Evaluation of arm and shoulder mobility and strength after modified radical mastectomy and radiotherapy.
Seventy-five women, of whom 30 had received postoperative radiotherapy, were tested for range of motion (ROM) and shoulder strength with a goniometer and an isokinetic device (Orthotron II), respectively. On the individual level, irradiated patients exhibited significantly reduced range of motion (varying from p < 0.05 to p < 0.001) for all movements compared with the non-operated side. In contrast, in the non-irradiated patients only flexion was significantly reduced (p < 0.05). The same individual pattern was evident for shoulder strength where all movements except external rotation were significantly reduced in irradiated patients (varying from p < 0.05 to p < 0.001). Non-irradiated patients exhibited a significant reduction in shoulder strength for flexion and abduction (p < 0.05), whereas other movements were less affected. The observed differences in ROM and strength were less pronounced when analyzed on a group level, but were still significant for ROM (p < 0.001) for flexion and abduction. Group level analysis also showed reduced shoulder strength for all movements but only rotation was significantly (p < 0.01) impaired.
Blomqvist
Lennart
L
Plastic Surgery Unit, Center for Surgical Sciences, Karolinska Institutet and Huddinge University Hospital, Stockholm, Sweden. Lennart.Blomqvist@cfss.ki.se
Stark
Birgit
B
Engler
Natacha
N
Malm
Maj
M
D000328:Adult; D000368:Aged; D001132:Arm / Q000503:physiopathology*; D001943:Breast Neoplasms / Q000532:radiotherapy* / Q000534:rehabilitation / Q000601:surgery*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009119:Muscle Contraction / Q000528:radiation effects; D005082:Physical Exertion; D016059:Range of Motion, Articular / Q000528:radiation effects*; D012782:Shoulder / Q000503:physiopathology*