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Ulnar neuropathy associated with subdermal contraceptive implant.

Side effects are a common occurrence in the use of subdermal contraceptive implants (Norplant); approximately 70% to 80% of women using the device report abnormal uterine bleeding, headaches, acne, mastalgia, nervousness, appetite changes, and weight gain. Local implant site reactions range from 0.4% to 4.7%, with pain being the most common. Other insertion site complications include infection and implant expulsion. Only three cases have been described in the literature concerning implant site-related neuropathy, involving the sensory branch of the musculocutaneous nerve (lateral cutaneous nerve) in two cases and the antebrachial cutaneous nerve in the third case. We believe our report is the first case of an axonal loosing motor and sensory ulnar neuropathy associated with the removal of a subdermal contraceptive implant (Norplant). We review insertion site complications and their most likely causes. Also, we discuss alternative removal techniques for difficult-to-remove implants.