Edit account menu item in user menu
function hook_menu() {
  $items = array();
  global $user;
  $user_id = $user->uid;
  $items['user/' . $user_id . '/edit'] = array(
    'title' => 'Edit account',
    'page callback' => 'MYMODULE_user_edit',
    'access callback' => 'MYMODULE_user_edit_access',
    'menu_name' => 'user-menu',
    'type' => MENU_SUGGESTED_ITEM,
    'file' => 'user.pages.inc',
    'file path' => 'modules/user'
  );

  return $items;
}

function MYMODULE_user_edit() {
  global $user;
  $account = user_load($user->uid);
  return drupal_get_form('user_profile_form', $account);
}

function MYMODULE_user_edit_access(){
  global $user;
  return user_edit_access($user);
}


Try above code. :)