Seoul has said the purpose of the complex was to develop a joint industrial park where South Korean companies could manufacture their products using North Korean labour.
The military needs such systems, particularly when soldiers are involved in international coalitions, joint humanitarian and peacekeeping missions that require complex resource sharing requirements.
The East and North Hertfordshire Clinical Commissioning Group (CCG) said it had dropped referrals of joint replacements, which were the "most complex surgical treatments" handled at the centre.