Not to make light of any ROM measurement, but THIS was not an issue during my recovery and it improved over time.
I have no issues at almost six years out... I did at 3 months, 6 months, even I year and am better now than at 2 year mark.
Jaycey's post was regarding flexion and Rom improving for Knee Replacement members, but the premise is the same...
Where you are now is not where you can be if you are patient, mindful, and allow your body to heal... not only from joint replacement, but from the time pre-op where likely you suffered from bad ROM, bad posture, bad gait... Lots of muscles and tendons involved in both postop and pre-op.