एक 60 वर्षीय पुरुष मरीज जिसका बायाँ टोटल हिप रिप्लेसमेंट (कुल कूल्हा प्रतिस्थापन) हुआ था, उसे एक महीने पहले छुट्टी दी गई थी। वह क्लिनिक से संपर्क कर बाएं कमर और कूल्हे के क्षेत्र में तीव्र, निरंतर दर्द की रिपोर्ट करता है, और बताता है कि उसका बायां पैर दाहिने पैर से छोटा महसूस हो रहा है। निम्नलिखित में से किस जटिलता का संदेह होना चाहिए?

Which of the following statements are correct regarding the clinical sub-classifications of Obesity based on fat distribution? I. Central obesity is characterized by fat accumulation around the abdomen and is commonly described as 'apple-shaped'. II. Peripheral obesity involves fat distributed around the hips and thighs and is typically referred to as 'pear-shaped'. III. Central obesity is associated with a lower risk of metabolic diseases due to its specific fat distribution pattern. IV. Peripheral obesity is primarily identified by fat accumulation around the abdomen and carries a high metabolic risk. Choose the correct answer from the options given below:

Consider the following statements regarding dental caries: 1. Dental caries or tooth decay begins when bacteria acting on sugars produce alcohol that softens or demineralises the enamel. 2. Dental caries or tooth decay begins when bacteria acting on sugars produce acetone that softens or demineralises the enamel. 3. Dental caries or tooth decay begins when bacteria acting on sugars produce acids that soften or demineralise the enamel. How many of the statements given above are correct?