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  • Title: The impact of lag screw in the healing time of distal tibia fractures treated with minimally invasive plate osteosynthesis: A randomized clinical trial.
    Author: Vicenti G, Bizzoca D, Nappi VS, Carrozzo M, Delmedico M, Solarino G, Moretti B.
    Journal: Injury; 2020 Aug; 51 Suppl 3():S80-S85. PubMed ID: 32070556.
    Abstract:
    BACKGROUND: In recent years, Minimally Invasive Plate Osteosynthesis (MIPO) has been gaining popularity in the treatment of distal tibia fractures, because it is a minimally invasive surgical procedure, thus it limits the soft-tissues damage. This prospective randomized study aims to assess the impact of lag screw in the healing time of distal tibia fractures treated with MIPO technique, in a six-month follow-up. METHODS: Patients between 20 and 70 years of age with distal tibial fracture, type 43-A according to AO/OTA classification system were included. All the patients were randomized into two groups, to receive MIPO without lag screw (Group-A) or MIPO with percutaneous lag screw (Group-B). Patients were followed clinically and radiographically at 3, 6, 12 and 24 weeks postoperatively. The main outcome measure was the time needed to achieve the painless full weight-bearing (FWB) after surgery. Unpaired t-test after ANOVA (analysis of variance) was performed to assess AOFAS score differences between the 2 groups at each follow-up. Pearson correlation test also was performed. The tests were two-tailed with a confidence level of 5%. RESULTS: 42 patients (24 male and 18 female, mean age 49.54 years old, range 25-80) were recruited. A significant shorter mean time until painless FWB (p = 0.016) was observed in Group-B (11.22 ± 3.06 weeks) compared with Group-A (13.48 ± 2.42 weeks) (Table 2). The mean AOFAS score was comparable in patients treated with (Group-B) and without lag screw (Group-A) at all follow-ups. CONCLUSIONS: This prospective randomized clinical study has shown that the use of lag screw in distal tibia fractures treated with MIPO technique speeds the fracture healing, thus shortening the time needed to achieve FWB.
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