Isokinetic muscle strength and knee function associated with double femoral pin fixation and fixation with interference screw in anterior cruciate ligament reconstruction

Abstract

The significant muscle strength outcome of the interference screw group found in this study gives initial evidence that this fixation technique is useful for athletes that may need accelerated rehabilitation. Early return to sports ability signaled by isokinetic muscle strength is of clinical relevance as it is one of the main goals for athletes' rehabilitation.

Isokinetic muscle strength and readiness to return to sport following anterior cruciate ligament reconstruction: is there an association? A systematic review and a protocol recommendation

“…Seventy-five remaining studies were reviewed in full text and 36 of these studies were excluded: 15 studies evaluated strength at more than 24 months following ACLR, 8 studies evaluated knee flexors only, 9 evaluated knee extensors only, 1 study repeated data used in a previous study, 1 study evaluated strength lying down and 2 studies evaluated isometric strength only. A final yield of 39 studies3 6–9 21 23 29 37–67 were included in this systematic review as presented in the flow chart (figure 1). …”

“…Seven were classified as good,43 45–47 53 55 66 26 as fair3 5–9 21 23 37–39 41 42 44 48–50 52 54 56 60–67 and 6 as poor 29 40 51 57–59. Thirty studies did not include all important adverse events that could have an effect on the intervention reported (criterion 8),5–7 9 21 23 29 38–40 42–52 54 56 57 59 60 63 64–67 23 studies did not adequately describe the source population and how they were recruited (criterion 11 and 12),3 5 6 8 21 37–40 42 44 48–52 54 57–60 64 65 24 studies did not describe if the source population was recruited in the same time period (criterion 22),3 8 9 23 29 37–42 44 48–52 54–58 63 64 66 and 29 studies did not report sample size calculation (criterion 27) 3 6–8 21 23 29 38–44 49–53 56–61 63–67. Other criterion, such as criterion 22 and 23, were not commonly fulfilled due to most studies not being randomised, while criterion 14 and 15 were not commonly reported due to lack of blinding.…”

“…Mode of contraction and angular velocity were reported in all the studies reviewed, but not all studies reported all aspects of their protocols. Of the 39 studies, 11 (28%) did not report number of repetitions,7 9 39 43 45 46 52 54 58 61 66 25 (64%) did not report range of motion,3 6–9 29 38 39 41 43 47–51 54 55 57 58 60 61 63 64–66 and 29 (74%) studies did not report if gravity correction was used 3 6 7 9 21 29 37 38–45 47 49 50 53–55 57 58 60 61 64–67…”

“…As muscle strength deficit has been associated with the potential risk of future knee injury, increasing muscle strength of the quadriceps and hamstrings is a key factor for successful RTS after ACLR surgery 16–19. Strength evaluation tests following ACLR are commonly performed as part of a battery of tests in clinical and research settings 20 21. Isokinetic dynamometry provides an objective measure of muscle strength and is used in sport, research and clinical settings 20 21.…”

“…Strength evaluation tests following ACLR are commonly performed as part of a battery of tests in clinical and research settings 20 21. Isokinetic dynamometry provides an objective measure of muscle strength and is used in sport, research and clinical settings 20 21. A criticism of isokinetic dynamometry is that it lacks functional relevance to sporting and training situations.…”