Sensitivity of CT-scan as a Predictor of Fixation Failure in Per-trochanteric Fractures

Brief Summary

Detailed Description

Recently, epidemiological studies had shown an increase in hip fractures with aging of the population. Osteoporosis had been defined by a mean of -2.5 SD upon DEXA scan, which is not a practical tool to use in patients with recent hip fractures until management of such fractures either with fixation or replacement. Also it have been found that assessment of osteoporosis using the Singh index is not a reliable method for osteoporosis diagnosis . Osteoporosis may affect the decision making for dealing with per-trochanteric fractures as some surgeons prefer to do hip replacement for fear of fixation failure, while others still convinced that fixation with good reduction and appropriate placement of lag screw within a TAD less than 25mm is the best even with unstable types specially after the progress in proximal femoral nails . CT scan can be used for osteoporosis measurement. Even it can detect stress fractures that are not dRecently, epidemiological studies had shown an increase in hip fractures with aging of the population . Osteoporosis had been defined by a mean of -2.5 SD upon DEXA scan , which is not a practical tool to use in patients with recent hip fractures until management of such fractures either with fixation or replacement. Also it have been found that assessment of osteoporosis using the Singh index is not a reliable method for osteoporosis diagnosis . Osteoporosis may affect the decision making for dealing with per-trochanteric fractures as some surgeons prefer to do hip replacement for fear of fixation failure, while others still convinced that fixation with good reduction and appropriate placement of lag screw within a TAD less than 25mm is the best even with unstable types specially after the progress in proximal femoral nails . CT scan can be used for osteoporosis measurement. Even it can detect stress fractures that are not diagnosed using DEXA scan. It can be used to assess BMD in specific regions like spine or hip in a quantitative manner that can be compared to the T score used with DEXA scan . Again It can assess the presence of comminution in the anterior and posterior cortices that might not be easy with x-rays. The thickness of the lateral wall can be better measured through CT scan which is a critical measure while deciding to fix trochanteric fractures using whether DHS or PFN . The purpose of this prospective clinical cohort study is to assess the sensitivity of CT scan for localized osteoporosis detection that can be used in patients with hip fracture and detection of comminution and thin trochanteric lateral wall that might not be accessible with x-rays. And whether these independent factors could predict the fixation failure iagnosed using DEXA scan. It can be used to assess BMD in specific regions like spine or hip in a quantitative manner that can be compared to the T score used with DEXA scan . Again It can assess the presence of comminution in the anterior and posterior cortices that might not be easy with x-rays. The thickness of the lateral wall can be better measured through CT scan which is a critical measure while deciding to fix trochanteric fractures using whether DHS or PFN . The purpose of this prospective clinical cohort study is to assess the sensitivity of CT scan for localized osteoporosis detection that can be used in patients with hip fracture and detection of comminution and thin trochanteric lateral wall that might not be accessible with x-rays. And whether these independent factors could predict the fixation failure

Primary Outcomes

Secondary Outcomes

• Functional and patient reported outcome scores(one year)
• Postoperative complications(one year)
• Patients' history (e.g. Charlson comorbidity index) and demographics(one year)
• CT scan detected comminution(one year)
• QCT measurement of BMD(one year)
• Fixation quality(one year)