Journal of Musculoskeletal Trauma

Original Articles

Loss of Fixation after Internal Fixation of Intertrochanteric Femoral Fracture with Compression Hip Screw: Jong Oh Kim, Sang Yeol Chang, Joon Gue Moon, Hoon Jeong, Woo Chul Jeong; J Korean Soc Fract 2003;16(3):334-339. Published online July 31, 2003; DOI: https://doi.org/10.12671/jksf.2003.16.3.334

Abstract PDF: PURPOSE
To evaluate the factors which might affect the loss of fixation after surgical treatment of intertrochanteric fracture with compression hip screw.
MATERIALS AND METHODS
From February 1996 to February 2001, seventy nine cases of intertrochanteric fracture which we operated with compression hip screw was reviewed with minimal follow up for 6 months. There were twelve cases of loss of fixation. The cases were analyzed according to each factors which we thought to affect the loss of fixation. The factors are fracture type by modified Evans classification, Singh index, placement of screw in femoral head, quality of reduction. Then we analyzed these factors with chi square test.
RESULTS
Difference between age group and sex were not thought to be statistically meaningful factors (p>0.05). There were difference of prevalence between two group divided by fracture stability (p<0.05). In cases of superior placement in femoral head, there were more loss of fixation. Displacement of cortex of proximal femur on radiologic AP view other than lateral view showed meaningful difference (p<0.05).
CONCLUSION
Age, sex, Singh index did not affect the loss of fixation. But, next factors as follows affected the loss of fixation; Superior placement of hip screw, unstable fracture pattern, displacement of fracture site more than 5 mm after surgical reduction on radiologic AP view.

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Radiologic Evaluation for the Safe Zone of Percutaneous Iliosacral Screw Fixation: Jong Keon Oh, Su Young Bae, Jong Oh Kim, Kwon Jae Roh, Jeong Joon Lee, Sang Yeol Chang; J Korean Soc Fract 2002;15(3):336-341. Published online July 31, 2002; DOI: https://doi.org/10.12671/jksf.2002.15.3.336

PURPOSE
To evaluate the correlation of the safe zone of percutaneous iliosacral screw fixation with sacral dysmorphism and sacral alar slope variation.
MATERIALS AND METHODS
We studied the plain radiographs and the pelvic bone CT images of 52 patients. We reviewed each cases in terms of Routt 's dysmorphism and sacral alar slope variation(anterior, coplanar and posterior to inter-ICD line). We divided each cases into narrow and wide groups by the width of safe zone for the transverse 6.5mm cannulated cancellous screw. The data were analysed by McNemar x2-test and Cochran Q-test(p<0.05).
RESULTS
Typical sacral dysmorphism was found in five cases(9%). Four cases with dysmorphism(80%) and eighteen non-dysmorphic cases(38.2%) revealed narrow safe zones. The sacral slopes were anterior in 16 cases, coplanar in 25 cases, and posterior in 11 cases. The safe zone was significantly narrow in the group with anterior slope variation.
CONCLUSION
We could not found definite correlation between sacral dysmorphism and a narrow safe zone because the incidence of dysmorphism was too low in our study which differed from Routt 's report. An anterior sacral alar slope on CT can be a significant risk indicator for potential narrow safe zone and the risk of screw malposition.

Citations

Citations to this article as recorded by

Measurement of Optimal Insertion Angle for Iliosacral Screw Fixation Using Three-Dimensional Computed Tomography Scans
Jung-Jae Kim, Chul-Young Jung, Jonathan G. Eastman, Hyoung-Keun Oh
Clinics in Orthopedic Surgery.2016; 8(2): 133. CrossRef
Operative Treatment of Unstable Pelvic Ring Injury
Sang Hong Lee, Sang Ho Ha, Young Kwan Lee, Sung Won Cho, Sang Soo Park
Journal of the Korean Fracture Society.2012; 25(4): 243. CrossRef
Upper Sacral Morphology Related to Iliosacral Screw Fixation in Korean
Jung-Jae Kim, Chul-Young Jung, Hyoung-Keun Oh, Byoung-Se Yang, Jae-Suck Chang
Journal of the Korean Fracture Society.2007; 20(2): 115. CrossRef

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