[The blood vessel system of the tendon of the long head of the biceps brachii muscle].
The microvascular pattern of the tendon of the long head of the biceps brachii muscle is investigated by filling the intratendinous vessels with an india ink-gelatin solution and by a histochemical method. Two different injection techniques are used. The first technique, which has been applied to six upper extremities, consists in an injection of 1000 ml india ink-gelatin solution into the subclavian artery. A tourniquet is placed above the elbow in order to avoid filling the vessels of the forearm. The second injection technique has been used in eight upper extremities. The injection is performed simultaneously into the subclavian and the brachial arteries, the axillary artery being ligated distally to the origin of the subscapular artery. Using the first method, two vascularization systems are visualized. The first arises from the supraglenoid tubercle; the second ascends from the proximal part of the biceps brachii muscle. The two systems do not seem to anastomose with each other end on. A small zone in the intracapsular part of the tendon seems to be avascular. The second injection technique results in much better filling of the intratendinous vessels than the first one. A continuous vascularization system is shown, extending from the supraglenoid tubercle to the biceps brachii muscle. In contrast to the results obtained by the first injection technique, no avascular zone is seen in the tendon of the biceps brachii muscle. The capillary system of different segments of three biceps tendons was also visualized by staining the vascular endothelium with a fluorisothiocyanate (FITC)-labelled lectin on cryostat sections. The sections were incubated with Ulex europaeus agglutinin I (UEA I).(ABSTRACT TRUNCATED AT 250 WORDS)
Korn
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Schünke
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D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006651:Histocytochemistry; D006652:Histological Techniques; D006801:Humans; D008297:Male; D008833:Microcirculation; D013710:Tendons / Q000098:blood supply*
Das Blutgefässsystem der langen Bizepssehne.