Does the Addition of Tramadol and Ketamine to Ropivacaine Prolong the Axillary Brachial Plexus Block?

Table 3

Types of surgery.

Types of surgery	Group R; 𝑛=12	Group RT; 𝑛=12	Group RK; 𝑛=12
Tendon reconstruction	3	4	7
Contracture release	2	2	0
Nerve repair	5	2	2
Internal fixation	1	2	2
Mass excision	1	2	1