I've just been reading the lengthy PDF given to me after my recent hip operation. It's obviously about fractures, but this section seems relevant to LL:
"You can gradually resume more normal physical activities at three months, for example: swimming, cycling, bowls, gardening and dancing. Jogging has high impact and may cause a hemi-arthroplasty or total hip replacement to fail earlier, so we advise against regularly running a large number of miles. Being active is good for building your bone and muscle strength to reduce future problems with osteoporosis."
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