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So is it faster or slower than humans?
Healing of bone in reptiles takes at least 6-18 mo.
ORTHOPEDICS
Long bone fractures in reptiles are usually the result of trauma or metabolic bone disease. Most fractures occur after relatively low impact trauma making the incidence of comminuted fractures low and because most reptiles have tough skin they are usually not open fractures. Little information is available regarding bone healing in reptiles; however, it appears that it occurs at a significantly slower rate compared with birds and mammals. Healing time for traumatic fractures is generally 6-18 mo. Pathologic fractures from nutritional secondary hyperparathyroidism seem to heal much quicker (6-8 wk).
General principles of fracture fixation apply to reptile patients - rigid stabilization and anatomic alignment with minimal disruption of callus and soft tissues. Many factors must be considered when deciding on the method of fixation to be used. The forces exerted on the fracture (bending, compression, rotation, and shear) must be neutralized to promote healing. The more forces that must be neutralized by the fixation, the higher the incidence of complications and failure. Practical consideration include the cost of the materials, ease of application, availability of equipment, and the surgeon's level of experience with various fixation devices. In many cases some degree of malalignment may be acceptable. The patient's size and conformation may influence the type of device used and how it is applied. The patient's metabolic status may preclude a surgical procedure for orthopedic repair. Finally, financial concerns are often the major factor to be considered.
A wide variety of splinting and casting techniques have been used successfully. Anesthesia is recommended during the application of external coaptation. All forms of external coaptation should be monitored closely for signs of vascular compromise, soiling, slippage, or other problems which may require splint replacement. Soft, conforming cast padding (Specialist Cast Padding, Johnson & Johnson, New Brunswick, NJ; Webril, Kendall Co., Boston, MA) and conforming roll gauze (Conform, Kendall Co., Boston, MA) work well for the initial padding layers. These materials should be cut to an appropriate width for the size of the patient. Using a roll that is too wide will result in a lumpy bandage. The bandage may be reinforced with wood applicator sticks, tongue depressors, aluminum rod, light weight casting material, or other substance that will add bending stability. Most of these do not conform to the normal angles of a reptile limb. Orthoplast (Johnson & Johnson, New Brunswick, NJ) and Hexcelite (Hexcel Medical, Dublin, CA) are firm at room temperature but when heated in water become malleable. This allows the material to conform closely to the configuration of the limb. Orthoplast is a solid sheet while Hexcelite is a webbing available in roll or sheet form. The Hexcelite is much easier to conform but is not as rigid when cool.