A 17-year-old male patient with type 1 diabetes mellitus who was on insulin presented to our trauma centre emergency department (ED) complaining of ankle pain and swelling caused by an inversion injury experienced while walking. Following the event, he could not walk or stand on the injured foot. There has been no prior history of headaches, nausea, or vomiting. There was no previous history of chest or abdominal pain. He is hemodynamically stable, conscious, alert, and oriented. On the primary survey, his airway is maintained; he has good air entry bilaterally; there is no external bleeding; e-fast has been performed, and there is no free fluid, GCS 15/15, pupil reactive bilaterally, and no spinal tenderness. In the secondary survey, a left ankle exam revealed an obvious deformity and tenderness on the lateral aspect of the left ankle; nevertheless, there was no neurovascular compromise, and systemic examinations were normal. Morphine was administered to the patient for pain alleviation. Later, an x-ray of the foot and ankle was obtained, and it revealed a medial subtalar dislocation without a fracture (). After a closed reduction was performed while the patient was under sedation with ketamine, post-reduction radiographs revealed that the ankle had been correctly realigned and that there was no neurovascular compromise post-reduction, a below-the-knee back-slap was then used (). Before the procedure, the patient was told about the treatment plan and any risks and problems. After reduction, a computed tomography (CT) scan of the left ankle was carried out to rule out any possible fractures that would not have been seen on radiography. It showed modest soft tissue oedema with joint effusion but no evident fracture (). The following investigations were ordered: CBC, RFT, LFT, PT, and PTT. All of the tests came out normal. Following up with the orthopaedic clinic after three months, the patient still complained of pain and was unable to bear total weight - skin discolouration with oedema. An x-ray of the foot and ankle was taken, and compared with the previous one, it showed reduced density and a pseudo-permeative look of the visible bones, mostly indicative of osteopenia. The patient was ultimately diagnosed with a complex pain syndrome, a multifaceted condition often characterized by persistent and debilitating pain that does not align strictly with typical nociceptive or neuropathic patterns. This diagnosis necessitates a comprehensive and multidisciplinary approach to management, encompassing both physiotherapy and rehabilitation. The physiotherapy regimen aims to address the functional impairments and pain management, while rehabilitation focuses on restoring the patient’s ability to perform daily activities and improve quality of life. This integrated therapeutic strategy is crucial for effective management and recovery in cases of complex pain syndromes following orthopedic injuries.