German to English Medical Medical (general) Orthopedics

From German medical report, orthopedics, patient has joint pains all over body:

"li. Knie frei bewegl., re. Daumen DS,
SNM li.>re. verspannt, li.Schulter endgr. Spannung b. Abd., re. Schulter frei bewegl., DLÜ bds. Spannung..."

What does "DLÜ" stand for and what is the translation in English?

Please see my other question on "SNM".

Thanks,

Stephen