Rupture of a muscle is a rather rare event compared to purely tendon ruptures. Typical example is the hamstring injury involving the hamstring muscles, commonly observed in soccer players, sprinters, and other sportsmen whose activities require a mix of speed, power, and agility. The case involved a young patient with a ruptured biceps brachii muscle of the right limb. The MRI exam documented subtotal rupture of the distal tendon of the right biceps brachii near the distal myotendinous junction with 5-cm diastasis. Following muscle suturing, HEART membrane was applied, which was shaped “funnel-like” and sutured to the distal portion of the biceps tendon and proximally to the perimuscular fascia.