M. Engelhardt

Justus-Liebig-Universität Gießen, Gieben, Hesse, Germany

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Publications (129)55.83 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: The purpose of this study was the evaluation of knee laxity in the ACL-deficient knee with combined meniscal tear, meniscal suture and partial medial meniscectomy.
    International Orthopaedics 11/2014; · 2.32 Impact Factor
  • K Keller, M Engelhardt
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    ABSTRACT: Backround: Knee trauma with arthrogenic muscle inhibition (AMI) lead to muscle weakness. The aim of this study was to analyse the intensity of AMI after meniscus and cartilage injuries and to investigate the association between age, BMI and severity of cartilage leasions with AMI. Patients and Methods: 48 patients with meniscus or cartilage injury were preoperatively interviewed and examined for isometric maximum force values of the extension muscles of the knee joints. We analysed AMI as comparison of maximum isometric force values between healthy and injured leg by use of Wilcoxon matched pairs test. Moreover a regression analysis was done to assess the association between age, BMI and severity of cartilage lesion with AMI. Results: Trauma of the knee joint with meniscus or cartilage injuries led to a 23.6 % reduction of maximum force values of injured in comparison to healthy leg (460.1 ± 223.6 N vs. 601.9 ± 224.6 N, P < 0,000001) in mean. Regression analysis did not show associations between age (β -2.645, P = 0.345), BMI (β 2.268, P = 0.792) or severity of cartilage damage (β -13.527, P = 0.670) with AMI. Conclusions: Trauma of the knee joint with meniscus or cartilage damage cause an AMI with 23.6 % force reduction. We could not identify an association between age and AMI.
    Sportverletzung Sportschaden : Organ der Gesellschaft fur Orthopadisch-Traumatologische Sportmedizin. 08/2014;
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    ABSTRACT: To evaluate knee laxity after anatomic ACL reconstruction with additional suture repair of a medial meniscus tear.
    Knee Surgery Sports Traumatology Arthroscopy 05/2014; · 2.68 Impact Factor
  • Casper Grim, Martin Engelhardt
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    ABSTRACT: The treatment of glenohumeral joint instability plays an important role in sports medicine. The instability of the shoulder includes various degrees of severity from symptomatic hyperlaxity, to subluxation, to dislocations. In this article, specific aspects of adequate patient selection are discussed with regard to treatment options. Certainly, the different available classifications do not describe all forms of instability as also mixed forms occur frequently. Nevertheless, they provide a vital guide and assistance during the treatment finding process. Furthermore, different treatment options are discussed and the indications and limitations of surgical treatment highlighted.
    Sport-Orthopädie - Sport-Traumatologie - Sports Orthopaedics and Traumatology 02/2014;
  • Gernot Willscheid, Martin Engelhardt, Casper Grim
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    ABSTRACT: In a retrospective questionnaire analysis 360 canoeists were asked about their sport-related complaints and injuries within the last four years. Finally 104 elite-canoeing-athletes could be included. The allocation of the injuries and overuse symptoms was carried out by body region. Shoulder problems have been reported with a frequency of 26%. Pain in the lumbar spine and the knee joint was reported in 33% and 27% of the athletes. Dysesthesia in the legs (32%) and wrist-pain (29%) were also reported in about one third of the athletes. The present paper shows that canoeing as obvious upperbody stressing sports can also lead to complaints like dysesthesia of the legs and pain in the lumbar spine, knee and wrist. These complaints occur almost as often as the expected shoulder complaints.
