Biceps Femoris Distal Tendon

More distally, the conjoined tendon of semitendinosus and biceps femoris can be distinguished from the tendon of semimembranosus owing to its more superficial and lateral position (Fig. 12.26). At this level, the two hyperechoic tendons and the sciatic nerve form the boundaries of a hyperechoic trian-... 

In summary, one should remember that the semitendinosus and the biceps femoris muscles arise from a common tendon located over the semimembranosus tendon. This conjoined tendon inserts into the lateral aspect of the ischial tuberosity rather than into its inferior face. Shifting the transducer downwards on transverse planes, the first muscle which appears is the semitendinosus, followed by the lateral biceps femoris and, more distally, by the medial semimembranosus. The sciatic nerve is... 

Next, every effort should be made to localize the pain as precisely as possible because this can provide useful information to target the US examination. As a general rule, diffuse knee pain derives from joint lesions, whereas more localized pain is more commonly related to tendon involvement and local disorders. Information on the character, duration and location of pain is extremely helpful in the evaluation of tendinitis. In jumper s knee , for instance, the patient typically reports pain over the most proximal portion of the patellar tendon, just behind the tip of the patella. Runners complaining of lateral knee pain and tenderness should be questioned for signs of tendinitis affecting the distal insertion of the biceps femoris and the iliotibial band, so-called runner s knee . In the event of soft-tissue lumps or indeterminate swelling around the... 

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