Case: A 45 year old male, >1 year status post left elbow lateral debridement for lateral epicondylitis, presented with a two week history of a progressive, tender mass on the lateral aspect of his left elbow. MRI showed evidence of a defect in the joint capsule, consistent with the formation of a seroma. The patient underwent revision of the left lateral epicondyle debridement with ECRL/EDC tendon repair and capsular reconstruction. Conclusion: Tendon repair and capsular reconstruction is an effective and successful method for the treatment of a seroma caused by leakage of joint fl uid after lateral epicondylar debridement.