Pravara Medical Review 01/2010;
Source: DOAJ

ABSTRACT In view of the variable presentations of biceps brachii, a proper understanding of the anatomy of the muscle, and possible anatomical variants is a pre-requisite in managing distal biceps injury. We present the case of a 65 years old male cadaver showing variationin the insertion pattern of biceps brachii muscle unilaterally on the left arm. Although the origin of the muscle was normal, its insertion was by two separate tendons; a common and an accessory; both inserting on diverse regions of the radial tuberosity. The common tendon was formed by the tendons from short head and long head. The accessory tendon was the extension of the fleshy belly on the lateral side of the main muscle (Accessory Muscle Belly) towards its lower third. Knowledge of the accessory tendon of the biceps iscrucial while performing tendon reconstruction and repair and it may also lead to unusual displacement of the bone fragment, subsequent to fracture.

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The anatomy of the distal biceps tendon and aponeurosis has not been studied in detail. Seventeen cadaver elbows were dissected with loupe magnification to identify the details of the distal biceps tendon and the lacertus fibrosus. In ten of the seventeen specimens, the distal biceps tendon was in two distinct parts, each a continuation of the long and short heads of the muscle. The remaining seven specimens showed interdigitation of the muscle distally. The tendon continued from each muscle belly. The short head inserted distal to the radial tuberosity and was positioned to be a more powerful flexor of the elbow, while the tendon of the long head inserted on the tuberosity further from the axis of rotation of the forearm and was positioned to be a stronger supinator. The bicipital aponeurosis consisted of three layers and completely encircled the ulnar forearm flexor muscles. The aponeurosis may be important in stabilizing the tendons distally. The double tendon insertion may allow an element of independent function of each portion of the biceps, and, during repair of an avulsion, the surgeon should ensure correct orientation of both tendon components.
    The Journal of Bone and Joint Surgery 06/2007; 89(5):1044-9. · 4.31 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The distal biceps brachii tendon is commonly susceptible to traumatic injury. This study aimed to describe the morphology of the distal biceps brachii tendon in relation to the commonly used endobutton repair of tendon rupture. The results suggested that the distal tendon is a series of distinct bands of variable number. These bands are obscured surgically by the tendon sheath. Upon opening this sheath, blunt dissection of the tendon released fibrous connections between the tendon bands. Adjacent bands were variably connected via small oblique bands. The separations between bands were continuous onto the radius. They were therefore considered as separate force-conducting units. This notion is of high relevance to endobutton repairs, as the sutures are typically only passed through the margins of the tendon. Where few connections exist between tendinous bands, this represents a potential weakness, as central bands are therefore free to be pulled proximally. This is of primary concern in the early rehabilitative stages of postoperative care. It may be suggested that sutures that cross the width of the tendon will eliminate the give of central bands, improving postoperative results, reducing revision numbers, and potentially reducing rehabilitation time.
    Clinical Anatomy 05/2009; 22(3):346-51. · 1.16 Impact Factor
  • Clinical Anatomy 12/2006; 19(8):702-3. · 1.16 Impact Factor

Full-text (2 Sources)

Available from
May 31, 2014