also some exercises and general fitness advise for such conditions (again many thanks for permission from Ian Horsley UK), tom c90:

Foot Fractures Rehabilitation


Rehabilitation exercises
Rehabilitation depends on the severity of the injury. Most rehabilitation for foot fractures includes rest and avoiding activities that stress, strain, or pressure the injury site. During rehabilitation, athletes can maintain cardiovascular fitness through aerobic activities such as cycling or swimming.
Of course, if your fracture requires surgery to put the bone back in place, your rehabilitation will be prescribed by your doctor and may vary depending on the severity of the injury.
Strengthening the muscles around the foot fracture hastens recovery and prevents recurrence of the injury. Athletes with a history of foot fractures should make these exercises part of their pre-training warm-up. Although the exercises are described for the injured-side foot or leg, you should also do them on the uninjured side. This is especially encouraged for athletes with recurring incidents of foot fracture, as the exercises are preventive as well as rehabilitative.
•&nbsp &nbsp &nbsp &nbsp Hurdler's stretch
Sit on the floor with the injured-side leg fully extended and the opposite leg bent at the knee so that the sole of the uninjured-side leg is against the inner thigh of the injured-side leg. Keep the extended leg straight while reaching for and grasping the toes of the injured-side foot. If the toes cannot be reached, put a towel around the underside of the injured-side foot and grasp its ends with the extended hand. Hold this position for 5 to 10 seconds. Relax for 5 seconds. Perform this cycle 10 to 15 times, 3 times daily.
•&nbsp &nbsp &nbsp &nbsp Foot and lower leg extension
Kneel on the floor with toes pointed backward and sitting on heels. Gradually lower your full body weight. Reach backward with the injured side hand and grasp the injured-side toes, pulling them gently upward and hold this position for 5 seconds. Release the grip on the toes and raise some of the body weight from the heels. Rest in this position for 5 seconds. Perform this cycle 5 times, 3 times daily.
•&nbsp &nbsp &nbsp &nbsp Arch stretch
Sit erect on a table or bed with the injured-side leg crossed over the opposite leg. Grasp the toes of the injured-side foot with the hand of the same side and the heel of the injured-side foot with the opposite hand. Gently pull the toes toward the shin. Hold this position for 5 seconds, then relax hands and rest for 5 seconds. Perform this cycle 5 times, 3 times daily.
•&nbsp &nbsp &nbsp &nbsp Top of foot stretch
Sit erect on a table or bed with injured-side leg crossed over the opposite leg. Grasp the top of the injured-side foot with the hand of the same side and the toes of the injured-side foot with the opposite hand, with fingers over the top of the injured foot. Gently pull the toes of the injured-side foot toward the ball of the foot in a curling motion and hold this position for 5 seconds. Relax hands and rest for 5 seconds. Repeat this cycle 5 times, 3 times daily.

Strengthening exercises
Try the following exercises for strengthening the muscles of the lower leg and those that control movements of the foot:
•&nbsp &nbsp &nbsp &nbsp Toe raises
Stand with hands resting on a chair back. Slowly elevate to the toes of both feet and hold this position for 10 to 15 seconds. Return to start position and rest for 5 seconds. Perform 20 times, 3 times daily.
•&nbsp &nbsp &nbsp &nbsp Single toe raises
After one week, or later if occasional pain is present, perform single toe raises. Stand to the side of a chair with one hand resting on the chair back. Bend the knee on the uninjured side and raise the foot from the floor. Slowly elevate to the toes of the opposite foot. Hold this position for 10 to 15 seconds. Return to start position and rest for 5 seconds. Perform this cycle 20 times, 3 times daily.
•&nbsp &nbsp &nbsp &nbsp Ankle flexion
Sit on a table with lower legs dangling over the side. Stabilize your body by holding the table edge with both hands. Turn the foot of the injured side upward and inward and hold this position for 5 to 10 seconds. Return to the start position and rest for 5 seconds. Turn the injured side foot upward and outward and hold for 10 seconds. Return to the starting position and rest for 5 seconds. Repeat this sequence 10 times, 3 times daily. Begin with no resistance and gradually add weight to the ankle over time. Add weight in 1Kg increments until you reach 8Kg .
•&nbsp &nbsp &nbsp &nbsp Side toe raises
Lie on your side on a table or bed with the injured-side leg uppermost and the uninjured leg bent at the knee with the uninjured side foot under the injured side calf. The injured-side foot should be extended over the end of the table or bed by a few inches. Relax the injured-side foot, then raise the injured-side toe upward and outward and hold this position for 5 seconds. Relax the injured-side foot. Rest for 5 seconds. Repeat this sequence 10 times, 3 times daily. Begin with no resistance and add weight to the forefoot with training time by 1Kg until 4Kg pounds can be managed.

Alternative exercises
During the period when normal training should be avoided, alternative exercises may be used. These activities should not require any actions that create or intensify pain at the site of injury. They include:
•&nbsp &nbsp &nbsp &nbsp swimming
•&nbsp &nbsp &nbsp &nbsp water running
•&nbsp &nbsp &nbsp &nbsp stationary bicycle (add resistance gradually from one session to the next, as pain allows).

When can I return to my sport or activity?
If the fracture is treated immediately following initial symptoms, athletes can usually return to competition within 4 to 6 weeks.
A foot fracture that is ignored by an athlete until the pain ultimately prevents him or her from competing, may take 8 to 10 weeks to fully heal. In any case, return to full participation in his or her sport must be delayed until all symptoms disappear, not only at rest, but when performing the skills and activities inherent to the sport or activity.
The goal of rehabilitation is to return you to your sport or activity as soon as is safely possible. If you return too soon, you may worsen your injury, which could lead to permanent damage. Everyone recovers from injury at a different rate. Return to your activity is determined by how soon your fracture recovers, not by how many days or weeks it has been since your injury occurred.
You may safely return to your sport or activity when, starting from the top of the list and progressing to the end, each of the following is true:
•&nbsp &nbsp &nbsp &nbsp You have full range of motion in the injured foot compared to the uninjured foot.
•&nbsp &nbsp &nbsp &nbsp You have full strength of the injured foot compared to the uninjured foot.
•&nbsp &nbsp &nbsp &nbsp You can jog straight ahead without pain or limping.
•&nbsp &nbsp &nbsp &nbsp You can sprint straight ahead without pain or limping.
•&nbsp &nbsp &nbsp &nbsp You can do 45-degree cuts, first at half-speed, then at full-speed.
•&nbsp &nbsp &nbsp &nbsp You can do 20m figures-of-eight, first at half-speed, then at full-speed.
•&nbsp &nbsp &nbsp &nbsp You can do 90-degree cuts, first at half-speed, then at full-speed.
•&nbsp &nbsp &nbsp &nbsp You can do 10m figures-of-eight, first at half-speed, then at full-speed.
•&nbsp &nbsp &nbsp &nbsp You can jump on both feet without pain and you can jump on the injured foot without pain.