Distally based Chinese forearm flap in preventing impending necrosis from ring entrapment: Surgical case report

Introduction: Ring entrapment is a medical condition that can lead to severe consequences, including nerve damage, ischemia, and impending necrosis. The condition often necessitates surgical intervention to prevent complications such as amputation. Case presentation: We report a case of a 49-year-old male with impending necrosis of the right little finger due to steel ring entrapment. The patient presented with severe edema, signs of infection, and undetected finger saturation on pulse oximetry. Discussion: The Distally Based Chinese Forearm Flap (CFA) was used for soft tissue coverage, which has advantages like reliable vascularization and long pedicle rotation. The CFA flap has shown to be effective in restoring perfusion to the distal tissue and facilitating early wound closure. Conclusion: The use of CFA in this case resulted in a viable flap and good finger function, demonstrating its effectiveness in managing impending necrosis due to ring entrapment. © 2024 The Author(s)