scholarly journals The association between hamstring strength and hamstring-quadriceps strength ratio with patellofemoral joint cartilage damage: the MOST study

2012 ◽  
Vol 20 ◽  
pp. S156-S157
Author(s):  
J. Stefanik ◽  
J. Niu ◽  
N. Segal ◽  
C. Lewis ◽  
M. Nevitt ◽  
...  
Keyword(s):  
Patellofemoral Joint ◽  
Cartilage Damage ◽  
Quadriceps Strength ◽  
Strength Ratio ◽  
Joint Cartilage

scholarly journals The Diagnostic Performance of Anterior Knee Pain and Activity-related Pain in Identifying Knees with Structural Damage in the Patellofemoral Joint: The Multicenter Osteoarthritis Study

2014 ◽  
Vol 41 (8) ◽  
pp. 1695-1702 ◽  
Author(s):  
Joshua J. Stefanik ◽  
Tuhina Neogi ◽  
Jingbo Niu ◽  
Frank W. Roemer ◽  
Neil A. Segal ◽  
...  
Keyword(s):  
Knee Pain ◽  
Anterior Knee Pain ◽  
Test Performance ◽  
Structural Damage ◽  
Patellofemoral Joint ◽  
Cartilage Damage ◽  
Great Accuracy ◽  
Moderate Pain ◽  
Predictive Values ◽  
Anterior Knee

Objective.To determine the diagnostic test performance of location of pain and activity-related pain in identifying knees with patellofemoral joint (PFJ) structural damage.Methods.The Multicenter Osteoarthritis Study is a US National Institutes of Health-funded cohort study of older adults with or at risk of knee osteoarthritis. Subjects identified painful areas around the knee on a knee pain map and the Western Ontario and McMaster Universities Osteoarthritis Index was used to assess pain with stairs and walking on level ground. Cartilage damage and bone marrow lesions were assessed from knee magnetic resonance imaging. We determined the sensitivity, specificity, positive and negative predictive values for presence of anterior knee pain (AKP), pain with stairs, absence of pain while walking on level ground, and combinations of tests in discriminating knees with isolated PFJ structural damage from those with isolated tibiofemoral joint (TFJ) or no structural damage. Knees with mixed PFJ/TFJ damage were removed from our analyses because of the inability to determine which compartment was causing pain.Results.There were 407 knees that met our inclusion criteria. “Any” AKP had a sensitivity of 60% and specificity of 53%; and if AKP was the only area of pain, the sensitivity dropped to 27% but specificity rose to 81%. Absence of moderate pain with walking on level ground had the greatest sensitivity (93%) but poor specificity (13%). The combination of “isolated” AKP and moderate pain with stairs had poor sensitivity (9%) but the greatest specificity (97%) of strategies tested.Conclusion.Commonly used questions purported to identify knees with PFJ structural damage do not identify this condition with great accuracy.

scholarly journals Can Collagenase Be Used in the Treatment of Adhesive Capsulitis?

2019 ◽  
Vol 29 (2) ◽  
pp. 174-180
Author(s):  
Nazım Karahan ◽  
Güzelali Ozdemir ◽  
Duygu Kolukısa ◽  
Serda Duman ◽  
Fatih Arslanoğlu ◽  
...  
Keyword(s):  
Single Dose ◽  
Saline Solution ◽  
Adhesive Capsulitis ◽  
Cartilage Damage ◽  
Male Rats ◽  
Collagenase Clostridium Histolyticum ◽  
Joint Cartilage ◽  
The Third ◽  
Significant Difference ◽  
Shoulder Range

