• Abhishek Kumar Thakur, Nabees Man Singh Pradhan, Pramod Devkota, Bidur Gyawali, and Prabhav Majgaiyan Pokhrel.
• Department of Orthopedics and Trauma Surgery, Patan Academy of Health Sciences, Lagankhel, Lalitpur, Nepal.
• JNMA J Nepal Med Assoc. 2022 Nov 2; 60 (255): 975977975-977.

UnlabelledKaplan's lesion is a rare complex metacarpophalangeal joint dislocation. A 7-year-old female child presented with pain, swelling and inability to move her right index finger. Her mother gave a history of sustaining a fall injury on the same hand around 3 weeks back. Radiographs showed a complex dorsal metacarpophalangeal joint dislocation. As the injury was already 3 weeks old at presentation, a few attempts at closed reduction were tried, under anaesthesia, which was unsuccessful. So, the patient underwent open reduction through a dorsal approach. At a 1-year follow-up, the patient was pain-free and had regained full range of motion of the index finger metacarpophalangeal joint. The differential diagnosis of Kaplan's lesion should be considered when a child presents with finger dislocation.Keywordsjoint dislocations; metacarpophalangeal joint; open reduction.

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