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LESS INVASIVE INTERNAL FIXATION FOR COMPLEX PERI-ARTICULAR FRACTURES OF THE TIBIA- A DISTRICT TRAUMA UNIT EXPERIENCE OVER 4 YEARS



Abstract

BACKGROUND: Complex tibial peri-articular fractures are known to be challenging with high complication rates. Techniques are evolving to assist the management of these injuries and this study looks at a Trauma unit’s experience to help evaluate indications, short and mid-term outcomes and complications.

METHOD: 4 year retrospective analysis of prospectively enrolled patients diagnosed with complex peri-articular fractures. Definitive treatment with Less Invasive Stabilisation System (LISS), low contact peri-articular plates and locking condylar plates, using minimally invasive percutaneous osteosynthesis (MIPO), irrespective of initial operative management were included. Follow up:until discharge from clinic with union and full weight bearing. Outcome: peri- and post-operative complications, loss of fixation, radiographic union, and range of motion.

RESULTS: 25 (15 proximal,10 distal tibial) operations by senior authors (RAB, SDD) over 4 years with a 16–88 year age (mean 44). Poly-trauma:7 (28%) of cases and 6 (24%) of the entire group were open fractures. Ten patients (40%): preceding damage-limitation procedure prior to definitive treatment (MIPO) and found to be over twice as likely to experience a complication compared to patients who did not. 3 (12%) of 10 had failed those alternative modalities. Overall infection rate was 24% (6 patients:2 deep wound infections; 4 open fracture wound infections). Infection was successfully managed with the use of debridement, flaps and antibiotics in 2 patients (8%); antibiotics alone on one (4%); in 3 patients with the delayed plate removal (12%), usually after union (1 revised with an intramedullary nail). Six plates (24%) were removed: 3 (12%) for infection; 2 (8%) for pain; 1 (4%) for plate fracture (revised). Other complications:2 (8%) significant wound breakdowns, one of whom required local flap cover. No mal-alignment issues; 1 patient developed common peroneal nerve neuropraxia. Patients who were operated after a week or more from injury were half (33%) as likely to suffer from a complication than those operated within a week (57%); P < 0.05 Chi-Square.

All progressed to union with 5 patients (20%) having metal work out at that end point and 8 (32%) healing without complication, further surgery or irritation. There were 18 re-operations in total in 9 (36%) of the patients.

CONCLUSION: Complex peri-articular fractures of the tibia continue to have a high re-operation rate with significant infection risk especially in open injury. Such techniques do provide a lower morbidity and short-term complication profile when compared with frames/hybrids and formal open fixation. The timing of minimal approach surgery is crucial and has yet to be fully defined. Within a department this type of fixation should be restricted to those with a specific interest, experience and training.

Correspondence should be addressed to Ms Larissa Welti, Scientific Secretary, EFORT Central Office, Technoparkstrasse 1, CH-8005 Zürich, Switzerland