Migration of the Gamma Nail Neck Screw into the Pelvis with Bladder Damage.

Background: Medial migration of the cervical screw is a frequent complication of Gamma nails and is observed in 4.3% - 6% of cases. The reasons are a violation of the surgical technique of osteosynthesis of a trochanter fracture, including an unrepaired fracture, a breach of the insertion point of the fixator, and a suboptimal position of the cervical screw. However, the migration of the Gamma nail neck screw into the pelvic cavity is sporadic, and only a few cases have been published in the literature.

Case description: This is the case of a patient born in 1952 who was admitted to the hospital with pain syndrome in the pelvis and dysuric phenomena. As a result of clinical X-ray examination, CT, and MRT examination of the pelvis, medial migration of the Gamma nail cervical screw with damage to the bladder was revealed. The patient was urgently operated on the day of admission. The cervical screw from the bladder was removed, the bladder was sutured, and an epicystostomy was installed. The Gamma nail from the right femur was also released. There were no intraoperative complications. In the postoperative period, the patient was prescribed antibiotics and analgesics. The duration of hospitalization was six days. Being examined for five weeks after the operation, the patient does not make any particular complaints, walks without means of support, and the intertrochanteric fracture of the right femur fused incorrectly. The patient was offered an endoprosthesis of the right hip joint, but he and his relatives refused.

Conclusion: The traumatologist should be aware of the possibility of such complications after osteosynthesis and its associated risks. They should be able to recognize the etiological factors causing the medial migration of the cervical screw of the intramedullary retainer. If medial screw migration is detected, the traumatologist should assess the function of internal organs and the condition of the main vessels and take measures to safely remove the migrated fixator from the anatomical cavity of the body in one team with a surgeon, urologist and vascular surgeon.