Fig. 2. Showing AcMTn of front of right forearm, lying lateral to the FDPTn. Attachment of bipennate 1st LB can be seen from its deeper aspect lying superficial to ADP. AcMTn, accessory muscle tendon; FDPTn, tendon of the Flexor Digitorum Profundus; 1st LB, first lumbrical; ADP, adductor pollicis; DTs, digital tendons; HThr Ms, hypothenar muscles; Thr Ms, thenar muscles.
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