A J Langdown, R J Pickard, C M Hobbs, H J Clarke, D J N Dalton & M L Grover, 2007. The Journal of Bone and Joint Surgery (Br) In press. We reviewed the initial post-operative radiographs of the Trident acetabulum and identified a problem with seating of the metal-backed ceramic liner. We identified 117 hips in 113 patients who had undergone primary total hip replacement using the Trident shell with a metal-backed... 

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A J Langdown, H Pandit, A J Price, U Svard, D W Murray, C A F Dodd & C L M H Gibbons, 2005 Acta Orthopaedica 76(5): 688-92 Spontaneous osteonecrosis of the knee (SONK) is a distinct clinical condition occurring in patients without any associated risk factors. There is controversy as to the best method of treatment, and the available literature would suggest that patients with SONK have a worse outcome than those with... 

A J Langdown, N Tsai, J Auld, W R Walsh, P M S Walker & W J M Bruce, 2006 J Arthroplasty 21(3): 380-383 We have prospectively recorded ambient operating theater temperature from 186 total knee arthroplasties and the time taken for the cement to set at implantation. The majority of cases used Antibiotic Simplex cement (n = 131), and the rest, Simplex with tobramycin (n = 55). Set time was defined as when a no. 15 scalpel...