• Zaid Mohammed Al-Ani, Santosh Bindumadhavan, Khalid Sharif, and Vijay Killampali.
• Department of Trauma & Orthopedics, Hinchinbrooke Hospital, Huntingdon, United Kingdom.
• J Coll Physicians Surg Pak. 2022 Nov 1; 32 (11): 1474-1477.

ObjectiveTo determine the effect of a calcar stabilising anti rotation screw on reducing the complication rate in intertrochanteric hip fractures.Study DesignAn observational study.Place And Duration Of StudyHinchingbrooke Hospital, Northwest Anglia Foundation Trust, Huntingdon, UK, from July 2019 to December 2020.MethodologyAll A2 Intertrochanteric fractures according to the AO31 classification fixed with dynamic hip screw (DHS) were included. Exclusion criteria were A1 and A3 fractures, pathological, and per-prosthetic fractures. Fifty-four patients were divided into two groups. Group one (21) patients were managed with a DHS and a calcar stabilising screw. Group two (33) were managed with a dynamic hip screw (DHS) only. Both groups had a 12 months follow-up. Study variables were age, gender, ASA and preoperative mobility status, and tip-apex distance; while outcome measures were mechanical failures including cut-out needing revisions and medialisation associated with pain.ResultsNo patients in the group one suffered mechanical failure compared to 27% in group two.ConclusionA calcar stabilising screw reduces the failure rate of A2 unstable intertrochanteric fractures when used in conjunction with the DHS.Key WordsIntertrochanteric fractures, Hip fracture, A2 unstable fracture, Dynamic hip screw, Calcar stabilising screw, Mechanical failure.

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