Background: The objective of this study was to evaluate the efficacy of subacromial injections of collagenase and corticosteroid in rats with experimentally induced adhesive capsulitis. Method: Thirty adult Wistar albino male rats were distributed into 3 groups of 10 rats each after stabilization of their shoulders for 3 weeks: the first group received a single dose of 0.002 mg (0.25 mL) subacromial collagenase; the second group received a single dose of 1.60 mg (0.25 mL) subacromial steroid, and the third group received a single dose of 0.25 mL subacromial saline solution. One week later, we investigated shoulder range of motions, collagen content of the shoulder, and joint cartilage structure. Results: There was no statistically significant difference in the cartilage damage between the groups (p > 0.05). Fibrosis measurements were significantly lower in the collagenase group than in the steroid and saline groups. There was no significant difference in fibrosis between the steroid and saline groups (p > 0.05). Abduction measurements were significantly higher in the collagenase group than in the steroid and saline groups (p < 0.001). No significant difference in the abduction measurements was observed between the saline and steroid groups (p > 0.05). Conclusion: We observed that subacromial injections of collagenase Clostridium histolyticum effectively treated adhesive capsulitis. The results suggest that this treatment could be considered for use in patients with an intact rotator cuff.

scholarly journals Delayed gadolinium-enhanced magnetic resonance imaging of hip joint cartilage (dGEMRIC): pearls and pitfalls

2011 ◽  
Vol 3 (2) ◽  
pp. 11 ◽  
Author(s):  
Bernd Bittersohl
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Hip Joint ◽  
Cartilage Damage ◽  
Mr Arthrography ◽  
Image Resolution ◽  
Current Status ◽  
Joint Cartilage ◽  
Resonance Imaging ◽  
Joint Preservation

With the increasing advances in hip joint preservation surgery, accurate diagnosis and assessment of femoral head and acetabular cartilage status is becoming increasingly important. Magnetic resonance imaging (MRI) of the hip does present technical difficulties. The fairly thin cartilage lining necessitates high image resolution and high contrast-to-noise ratio (CNR). With MR arthrography (MRA) using intraarticular injected gadolinium, labral tears and cartilage clefts may be better identified through the contrast medium filling into the clefts. However, the ability of MRA to detect varying grades of cartilage damage is fairly limited and early histological and biochemical changes in the beginning of osteoarthritis (OA) cannot be accurately delineated. Traditional MRI thus lacks the ability to analyze the biological status of cartilage degeneration. The technique of delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) is sensitive to the charge density of cartilage contributed by glycosaminoglycans (GAGs), which are lost early in the process of OA. Therefore, the dGEMRIC technique has a potential to detect early cartilage damage that is obviously critical for decision-making regarding time and extent of intervention for joint-preservation. In the last decade, cartilage imaging with dGEMRIC has been established as an accurate and reliable tool for assessment of cartilage status in the knee and hip joint. This review outlines the current status of dGEMRIC for assessment of hip joint cartilage. Practical modifications of the standard technique including three-dimensional (3D) dGEMRIC and dGEMRIC after intra-articular gadolinium instead of iv-dGEMRIC will also be addressed.

scholarly journals Side-to-side asymmetry in lower limb strength and hamstring-quadriceps strength ratio among collegiate American football players

2019 ◽  
Vol 31 (11) ◽  
pp. 884-888
Author(s):  
Enver Tatlıcıoğlu ◽  
Ozan Atalağ ◽  
Berkiye Kırmızıgil ◽  
Cem Kurt ◽  
Mustafa Ferit Acar
Keyword(s):  
Lower Limb ◽  
Quadriceps Strength ◽  
American Football ◽  
Football Players ◽  
Strength Ratio ◽  
Lower Limb Strength ◽  
Side Asymmetry

A NEW CONCEPT FOR ISOKINETIC HAMSTRING/QUADRICEPS STRENGTH RATIO 56

1996 ◽  
Vol 28 (Supplement) ◽  
pp. 10 ◽  
Author(s):  
P. Aagaard ◽  
E. Simonsen ◽  
P. Magnusson ◽  
B. Larsson ◽  
P. Dyhre-Poulsen
Keyword(s):  
Quadriceps Strength ◽  
Strength Ratio
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