الفهرس 
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Abstract
The study aimed to determine and report our preliminary clinical and radiological results. with the use of INFIX for treatment of pelvic ring injuries and by doing CT post-operative and compare with 2nd CT at time of infix removal to evaluate maintenance & stability of pelvic ring in addition to plain radiological assessment according to Matta JM and Tornetta scoring criteria.
This prospective clinical study was conducted on unstable pelvic ring injury patients in the department of orthopedic and traumatology surgery at Minia university hospital from January 2022 to January 2023. The study was included 40 patients with unstable pelvic ring injuries.
The duration of follow up ranged between 13 and 24 (17± 3.609) months
Blood loss in fixation of anterior and posterior ring (especially by plate) has more blood loss than those with only anterior fixation. It ranged from 60-750 cc with mean 254 ± 504.01
Whole operative time ranged from 25 to 80 (54.875± 12.11) min while the time of fixation by infix wase range from 15 to 30 min. with mean 24± 4.41 This table show that there was highly statistically significant difference between studied group regarding time of infix application and whole operative time of pelvic surgery involving posterior procedure.
Hospital stay postoperatively ranged from 1 to 6 days (2.45±1.413).
Posterior ring stability is mandatory by variable type of fixation. 3 cases (7.5%) fixed by 2 plates and screws by anterior approach, 31 cases (77.5%) were type fixed by 2 screws, 2 cases (5%) fixed by 1 screw, 1 case (2.5%) fixed by 2 plates by posterior approach and 3cases 7.5% not needed fixation
Radiographic union (visible callus formation seen at pubic rami in standard anteroposterior, inlet and outlet X-ray and MDCT of the pelvis) was achieved in all patients and recorded between 12 and 18 weeks (14.325± 3.57) weeks
Six case (15%) complained of meralgia paresthetica at the upper lateral thigh most of them resolved within 6 months
Six cases fifteen percent presented with superficial wound infections that were resolved with repetitive dressings & intravenous antibiotics for seven days; therefore, surgical debridement was unnecessary.
Seven case (17.5%) complained of discomfort at subcutaneous rod which resolved after extraction of infix
One case (2.5%) complained of transient Femoral nerve compression in form of quadriceps weakness which improved after removal of infix
One case (2.5%) complained of temporary knee stiffness we started physiotherapy in follow up
One case (2.5%) complained of collecting hematoma in the tract of subcutaneous rod due to continuous anticoagulant therapy without medical advice and stopped after discovery during follow up.
There were 13 cases (32.5%) excellent, 18 cases (45%) good, 6 cases (15%) fair and 3 cases (7.5%) poor regarding to Majeed score
Radiological scoring by Matta scoring show that 24 cases (60 %) excellent, 10 cases (25%) good, 6 cases (15%) fair and no cases show poor outcome.