Entraînement en endurance à partir du membre inférieur sain chez des footballeurs amateurs opérés de ligamentoplastie de genou

Objective

To examine cardiorespiratory fitness changes in subjects having undergone knee surgery and to assess the benefits of one-leg cycling aerobic training program during the rehabilitation period.

Method

Two groups of 12 patients took part in this study. The control group profited from a five weeks conventional rehabilitation in day hospital without cardiorespiratory training. The second group profited in supplement from a one-leg cycling aerobic training program with the valid leg. The subjects were trained for 21 min, by alternating 3 min at 70% and 3 min at 85% of VO_2peak. They totaled 15 sessions spread over five weeks. The initial evaluation (T1) is carried out the first day of rehabilitation and the final evaluation (T2) at a distance within 35 days. The evaluation consisted in realizing a maximal graded tests starting from the valid leg.

Results

After five weeks of conventional rehabilitation, we record a reduction of peak power output (W_peak), peak oxygen uptake (VO_2peak) and peak minute ventilation (VE_peak), respectively of 11, 12 and 13% for the control group. On the other hand, in T2, the training group has on average identical maximum values and some of them increased (W_peak: +14%; VE_peak: +15%). The first and second ventilatory thresholds appear with higher intensities of exercises.

Conclusion

After knee surgery, conventional rehabilitation does not limit cardiorespiratory deconditioning. One leg cycling appears to be an adapted method to stop the effects of hypoactivity.     

Lombalgie chronique et réentraînement à l’effort : application de la notion de niveau de douleur cliniquement acceptable

Objectives

To search for predictors of reduced low back pain under the patient acceptable symptom state (PASS) at the end of a functional restoration program (FRP) in chronic low back pain, and then to compare the effectiveness of FRP depending on the rate of people returning to work, the acceptability threshold of pain has been reached or not at the end of the program.

Method

Open prospective study on 303 patients with chronic low back pain included in a FRP. An assessment of the deficiencies (finger-tip-to-floor (cm) and Schöber tests (cm), VO2 max (l/min), Shirado and Sorensen tests (seconds), lumbar and radicular VAS (0-100), the functional disability (Wadell and Quebec scales (0-9 and 0-100), and the psychological status (Beck and Hamilton scale (0-35 and 0-30), HAD scale (0-21), FABQ (0-42 and 0-24)) was conducted at the beginning and end of the program. Data on the work were also collected (arduous physical labor, work-related accident or not, sick leaves or not and length, return to work at the end of the program). The variables associated with a PASS at the end of the FRP and a correlation between the level of pain and the return to work were sought.

Results

The parameters were significantly improved : finger-tip-to-floor test (−17,5 ± 16,2), Schöber test (−0,5 ± 5,4), lumbar VAS(−6,3 ± 23,6), VO2 max (0,14 ± 0,4), Wadell (−1,3 ± 2,4), Quebec (−10,5 ± 17), Beck D (−3,1 ± 4,5), Beck A (−2,5 ± 4,3), HAD D (−2,4 ± 4,7), HAD A (−1,3 ± 3,8) et FABQ1 (−5,7 ± 11,6), FABQ2 (−3,9 ± 9,6) scores, endurance of the flexor (35 ± 63,83) and extensor (44,8 ± 112) spine. Patients reaching the PASS for pain level return significantly more to work (73% versus 52%). Five parameters indicative of a reduction of back pain under the PASS were identified : lumbar VAS and endurance of the flexor spine at the beginning, changes in finger-tip-to-floor test, radicular VAS and Beck score for anxiety.

Conclusion

The PASS appears to be a relevant concept associated with a successful return to work for patients with chronic low back pain and severe disability after a program of FRP.     

Influence de l’anesthésie locorégionale sur la récupération musculaire après ligamentoplastie du genou

Anesthetic agents used for motor blocks have local toxic effects, demonstrated in vitro and in animal models. Little work has been done on the clinical impact of this toxicity. In a context of physical medicine and sports medicine, we examined several patients who had undergone knee ligamentoplasty for tears of the anterior cruciate ligament (ACL). For these patients, functional recovery was correlated with recovery of quadriceps strength. The purpose of this study was to analyze the impact of peripheral nerve blocks on quadriceps recovery at 5.5 months after knee ligamentoplasty.

Patients and methods

We conducted a retrospective analysis of 69 patients divided into three groups: 33 who had had no locoregional anesthesia (NB), 24 had femoral nerve block (FNB) and 12 had an iliofascial block (IFB). Our main outcome criterion was relative loss of quadriceps muscle force compared with the healthy side using isokinetic measures five to six months after ligamentoplasty. Isokinetic parameters were concentric Moment of Force Maximum (MFM) measured at 60°/s and 240°/s.

Results

Loss of concentric force at 60°/s was, on average: 24.7 ± 14.8% in group NB, 17.2 ± 13.9% in group FNB, and 19.7 ± 10.7% in group IFB. The difference between the three groups was not significant (P = 0.208). At rapid speed (240°/s) the deficit was on average: 23.111% in the group NB, 14.4 ± 10.5 in the group FNB and 13.4 ± 11% in the group FNB. The difference was significant only between NB and the two other groups, FNB and IFB. The quadriceps deficit was significantly greater in the patients who did not have a nerve block.

Discussion

Surprisingly, this study demonstrated result contradicting the initial hypothesis. Our finding showed that the local toxicity of anesthetic blocks did not have a negative clinical impact on muscle force, but that there was a positive effect on the quality of quadriceps recovery during the time studied. The conclusions of this retrospective preliminary study, with the resulting methodological limitations, must be re-evaluated with other work.     

