee arthroplasty is effective for bicompartmental symptoms (Full text)

Simultaneous ipsilateral knee arthroscopy and unicondylar knee arthroplasty is effective for bicompartmental symptoms Patients with unicompartmental radiographic arthritis but bicompartmental symptoms pose a clinical challenge. Some surgeons may perceive it as a contraindication for unicondylar knee arthroplasty (UKA). We investigated patient outcomes 2 years after simultaneous ipsilateral arthroscopy and UKA as compared to a similar group of patients who had total knee replacement (TKA (...) and simultaneous arthroscopy. Further, TKA for isolated compartment radiographic disease in this limited series had poorer outcomes. We obtain MRI selectively when physical exam and radiographic findings suggest isolated arthritic disease in patients with bicompartmental symptoms.

2017 Journal of orthopaedics PubMed abstract

272. Strain measurements of the tibial insert of a knee prosthesis using a knee motion simulator (Full text)

on a parallel-link six degrees-of-freedom actuator and the principal strain and pressure distribution of the tibial insert were measured. In particular, the early stance phase obtained from in vivo X-ray images was examined because the knee is applied to the largest load during extension/flexion movement. The knee varus-valgus angles were 0° (neutral alignment), 3°, and 5° malalignment.Under a neutral orientation, the pressure was higher at the middle and posterior condyles. The first and second principal (...) Strain measurements of the tibial insert of a knee prosthesis using a knee motion simulator The longevity of a knee prosthesis is influenced by the wear of the tibial insert due to its posture and movement. In this study, we assumed that the strain on the tibial insert is one of the main reasons for its wear and investigated the influence of the knee varus-valgus angles on the mechanical stress of the tibial insert.Knee prosthesis motion was simulated using a knee motion simulator based

2017 Journal of orthopaedics PubMed abstract

273. Differences in tibial subchondral bone structure evaluated using plain radiographs between knees with and without cartilage damage or bone marrow lesions - the Oulu Knee Osteoarthritis study (Full text)

when examining subjects with osteoarthritis or at risk of having it.• Knee osteoarthritis causes changes in articular cartilage and subchondral bone • Magnetic resonance imaging is a comprehensive imaging modality for knee osteoarthritis • Radiography-based bone structure analysis can provide additional information of osteoarthritic subjects. (...) Differences in tibial subchondral bone structure evaluated using plain radiographs between knees with and without cartilage damage or bone marrow lesions - the Oulu Knee Osteoarthritis study To investigate whether subchondral bone structure from plain radiographs is different between subjects with and without articular cartilage damage or bone marrow lesions (BMLs).Radiography-based bone structure was assessed from 80 subjects with different stages of knee osteoarthritis using entropy

2017 European radiology PubMed abstract

274. Associations between systemic bone mineral density and early knee cartilage changes in middle-aged adults without clinical knee disease: a prospective cohort study (Full text)

Associations between systemic bone mineral density and early knee cartilage changes in middle-aged adults without clinical knee disease: a prospective cohort study Osteoarthritis has a high prevalence in people with high bone mineral density (BMD). Nevertheless, whether high systemic BMD predates early structural features of knee osteoarthritis is unclear. This study examined the association between systemic BMD and knee cartilage defect progression and cartilage volume loss in middle-aged (...) people without clinical knee disease.Adults (n = 153) aged 25-60 years had total body, lumbar spine, and total hip BMD assessed by dual-energy X-ray absorptiometry at baseline (2005-2008), and tibial cartilage volume and tibiofemoral cartilage defects assessed by magnetic resonance imaging at baseline and follow up (2008-2010).Higher spine BMD was associated with increased risk for progression of medial (OR = 1.45, 95% CI 1.10, 1.91) and lateral (OR = 1.30, 95% CI 1.00, 1.67) tibiofemoral cartilage

2017 Arthritis research & therapy PubMed abstract

275. Sagittal-Plane Knee Moment During Gait and Knee Cartilage Thickness (Full text)

) was obtained via ultrasound imaging, and peak internal knee-extensor moment (% body weight · height) was measured during 10 trials of over-ground walking at a self-selected pace. We used linear regression to examine the extent to which peak internal knee-extensor moment predicted cartilage thickness after accounting for tibiofemoral angle and sex.  Sex and tibiofemoral angle (12.3° ± 3.2°) were entered in the initial step as control factors (R2 = 0.01, P = .872). In the final step, internal knee-extensor (...) Sagittal-Plane Knee Moment During Gait and Knee Cartilage Thickness   Understanding the factors associated with thicker cartilage in a healthy population is important when developing strategies aimed at minimizing the cartilage thinning associated with knee osteoarthritis progression. Thicker articular cartilage is commonly thought to be healthier cartilage, but whether the sagittal-plane biomechanics important to gait are related to cartilage thickness is unknown.  To determine

