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Use of the Oxford Foot Model in clinical practice
Journal of Foot and Ankle Research volume 1, Article number: O28 (2008)
The Oxford Foot Model (OFM)  has been used routinely in clinical practice to assess foot deformity during gait in our laboratory since 2004. Over this time, 163 patients with various pathologies have been assessed. The aim of this study was to determine the OFM's clinical relevance in defining dynamic foot deformity thereby assisting management decisions in two populations: idiopathic clubfoot and cerebral palsy/hemiplegia.
Idiopathic Clubfoot – 24 patients (7 female and 17 male, age range 6 to 24 years) have been seen – 12 bilateral, 7 right and 5 left clubfeet for a total of 36 feet. All patients were surgically treated to correct foot deformity at an early age with a posterior-medial release. Ankle range of motion and weight bearing foot posture were assessed in a standardised clinical examination (CE) and compared with foot model kinematics.
Cerebral Palsy – Hemiplegia – 70 patients (34 male and 36 female, age range 6 to 38 years) have been assessed. Six of these subjects were measured bilaterally.
Idiopathic Clubfoot – The findings from the OFM were used to identify the level of foot deformity in order to specify the type of surgery required, justify the type of casting appropriate to correct foot deformity, clarify the source of foot rotation (ie tibial, hindfoot, forefoot), and to corroborate clinical findings. The OFM influenced future management in 45% of the patients seen (Table 1).
The CE and OFM had best agreement in hindfoot plantarflexion and inversion, and forefoot adduction in relation to the tibia. Arch height was increased in 7 feet (cavus) and reduced in 8 feet (planus); clinically cavus was described in 16 feet and planus in 16 feet. Hindfoot internal rotation was present in 64% of feet post-surgically and was the sole cause of forefoot adduction in relation to the tibia in 33% of feet.
Cerebral Palsy – Hemiplegia
The OFM was used to assess dynamic foot motion to define indications and assess the outcome of surgical or orthotic management, Botulinum Toxin treatment and serial casting. The model was also used to monitor the progression of foot deformity, to clarify controversial findings from conventional lower limb kinematics, to determine the level of foot drop, and to corroborate clinical findings. The OFM directly influenced management in 71% of cases. Figure 1 summarises the findings of the foot model in this population.
Understanding the foot's dynamics during gait adds crucial information compared to the CE alone. The information gained from the OFM has become gradually more influential in the decision-making process. As with conventional gait analysis in its first steps, multi-segment foot kinematics is becoming increasingly important in clinical practice; in planning management and assessing results.
Stebbins , et al: Gait & Posture. 2006, 23 (4): 401-10. 10.1016/j.gaitpost.2005.03.002.
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McCahill, J., Stebbins, J. & Theologis, T. Use of the Oxford Foot Model in clinical practice. J Foot Ankle Res 1 (Suppl 1), O28 (2008). https://doi.org/10.1186/1757-1146-1-S1-O28
- Cerebral Palsy
- Botulinum Toxin
- Gait Analysis