Influence du type d’orthèse de genou sur l’évolution clinique postopératoire d’une chirurgie du ligament croisé antérieur chez le sportif

Objectives

To establish the influence of the type of brace on the postoperative clinical evolution after anterior cruciate ligament (ACL) surgery in competitive sportspeople.

Methods

The authors prospectively followed the evolution of three populations of ACL reconstruction: one who received a functional brace, the other a rigid brace and last no brace. The three groups followed the same rehabilitation program. The clinical parameters of evaluation were pain, perimeter patellar joint, range of motion, muscular atrophy, locking the quadriceps, and the quality of walking. We also used the IKDC subjective Knee Evaluation Form and PPLP scoring scale.

Results

There is no clinically significant difference at about a month of surgery between the three groups (407 patients). There is no difference with the PPLP scoring scale. No repeat rupture is occurred postoperatively. There is a significant difference in the IKDC subjective (P = 0.03) between the group with functional brace and rigid brace.

Conclusion

With the same active rehabilitation program, the clinical evolution is identical with or without brace. The only difference is subjective (IKDC subjective Knee Evaluation Form).     

Rééducation accélérée après ligamentoplastie par la technique DIDT par un protocole simple et adapté à chacun

With most procedures of rehabilitation following reconstruction of the anterior cruciate ligament that was treated though the technique of ligamentoplasty using gracilis and semi-tendinous, the hamstring can’t resume activity until four to six weeks after the operation. Comparing the engraftment of post-traumatic muscle damage, the described rehabilitation procedure is an accelerated procedure that uses early eccentric strengthening of the hamstring starting on day 8. This is achieved first by manual resistance until day 21 then on a hamstring chair from day 21 to day 45. The aim of such a treatment is not to resume sporting activity more quickly, but to ensure that the conditions for recovery are optimized. The described treatment also presents some limitations and should therefore be applied with caution so as not to jeopardize the ultimate recovery of the ligament.     

Contrôle de l’équilibre et port unilatéral d’une orthèse rigide de cheville. Partie I : effets sur des sujets sains évalués debout en unipédie

In order to assess the effects induced by wearing a rigid ankle orthosis, 14 healthy adults, without traumatic previous injuries at this level, were tested in a one-legged postural task. The subjects stood upright on a force platform and were required to remain still, eyes open. Ten trials lasting 32 s were recorded in a random order in two conditions: with a rigid orthosis model worn at the ankle level of the supporting leg (Thuasne, Ligastrap Immo^®) and with an elastic stocking. Balance strategies have been quantified by studying the centre of pressure (CP) trajectories, that is, the successive positions of the resultant reaction forces, and processed through a frequency analysis. The results indicate that slight decreases occur for the CP displacements intervening along the medio-lateral axis whereas statistically significant trends were found for those intervening along the anteroposterior one. This finding a priori suggests that wearing a rigid orthosis affects one-legged standing in healthy individuals but mainly along an axis not usually weakened by sprained ankles.     

Contrôle de l’équilibre et port unilatéral d’une orthèse rigide de cheville. Partie II : effets sur des sujets sains évalués debout en bipédie

In order to compare the effects induced by the unilateral wearing of a rigid orthosis (Thuasne, Ligacast Immo^®) in comparison to a reference model consisting of an elastic stocking, balance control strategies of 14 healthy subjects have been evaluated in two-legged standing. To this aim, 10 trials lasting 32 s have been recorded through a device made of two separate force platform allowing the separate measurement of the reaction forces intervening under each foot. Balance strategies have been assessed from the centre of pressure trajectories issued from the left (CP_G) and right feet (CP_D) and, through a calculation, from the resultant CP (CP_Res). These various trajectories, projected along mediolateral (ML) and anteroposterior (AP) axes, have been then analysed in the frequency domain. If no difference has been observed for the CP_Res trajectories, the separate analysis of each support has furnished statistically significant results for the CP trajectories measured under the foot wearing the orthosis since the amplitudes decrease along both ML and AP axes. Contrary to what was observed in the previous study conducted in one-legged standing, with effects occurring only along the AP axis, these results appear thus in better accordance with the objectives of an orthosis since diminishing the involvement of the lateral ligaments. This kind of protocol appears thus more relevant for characterising in situ the effects of an orthosis made of two rigid shells.     

Rôle de l’équipe paramédicale dans la réalisation du contrôle ciblé de la température après un arrêt cardiaque récupéré

Therapeutic hypothermia, also called targeted temperature management, is increasingly used in the intensive care unit (ICU), based on its assessed neuroprotective effects against ischemia-reperfusion-induced brain damage. Targeted temperature management is indicated in comatose adult patients after cardiac arrest if successfully resuscitated from a witnessed out-of-hospital cardiac arrest of presumed cardiac cause with an initial rhythm of ventricular fibrillation or non-perfusing ventricular tachycardia and in a stable hemodynamic condition. Patients after in-hospital cardiac arrest or with other initial rhythms may also benefit. When indicated, therapeutic hypothermia should be quickly performed and tightly controlled. Both surface and core cooling methods target a body temperature of 32 to 34 °C. Thus, it is mandatory to know how to simply manage the routinely available techniques in order to perform hypopthermia as soon as possible, being aware of all side-effects that may alter the expected benefits. Therefore, implementing hypothermia in the ICU involve the whole medical and paramedical staff.