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Rectus femoris

Common Name
Knuckle, London broil, Outside round
Group
Pelvic
Whole Sale Section
Round, Loin
Origin
A tuberosity on the ilium just cranial to the acetabulum
Insertion
The base and anterior surface of the patella
Action
Flexes hip joint and extends stifle joint
Innervation
Femoral nerve
Blood Supply
Femoral and iliaco-femoral arteries.
Retail Cuts
Beef Round Sirloin Tip Roast, Beef Round Sirloin Tip Steak, Beef Round Sirloin Tip Roast Cap Off, Beef Round Sirloin Tip Steak Cap Off
Color
L* : 41.08
a* : 30.29
b* : 25.16
Pgment Conc. (Heme Iron) : 19.6
Processing Characteristics
Fat : 51.1
Moisture : 73.3
Protein : 200.6
Ash : 15
Palatability
Shear Force
Dry : 8lbs
Moist : 8.4lbs
Connective tissue amount
Dry : Slight amount
Moist : Traces amount
Flavor intensity
Dry : Slightly intense
Moist : Slightly intense
Juiciness
Dry : Slightly dry
Moist : Slightly dry
Tenderness - Panel Scores for Tenderness (8 point scale)
Dry : 5.74
Moist : 6.03
Evaluated Tenderness
Dry : Slightly tender
Moist : Moderately tender