Τετάρτη 9 Ιανουαρίου 2019

The relationship between gait and functional outcomes in patients treated with circular external fixation for malunited tibial fractures

Publication date: Available online 8 January 2019

Source: Gait & Posture

Author(s): Muhammad Ahmed Manjra, Jaco Naude, Franz Birkholtz, Vaida Glatt, Kevin Tetsworth, Erik Hohmann

Abstract
Background

Lower extremity fractures have a profound negative effect on a patient's gait and outcomes. Correction of deformity, and with it normalization of objective gait parameters, may result in better subjective and objective functional outcomes in patients treated with circular external fixation for malunited tibial fractures.

Aim

The purpose of this study was to investigate the relationships between gait parameters, patient reported outcome measures (PROMs), and health related quality of life measures in patients treated with circular external fixation for the correction of deformity related to tibial malunions.

Methods

This retrospective study included patients with posttraumatic tibial deformities, aged 14 to 65, with a minimum follow-up of 24 months following deformity correction. Patients with congenital deformities, head injuries, spinal cord injury, neurological disorders, or contralateral lower limb amputation were excluded. Functional outcomes were assessed by the Foot Function Index (FFI); Short Form 12 (SF-12); the EQ 5D; and the ASAMI score. Gait analysis was performed using Dartfish® and the Edinburgh Visual Gait Score (EVGS). The relationships between the EVGS and functional outcome scores were analyzed using Pearsons' moment correlations with Bonferroni corrections.

Results

Eleven patients with a mean age of 42 (range 23-57) were analyzed. The mean EVGS was 2.6+2.1, the mean FFI 29.6+33.4, the mean EQ5 Index Value 0.7+0.2, the mean EQ5 VAS 85.4+19.5, the SF12 mean Physical Component Score (PCS) 46.7+11.1, and the mean Mental Component Score (MCS) 55.2+7.5. The following relationships were strong and significant: EVGS and FFI (r = 0.7; P = 0.02), EVGS and PCS (r=-0.82; P = 0.02), and FFI and EQ5 (r=-0.79, P = 0.05).

Significance

The results of this study suggest that correction of deformity with realignment and restoration of normal anatomy was associated with improved functional outcomes and physical well-being. Patient reported quality of life is strongly associated with patient perceived functional outcome, but not with objective gait parameters.



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