    Sport-Orthopädie - Sport-Traumatologie - Sports Orthopaedics and Traumatology 02/2014;
  • Karsten Keller, Martin Engelhardt
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    ABSTRACT: aging process is associated with changes in muscle mass and strength with decline of muscle strength after the 30(th) life year. The aim of this study was to investigate these changes in muscle mass and strength. for this analysis 26 participants were subdivided in two groups. Group 1 comprises participants aged <40 years (n=14), group 2 those >40 years (n=12). We assessed anthropometrics, range of motions, leg circumferences and isometric strength values of the knee joints. besides comparable anthropometrics, circumferences and strength were higher in group 1 than in group 2. Circumference of upper leg (20 cm above knee articular space) showed for right leg a trend to a significant (median: 54.45 cm (1(st) quartile: 49.35/3(rd) quartile: 57.78) vs 49.80 cm (49.50/50.75), p=0.0526) and for left leg a significant 54.30 cm (49.28/58.13) vs 49.50 cm (48.00/52.53), p=0.0356) larger circumference in group 1. Isometric strength was in 60° knee flexion significantly higher in group 1 than in group 2 for right (729.88N (561.47/862.13) vs 456.92N (304.67/560.12), p=0.00448) and left leg (702.49N (581.36/983.87) vs 528.49N (332.95/648.58), p=0.0234). aging process leads to distinct muscle mass and strength loss. Muscle strength declines from people aged <40 years to those >40 years between 16.6% and 40.9%.
    Muscles, ligaments and tendons journal. 10/2013; 3(4):346-50.
  • Arthroscopy The Journal of Arthroscopic and Related Surgery 06/2013; 29(6):e30–e31. · 3.10 Impact Factor
  • K Keller, M Engelhardt
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    ABSTRACT: Background: Immobilisation and limited mobilisation are associated with negative adaptations of human body, like elevated risk for thrombosis, reduced fitness level and muscle atrophy. The objective of the presented study was to investigate the effect of limited, reduced mobility of a few days on the upper leg muscles.Patients and Methods: 32 patients who underwent an elective arthroscopic surgery of the knee because of meniscus tear and/or cartilage damage were examined preoperatively and at days 4 and 7 after surgery. Examinations of the not injured and not treated leg focused on measurements of leg circumference and maximum strength of M. quadriceps femoris.Results: The measurements of circumferences of the upper leg at 20 cm above the knee joint line decreased significantly between preoperative and both postoperative examinations. Also the changing of circumference of the upper leg at 10 cm above the joint line between preoperative and day 4 postoperative was significant. The circumference of lower leg and strength measurements showed no significant changing.Conclusions: Limited, reduced mobility lasting a few days is followed by reduction of muscle cross section of load bearing upper leg muscles.
    Sportverletzung · Sportschaden 03/2013; · 0.46 Impact Factor
  • J Freiwald, M Engelhardt
    Regulations- und Repairmechanismen, 1994 edited by H. Liesen, M.Weiß, 01/2013: pages 836-839; Dt. Ärzte-Verl.., ISBN: 978-3769103083
  • J. Freiwald, M Engelhardt
    Leistungsdiagnostische und präventive Aspekte der Biomechanik, Edited by D. Schmidtbleicher, A.F. Müller, 01/2013: pages 123-136;
  • Arthritis + Reuma. 08/2012; 32(2):95-103.
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    ABSTRACT: Nach Knietraumen und operativer Versorgung sind die Voraussetzungen zur korrekten Propriozeption gegeben. Der peripher-afferente Schenkel, die spinale und zentrale Reizverarbeitung sowie der peripher-efferente Schenkel sind nach Kniebinnentraumen und -operationen intakt. Veränderte peripher-sensorische Wahrnehmungen (Afferenzen) sind durch das Knietrauma bedingt. Es kommt zu einer Reduktion des absoluten Krafteinsatzes und der aktiven Beweglichkeit, zu einer Veränderung der Muskelselektion sowie zu Verlängerungen neuromuskulärer Reaktionszeiten. Postoperative Übungen müssen es dem Patienten ermöglichen, alltagsnahe positive sensorische Erfahrungen zu sammeln. Despite some alterations of receptor thresholds after knee trauma and surgical treatment joint receptors provide the prerequisites for correct proprioception. The peripheral afferent pathway, the spinal and central stimulus processing and the peripheral efferent pathway are intact. Alterated peripheral sensory perception is caused by the knee trauma induced change of proprioception. A reduction of absolute torque, active range of movement, modified muscle selection and delay in neuromuscular latency time are observed. Postoperative exercise should enable the patient to gather positive sensory experience enclose to activities of daily living.
