case_images: PMC10837368_01
case_images: Right AP shoulder X-ray indicating heterotopic ossification at the proximal anteromedial shoulder measuring approximately 7.5 cm in length and 1.3 cm in thickness.. The patient was diagnosed with biceps tendonitis at this time.. AP: anteroposterior
case_images: cureus-0016-00000051616-i01.jpg
case_images: PMC10837368_01_cureus-0016-00000051616-i01.jpg
case_images: FIG1
case_images: This abnormal structure measured approximately 7.5 cm in length and 1.3 cm in thickness (Figure 1).
case_images: Right axial pectoral MRI indicating a bony fragment lateral to the biceps tendon with fluid at its insertion point.
case_images: cureus-0016-00000051616-i02.jpg
case_images: PMC10837368_01_cureus-0016-00000051616-i02.jpg
case_images: FIG2
case_images: This led to the order of a pectoral MRI to clarify the severity of the injury and a consultation with an orthopedic surgeon (Figure 2). From the pectoral MRI, the right PM tendon is noted to be avulsed from its insertion on the humerus (Figure 2).
case_images: Axial pectoral MRI showing the contralateral (left) side with intact tendon and bony fragment adjacent to the right biceps with no tendinous attachment to the humerus.
case_images: cureus-0016-00000051616-i03.jpg
case_images: PMC10837368_01_cureus-0016-00000051616-i03.jpg
case_images: FIG3
case_images: An expanded view of the pectoral MRI shows the contralateral (left) side with an intact tendon (Figure 3).
case_images: Bone mass attached to the pectoralis major.
case_images: cureus-0016-00000051616-i04.jpg
case_images: PMC10837368_01_cureus-0016-00000051616-i04.jpg
case_images: FIG4
case_images: A large palpable bony mass was discovered just lateral to the biceps brachii with the PM tendon entirely attached to it (Figure 4).
case_images: Four-centimeter resected bone avulsion.
case_images: cureus-0016-00000051616-i05.jpg
case_images: PMC10837368_01_cureus-0016-00000051616-i05.jpg
case_images: FIG5
case_images: The bony fragment was liberated, and the humerus was prepared for repair with a rasp and Cobb elevator (Figure 5).
case_images: One week status post surgery of right AP shoulder X-ray indicating three lucenies in the right proximal humerus at the site of the suture anchors.. The large, calcified body is no longer visible.. AP: anteroposterior
case_images: cureus-0016-00000051616-i06.jpg
case_images: PMC10837368_01_cureus-0016-00000051616-i06.jpg
case_images: FIG6
case_images: The patient's shoulder X-ray showed that the large, calcified body is no longer visible (Figure 6).