We had listed this set previously but without a specific description. Thanks to the kind help of orthopedic surgeon, Dr. Tom Karnezis, whom we paraphrase and quote below, we’ve learned that this a device employing skeletal traction pins to “keep the bones close to each other and at length allowing them to get “sticky” and heal in alignment  and proper rotation. Skeletal traction pins were usually inserted at bedside to provide balanced skeletal traction.Once the bone heals with +?- 6 weeks of bed rest then the patient can be placed in a cast to allow the mending bone fracture (callus) to heal…” The large cylindrical instrument with a power cord is a drill. The last image, shows how this set was employed. The two bow-shaped instruments are Kirschner bows. The first link discusses Kirschner’s work and has drawings of this instrument in use.Individually,  modern version of the Kirschner bow along sell today for around $1400.00! See second link below.

https://pmc.ncbi.nlm.nih.gov/articles/PMC2739562/

https://medicalsupplygroup.com/collections/traction-bows?srsltid=AfmBOooQ6IoaR0Vdx5-BXrxBIpcQijYsTn4C3VhsyK8JQTzTrngIS7GH