Abdominal strength after breast reconstruction using a free abdominal flap

Area of Science:

• Plastic Surgery
• Reconstructive Surgery
• Abdominal Wall Biomechanics

Background:

• Autologous breast reconstruction commonly uses free muscle-sparing TRAM (ms-TRAM) or DIEP flaps.
• DIEP flaps show lower donor site morbidity but may have higher complication risks and demand.
• Previous studies on abdominal wall strength after these procedures lack detailed comparisons.

Purpose of the Study:

• To compare abdominal muscle strength after unilateral breast reconstruction using free ms-TRAM versus DIEP flaps.
• To evaluate differences in concentric, eccentric, and isometric strength between the two flap types.

Main Methods:

• Isokinetic dynamometry was used to assess abdominal muscle strength.
• 32 patients who underwent unilateral breast reconstruction in 2003 were studied.
• Patients were divided into free ms-2 TRAM (15) and DIEP (17) flap groups.

Main Results:

• No significant difference in concentric or isometric muscle strength was observed.
• Eccentric muscle strength was significantly lower in the ms-TRAM group compared to the DIEP group (p=0.05).
• DIEP flap patients showed a clinically small but significant advantage in eccentric strength at maximal exertion.

Conclusions:

• DIEP flap reconstruction may preserve abdominal wall eccentric muscle function better than free ms-TRAM flaps.
• This suggests potential long-term functional benefits of DIEP flaps regarding abdominal wall integrity.
• Further research should explore long-term functional outcomes and patient-reported satisfaction.