A 4-year-old boy, with no known medical illness, came to us in our out-patient department with a gross swelling over the right forearm. He had a history of the right forearm cellulitis associated with suspected compartment syndrome at 6 months of age which was treated with incision, drainage, and fasciotomy. Fasciotomy site healed completely with secondary intention. On examination, the patient had swelling and tenderness on the dorsal ulnar surface over the underlying bone with no local rise of temperature. Motion ranging from 70° supination, 80 degrees pronation, and elbow flexion from 0 to 130°. X-ray examination revealed focal opacity with periosteal reaction in proximal one-third of ulna (). MRI findings were suggestive of periosteal elevation with underlying abscess (). After that, the patient was taken for surgical debridement and evacuation of pus under general anesthesia. Ulna was exposed in the internervous plane between flexor carpi ulnaris (FCU) and extensor carpi ulnaris (ECU). Intraoperatively, the proximal ulna failed to show any osteomyelitic changes. Ulnar cortex was drill holed by 2 mm k-wire, no pus discharge was noted indicating absence of medullary collection at that time. Localized opacities were seen in ECU and FCU, from which sample was sent for culture sensitivity and histopathology. Methicillin resistant coagulase negative Staphylococci (MRCONS) was isolated and cultured. Antibiotics (Inj. Linezolid as per weight) were given and limb was protected and immobilized in an above elbow (AE) cast for 6 weeks. Postoperatively after 1 month, the patient developed a fracture just adjacent to drill hole location with AE cast in situ (). Further, fracture was managed with immobilization in AE cast for 6 weeks. Subsequently, fracture failed to unite and a diagnosis of frank non-union was made at the drill hole induced fracture site () after a period of 6 months. At the time, white blood cell count and ESR (Erythrocyte sedimentation rate) were 5100/mm3 and 7 mm/h, respectively, with no other signs of infection. With persistent non-union for 6 months, the patient was taken up for surgery, where the non-union site was exposed and canal opened. No granulation tissue or other signs of inflammation were noted. Proximal end of distal fragment at the non-union site was thin and conical in shape with a gap of around 1 cm. 6.5 cm of fibula was excised with from the right leg, split, and wrapped around the non-union site. 6.5 cm of fibula was excised using minimally invasive technique [] and split which were wrapped around non-union site. The site of osteotomy for fibula was marked 8 cm from distal fibula and 6 cm from proximal end. Two incisions were taken. Spatula was passed between the soleus and fibular muscles and step by step subperiosteal detachment performed cautiously. Then, the osteotomy was performed proximally and distally using oscillating saw. The graft was grasped with clamps and then the graft was mobilized on its axis by rotating it and the bone graft extracted. Iliac crest cancellous bone graft was harvested and placed at the non-union site to enhance union. To hold fibula in place, vicryl cerclages were taken. The construct was stabilized by a 2 mm intramedullary Titanium Elastic Nailing System (TENS) nail. Postoperatively, AE slab was given for 4 weeks for immobilization. Two doses of IV antibiotics (inj. Cefuroxime as per weight) were given postoperatively. Post-operative X-ray is shown in (). Here, () shows complete union of ulnar bone defect after 1 year. The TENS nail was removed 1.5 years postoperatively with a both clinical and radiographic examination demonstrating complete bony union (). Active range of motion at that time was full, unrestricted and the wound had completely healed (). At a follow-up of 1.5 years, there was no donor site morbidity at ankle noted ().