Many factors can contribute to a successful result in hand surgery, as is the case in all orthopaedic surgery. An accurate diagnosis with emphasis on a complete history coupled with a detailed physical examination supplemented with the appropriate ancillary studies and proper preoperative surgical planning all are necessary in reaching this goal. An improper diagnosis such as in suspected carpal tunnel syndrome can result in continued symptoms. We will emphasize some of the more complex and difficult conditions in hand surgery that necessitate a high level of clinical acumen. It is hoped that by highlighting these details we may help others avoid common pitfalls and help to achieve an excellent result and avoid litigation. Although these are not the only problems involved in hand surgery, they are complex and can be missed easily.