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Title: One-Third Tubular Plate Remains a Clinically Good Option in Danis-Weber Type B Distal Fibular Fracture Fixation.
Author: Ahn JH, Cho SH, Jeong M, Kim YC.
Journal: Orthop Surg; 2021 Dec; 13(8):2301-2309. PubMed ID: 34708569.
Abstract:
OBJECTIVE: To compare the clinical outcomes of locking plate (LP) and non-locking one-third tubular plate (TP) fixation, and to provide guidance on plate selection for Danis-Weber type B distal fibular fracture treatment. METHODS: In total, 83 patients who underwent plate fixation for Danis-Weber type B distal fibular fractures between March 2013 and July 2018 were retrospectively reviewed: 41 (49.0%) received LPs and 42 (51.0%) received TPs. Patients' demographic data, follow-up durations, the proportion of comminuted fractures, and ankle range of motion were investigated. The American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale, Karlsson scale, Foot and Ankle Ability Measure (FAAM), and Lower Extremity Functional Scale (LEFS) scores were assessed. The radiographic union progression and implant removal time were evaluated, along with postoperative complications. Data from the LP and TP groups were compared statistically. RESULTS: The mean patient ages were 53.3 ± 17.5 years (range, 16-80 years) and 47.6 ± 17.0 years (range, 14-68 years) in the LP and TP groups, respectively (P > 0.05). The gender distribution did not differ significantly between groups (P > 0.05). Other demographic data also did not differ significantly between groups (P > 0.05). The mean follow-up durations were 16.8 ± 7.7 months (range, 13.0-19.0 months) in the LP group and 16.1 ± 6.2 months (range, 12.0-20.0 months) in the TP group (P > 0.05). Comminuted fractures were observed in 18 of 41 (43.9%) patients with LP and 10 of 42 (23.8%) patients with TP (P > 0.05). Forward bending ankle dorsiflexion was possible at the final follow-up in 82.9% and 85.7% of LP and TP patients, respectively (P > 0.05). The AOFAS ankle-hindfoot scale, Karlsson scale, FAAM, and LEFS scores did not differ significantly between groups at the final follow-up (P > 0.05). The pre-fracture and final postoperative scores on these four instruments did not differ significantly in the LP or TP group (P > 0.05). The mean times to radiographic union progression were 13.5 ± 7.1 weeks and 15.1 ± 10.2 weeks in the LP and TP groups, respectively (P > 0.05). The mean times to implant removal surgery reaffirming solid union were 15.6 ± 5.5 months and 14.8 ± 4.9 months in the LP and TP groups, respectively (P > 0.05). Hardware irritation was detected in five patients in the LP group (12.2%) and three in the TP group (7.1%) (P > 0.05). One patient in the LP group and two in the TP group developed superficial wound infections, which resolved without further surgical intervention. CONCLUSION: Conventional TP remains a good option for the fixation of Danis-Weber type B distal fibular fractures, regardless of the biomechanical properties.

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