Hamstring muscle strength before and after anterior cruciate ligament reconstruction: A systematic review

摘要: BACKGROUND: The effect of hamstring tendon grafting during anterior cruciate ligament reconstruction (ACLR) on residual muscle strength remains unclear. OBJECTIVES: To identify if deficits exist after ACLR using the ipsilateral semitendinosus and gracilis tendons (STG) in absolute relative terms, ascertain pre-operative influences post-operative outcomes. METHODS: A search was performed five databases; MEDLINE, SPORTSdiscus, Cinahl, AMED Cochrane. Original articles that reported both isokinetic testing with STG grafts were evaluated, selected critically appraised. RESULTS: Eleven studies met inclusion criteria included review. Hamstring peak torque (PT) reconstructed leg compared to contralateral side ranged from 10–19% 6.4–12.6% at six 12 months, respectively. Minimal year follow up. For values mean PT identified terms low 96 Nm 60 ◦ /s (Range 77–121.8 Nm) just one study normalising body weight (PTBW). Only three pre- results two identifying similar reductions 8.6–9% operated limb months. CONCLUSION: Deficits found up post-operatively but appear resolve by years. It is recommended future report PTBW allow for better interpretation comparisons against normative data. More research needed examine influence results.