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Orthopaedic Proceedings
Vol. 85-B, Issue SUPP_I | Pages 38 - 38
1 Jan 2003
Bidwell J Hajducka C Keating J
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A carbonated apatite cement with a high compressive strength was used in the treatment of tibial plateau fractures. There were 41 patients (20 male; 21 female; mean age 59 years). All patients had isolated tibial plateau fractures.

There were 15 B2.2, 23 B3.1 and 3 B2.3 fractures. Fractures were fixed with limited internal fixation using a short anterior parapatellar incision. Reduction and fixation were initially achieved. Once this was carried out the void under the elevated plateau was filled using calcium phosphate cement. A buttress plate was used in one case, screws or K-wires in 33 cases and calcium phosphate cement alone in 7 cases. Patients were mobilised partially weight bearing in a hinged knee brace and allowed full weight bearing at 6 weeks.

Reductions were anatomic (< 2mm displacement in 32 (78%) cases, satisfactory (3-5mm displacement) in 7 (17%) cases and imperfect (> 5mm) in 2 (5%) patients. Extrusion of some calcium phosphate cement into surrounding soft tissue occurred in one case. This material resorbed with no adverse effects. Loss of reduction was observed in 6 (15%) cases. There were no other significant complications. Thirty-seven patients (90%) had more than 120 degrees of knee flexion at 6 months.

Calcium phosphate cement is an alternative to the use of bone grafting in any area of cancellous subject to compressive load. It is ideal for use in tibial plateau fractures with compressed subchondral bone after elevation. It obviates the need for buttress plating and bone grafting and there is no bone graft donor site morbidity. Patients are able to mobilise more rapidly and early discharge is facilitated.

Calcium phosphate cement is a promising development in the management of tibial plateau fractures and initial results suggest it may be more effective in maintaining reduction that standard methods of fixation and grafting.