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BackgroundFirst metatarsophalangeal joint (MTPJ) mobility is commonly assessed by its angular displacement (joint angle) or subjectively rated as ‘hypermobile’, ‘normal’ or ‘stiff’ by a clinician. Neither of these methods is ideal because displacement alone does not take into account the force required to displace the joint and subjective evaluation is not always reliable. This study presented a novel method to determine the passive quasi-stiffness of the first MTPJ. The reliability of the proposed method was also assessed. The first MTPJ passive quasi-stiffness of 13 healthy subjects were measured at two occasions, 7 days apart, by two testers (experienced and inexperienced). A tactile pressure sensing system was used to measure the force applied to dorsiflex the first toe by the testers. The torque (in Nmm) about the first MTPJ was calculated as the applied force (in N) multiplied by a moment arm (in mm), where moment arm was the length of the first proximal phalanx. A video camera recorded the motion of the first MTPJ, simultaneously with force measurements, to determine the joint angular displacement (in degrees) using the Dartfish software. The quasi-stiffness (in Nmm/degrees) was calculated as the slope of a graph where torque was plotted against first MTPJ angular displacement. Descriptive statistics of the first MTPJ quasi-stiffness were calculated. Intra-rater and inter-rater reliability were assessed using Bland and Altman plot, intraclass correlation coefficients (ICC), and standard error of measurement (SEM).ResultsFirst MTPJ quasi-stiffness of the subjects ranged widely from 0.66 to 53.4 Nmm/degrees. Intra-rater reliability for experienced tester was moderate (Session 1: 14.9 ± 14.6 Nmm/degrees, Session 2: 14.2 ± 8.5 Nmm/degrees, ICC = .568, SEM = 7.71 Nmm/degrees). Inter-rater reliability between experienced (12.6 ± 8.4 Nmm/degrees) and non-experienced (19.9 ± 9.2 Nmm/degrees) testers was poor (ICC = -.447, SEM = 11.29 Nmm/degrees).ConclusionsFirst MTPJ passive quasi-stiffness can be quantified from torque and angular displacement measurements using simple equipment in a clinical setting. The tester’s experience affected the consistency in joint quasi-stiffness measurements.Electronic supplementary materialThe online version of this article (doi:10.1186/s13047-016-0173-2) contains supplementary material, which is available to authorized users.

Foot care education is an important strategy in reducing lower limb complications. There is evidence that contemporary communication approaches can improve patient education outcomes. To inform the potential of such methods in diabetic foot education, we trialled a collaborative approach in patient education counselling in a podiatry clinic. We conducted a single-blind pragmatic randomised controlled trial on 52 diabetes patients who had an active foot ulcer. Participants were randomised to either collaborative education or traditional didactic education. Outcomes on knowledge and self-care behaviours were collected via a pre and post study questionnaire (max score: 75). The study ended at 12 weeks or when the wound healed prior. 42 (80.7%) participants completed the study. The collaborative patient education group had a significant increase in score post-study (38.8 ± 8.5) compared to pre-study (32.8 ± 6.9; P < .001). The control group had no significant increase in score post study. The difference in scores between groups had a moderate effect size (d = 0.54). The use of a collaborative approach in patient education was able to produce significantly greater increase in knowledge retention and self-care behaviours, without the need for additional consultation time in a podiatry clinic.