I recommend Yonsei Woori Hospital in Jamsil.

I went there on a friend's recommendation. It's a new building, so it's incredibly clean and comfortable. Jamsil Yonsei Woori Hospital offers treatment for joints, spine, pain, internal medicine, and neurosurgery. I went there for shoulder pain, and the ligament injection was very effective. My pain was significantly reduced. A friend of mine received manual therapy and said it was effective. I highly recommend Jamsil Yonsei Woori Hospital.