Muhammad Shabir, Muhammad Inam, Abdus Saboor Awan, Faisal Kamran, Nehal Ahmad.
Mean Tip-Apex Distance in Lag Screw Cut-Out After Dynamic HIP Screw Fixation of Hip Fracture.
J Ayub Med Coll Abottabad Jan ;30(3):414-6.

Background: To determine mean tip-apex distance after Dynamic Hip Screw fixation of intertrochanteric fracture. Methods: This descriptive cross-sectional study was conducted in the Department of Orthopaedics, Hayatabad Medical Complex, Peshawar from October 2015 to September 2016 on a total 285 patients. Results: A total of 285 patients were observed. Status of TAD among 285 patients was analysed as 171 (60%) patients had TAD ranged 15 mm to 20 mm, 91(32%) patients had TAD ranged 21 mm to 25 mm, 23 (8%) patients had TAD ranged >25mm. Mean TAD was 18 mm with SD±7.45. Eight percent patients had screw cut out while 92% patients didn?t had screw cut out. Conclusion: To avoid lag screw cut out in dynamic hip screw for intertrochanteric fracture of hip the Tip apex distance must be accurate otherwise there will be cut out of lag screw.

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