000			05947namaa22004451i 4500
003			EG-GICUC
005			20251210112138.0
008			251210s2025 ua a|||frm||| 000 0 eng d
040			_aEG-GICUC _beng _cEG-GICUC _dEG-GICUC _erda
041	0		_aeng _beng _bara
049			_aDeposit
082	0	4	_a617.47
092			_a617.47 _221
097			_aM.Sc
099			_aCai01.11.25.M.Sc.2025.Ma.I
100	0		_aMahmoud Maher Mostafa, _epreparation.
245	1	0	_aIncidence of sacral dysmorphism among egyptian population, anatomic determinants and implication for sacroiliac screw fixation / _cby Mahmoud Maher Mostafa ; Supervisors Dr. Walid Asharf Elnahal, Dr. Ahmed Gouda Ali Elhamalawy, Dr. Rania Ali Elzaitoun.
246	1	5	_aتحديد نسبة انتشار التشوه العجزي بين المصريين والمحددات التشريحية لخلل التشوه العجزي وتأثيرها علي وضع المسمار الحرقفي العجزي بشكل آمن
264		0	_c2025.
300			_a139 pages : _billustrations ; _c25 cm. + _eCD.
336			_atext _2rda content
337			_aUnmediated _2rdamedia
338			_avolume _2rdacarrier
502			_aThesis (M.Sc)-Cairo University, 2025.
504			_aBibliography: pages 126-139.
520		3	_aBackground: Percutaneous iliosacral screw fixation is the current gold standard for treating posterior pelvic ring injuries. However, screw misplacement occurs in up to 15% of cases, potentially causing neurovascular complications. This issue is closely linked to the orientation and size of safe fixation corridors in dysmorphic sacra, where abnormalities in the upper sacral segment increase the risk of cortical perforation during screw placement. Dysmorphic sacra are characterized by narrow and angled upper osseous corridors, the pelvis was reviewed for qualitative features and quantitatively using specific anatomical measurements. Broad objective: To evaluate qualitative and quantitative characteristics of sacral dysmorphism as well as the prevalence of sacral dysmorphism in Egypt. Study design and site: This was cross sectional prospective study carried out at the radiology department at Kasr Alainy Hospital at Cairo University. Methodology: For this study, 1,000 pelvic CT scans meeting the inclusion and exclusion criteria were evaluated for six qualitative features of upper sacral segment dysplasia from March 2024 to December 2024. The CT images were reformatted to measure the width of the osseous corridors. Data collected included qualitative features of sacral dysmorphism and objective measurements, such as S1 and S2 corridor diameters, to assess their correlation with sacral dysmorphism. Results: Sacral dysmorphism (SDM) was found in 19% of Egyptians, with mammillary processes (81.6%) and residual upper disc space (80%) being the most prevalent features. Combined patterns, such as “mammillary processes, residual upper disc space, and acute alar slope,” appeared in 23.7% of cases. SDM was more common in females (34.7% vs. 26.3%, p=0.02). S1 corridors were narrower, while S2 corridors were wider in SDM cases compared to normal subjects, with significant differences in measurements. Notch prevalence varied slightly between groups. Conclusion: In the Egyptian population, sacral dysmorphism (SDM) was identified in 19% of cases, with mammillary processes being the most common feature (81.6%). Females were affected more often than males (34.7% vs. 26.3%, p=0.02). SDM cases exhibited narrower S1 corridors and wider S2 corridors compared to normal individuals.
520		3	_aالعجز هو العنصر الأساسي في الحزام الحوضي ويتعرض لضغوط عالية مما يجعل كسوره عادة معقدة. لذلك، من المهم استعادة تركيبه التشريحي والميكانيكي بدقة عالية، مما يجعل علاجه تحديًا كبيرًا. تُعتبر كسور العجز شائعة في إصابات الحلقة الحوضية، بنسبة حدوث (30-45%). غالبًا ما يتم التقليل من تشخيص هذه الكسور وعلاجها، مما قد يؤدي إلى اختلالات عصبية. ترتبط اضطرابات الحلقة الحوضية الخلفية بمضاعفات خطيرة، بما في ذلك الألم المزمن، والاختلالات الجنسية، ومشاكل المثانة والأمعاء، وانخفاض القدرة على العودة إلى العمل. التثبيت العجزي الحرقفي عن طريق الجلد يعد تقنية صعبة تقنيًا، حيث يُعتبر الخطأ في وضع المسامير من أبرز المضاعفات، مما قد يؤدي إلى إصابات عصبية أو وعائية مُفتعلة. تعتمد هذه التقنية بشكل كبير على وجود تشريح طبيعي للعجز. يشير مصطلح "تشوهات العجز" إلى اختلافات غير طبيعية في الشرائح العجزية العلويه، مما قد يُشكل ممرات عظمية ضيقة أو أكثر ميلًا، مما يُقيد وضع مسامير العجز بأمان.
530			_aIssues also as CD.
546			_aText in English and abstract in Arabic & English.
650		0	_aOrthopedic Surgery
650		0	_aجراحة العظام
653		1	_asacral dysmorphism _acorridors _amammillary processes _aالتشوه العجزي _aالنتواءات العظميه الحلميه
700	0		_aWalid Asharf Elnahal _ethesis advisor.
700	0		_aAhmed Gouda Ali Elhamalawy _ethesis advisor.
700	0		_aRania Ali Elzaitoun _ethesis advisor.
900			_b01-01-2025 _cWalid Asharf Elnahal _cAhmed Gouda Ali Elhamalawy _cRania Ali Elzaitoun _UCairo University _FFaculty of Medicine _DDepartment of Orthopedic Surgery
905			_aShimaa
942			_2ddc _cTH _e21 _n0
999			_c176614