Are there specific foods to help in the recovery of a tendon (tibialis anterior) injury?
Some people think that Glucosamine Sulphate can help improve cell regeneration so taking this might help. Also have you considered homeopathic remedies such as Arnica which can be particularly effective in reducing the effect of trauma to tissues. Otherwise a sensible well balanced diet is recommended. As regards the weightbearing, tibialis anterior is primarily a dorsiflexor of the ankle (meaning in pulls the foot upwards as opposed to the calf which plantarflexes the foot towards the ground). I would expect the plastercast will restrict ankle movement sufficiently to reduce the strain on the tibialis anterior tendon. Walking, within reasonable limits, would be good as the gentle stretching of the scar tissue will stimulate the collagen fibres in the tendon to grow in response to the forces they need to resist. Gentle activity will also help improve lower extremity circulation further promoting better healing. You will experience a certain amount of discomfort which is quite normal bu