2017 Journal of athletic training PubMed abstract

276. Advanced Knee Structure Analysis (AKSA): a comparison of bone mineral density and trabecular texture measurements using computed tomography and high-resolution peripheral quantitative computed tomography of human knee cadavers (Full text)

between high-resolution peripheral quantitative CT (HR-pQCT) and CT using human cadaveric knees. The secondary goal was the verification of the spatial resolution dependence of texture parameters observed in the earlier simulations, two important prerequisites for the interpretation of in vivo measurements in OA patients.The applicability of texture analysis to characterize bone architecture in clinical CT examinations was investigated and compared to results obtained from HR-pQCT. Fifty-seven human (...) knee cadavers (OA status unknown) were examined with both imaging modalities. Three-dimensional (3D) segmentation and registration processes, together with automatic positioning of 3D analysis volumes of interest (VOIs), ensured the measurement of BMD and texture parameters at the same anatomical locations in CT and HR-pQCT datasets.According to the calculation of dice ratios (>0.978), the accuracy of VOI locations between methods was excellent. Entropy, anisotropy, and global inhomogeneity showed

2017 Arthritis research & therapy PubMed abstract

277. Total Knee Arthroplasty in Severe Unstable Knee: Case-Report and Literature Review (Full text)

female patient with CMT and MG complaining of progressive pain, swelling, and crepitation of the knee joints who had been undergone total knee arthroplasty (TKA) with rotating hinge prosthesis. She had an acute myasthenia crisis soon after operation with prolonged intubation and intensive care unit admission. Radiographies and physical examination revealed bilateral severe unstable arthritic knee joints and left knee posterior dislocation. Short-term postoperative follow-up revealed improved knee (...) Total Knee Arthroplasty in Severe Unstable Knee: Case-Report and Literature Review Multiplanar or global laxity in arthritic knee is rare, most of this patients have neuromuscular disorder (post poliomyelitis, spinal dystrophy) or history of knee trauma. Ligament insufficiency and severe bone loss is significant in this patient. The estimated prevalence for the concurrence of charcot marie-tooth (CMT) with myasthenia gravis (MG) suggests an extremely rare event. We have presented a 54-year-old

2017 Archives of bone and joint surgery PubMed abstract

278. The relationship between knee joint angle and knee flexor and extensor muscle strength (Full text)

disabilities or had experienced damage to the lower extremities in terms of measurement of muscular strength. A BIODEX system III model (Biodex medical system, USA) was used to measure joint angles and muscular strength. The axis of the dynamometer was consistent with the axis of motion, and measurements were made at 25° and 67° to examine differences in maximum muscular strength according to joint angle. [Results] The maximum muscular strength both knee-joint extension value, at 67° and flexion value (...) The relationship between knee joint angle and knee flexor and extensor muscle strength [Purpose] The aim of this study was to determine a relationship between joint angle and muscular strength. In particular, this research investigated the differences in maximum muscular strength and average muscular strength at the knee-joint posture. [Subjects and Methods] The study subjects comprised eight female students in their 20s attending S University in Busan. None of the subjects had functional

2017 Journal of physical therapy science PubMed abstract

279. A Biologic Joint Replacement Strategy to Treat Patients With Severe Knee Trauma and Post-Traumatic Knee Osteoarthritis

will be Grade IV changes in the articular cartilage of the femoral condyle and tibial plateau and meniscal pathology in the medial or lateral femorotibial joint as determined by physical examination, diagnostic imaging and knee arthroscopy by the PI. Exclusion criteria include Grade III or IV changes in any other compartment of the knee, acute injury to any other part of the affected lower extremity, or inability to comply with the protocol. After enrollment, patients will undergo standardized knee (...) A Biologic Joint Replacement Strategy to Treat Patients With Severe Knee Trauma and Post-Traumatic Knee Osteoarthritis A Biologic Joint Replacement Strategy to Treat Patients With Severe Knee Trauma and Post-Traumatic Knee Osteoarthritis - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum

2017 Clinical Trials

280. Balancing Kinematically Aligned Total Knee Replacements During Total Primary Knee Arthroplasty Using Verasense

balance with Verasenes pressure sensor on gait parameters measured with Knee KG? ANOVA will be used to examine pre and post-operative differences in specific features of knee kinematics between groups. Primary and secondary outcomes will be evaluated using listings and summary statistics. Improvement in pain and function will be analyzed using t-test or Wilcoxon Rank tests. Study Design Go to Layout table for study information Study Type : Interventional (Clinical Trial) Estimated Enrollment : 60 (...) Balancing Kinematically Aligned Total Knee Replacements During Total Primary Knee Arthroplasty Using Verasense Balancing Kinematically Aligned Total Knee Replacements During Total Primary Knee Arthroplasty Using Verasense - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved

2017 Clinical Trials

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