    Arthroskopie 04/2012; 13(6):302-306.
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    ABSTRACT: Mild cognitive impairment, especially executive dysfunction might occur early in the course of Parkinson's disease. Cognitive training is thought to improve cognitive performance. However, transfer of improvements achieved in paper and pencil tests into daily life has been difficult. The aim of the current study was to investigate whether a multimodal cognitive rehabilitation programme including physical exercises might be more successful than cognitive training programmes without motor training. 240 PD-patients were included in the study and randomly allocated to three treatment arms, group A cognitive training, group B cognitive training and transfer training and group C cognitive training, transfer training and psychomotor and endurance training. The primary outcome measure was the ADAS-Cog. The secondary outcome measure was the SCOPA-Cog. Training was conducted for 4 weeks on a rehabilitation unit, followed by 6 months training at home. Caregivers received an education programme. The combination of cognitive training using paper and pencil and the computer, transfer training and physical training seems to have the greatest effect on cognitive function. Thus, patients of group C showed the greatest improvement on the ADAS-Cog and SCOPA-COG and were more likely to continue with the training programme after the study.
    Journal of aging research 01/2012; 2012:235765.
  • Source
    I. Reuter, S. Mehnert, M. Oechsner, M. Engelhardt
    Diagnostics and Rehabilitation of Parkinson's Disease, 12/2011; , ISBN: 978-953-307-791-8
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    ABSTRACT: To establish the clinical relevance of proprioceptive deficits reported after anterior cruciate ligament (ACL) injury. A literature search was done in electronic databases from January 1990 to June 2009. Inclusion criteria for studies were ACL deficient (ACL-D) and ACL reconstruction (ACL-R) articles written in English, Dutch or German and calculation of correlation(s) between proprioception tests and clinical outcome measures. Clinical outcome measures were muscle strength, laxity, hop test, balance, patient-reported outcome, objective knee score rating, patient satisfaction or return to sports. Studies included in the review were assessed on their methodological quality. In total 1161 studies were identified of which 24 met the inclusion criteria. Pooling of all data was not possible due to substantial differences in measurement techniques and data analysis. Most studies failed to perform reliability measurements of the test device used. In general, the correlation between proprioception and laxity, balance, hop tests and patient outcome was low. Four studies reported a moderate correlation between proprioception, strength, balance or hop test. There is limited evidence that proprioceptive deficits as detected by commonly used tests adversely affect function in ACL-D and ACL-R patients. Development of new tests to determine the relevant role of the sensorimotor system is needed. These tests should ideally be used as screening tests for primary and secondary prevention of ACL injury.
    British journal of sports medicine 04/2011; 46(3):180-92. · 3.67 Impact Factor
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    ABSTRACT: Symptoms of Parkinson's disease (PD) progress despite optimized medical treatment. The present study investigated the effects of a flexibility and relaxation programme, walking, and Nordic walking (NW) on walking speed, stride length, stride length variability, Parkinson-specific disability (UPDRS), and health-related quality of life (PDQ 39). 90 PD patients were randomly allocated to the 3 treatment groups. Patients participated in a 6-month study with 3 exercise sessions per week, each lasting 70 min. Assessment after completion of the training showed that pain was reduced in all groups, and balance and health-related quality of life were improved. Furthermore, walking, and Nordic walking improved stride length, gait variability, maximal walking speed, exercise capacity at submaximal level, and PD disease-specific disability on the UPDRS in addition. Nordic walking was superior to the flexibility and relaxation programme and walking in improving postural stability, stride length, gait pattern and gait variability. No significant injuries occurred during the training. All patients of the Nordic walking group continued Nordic walking after completing the study.
    Journal of aging research 01/2011; 2011:232473.
  • M Kieb, O Lorbach, M Engelhardt
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    ABSTRACT: Muscle injuries are common in sports. They are usually caused by either acute (mostly eccentric mechanisms) or chronic overloading with a lack of muscle coordination. They present in clinical practice as bruises and muscle sprains. Due to the rigours of a modern society and the high economic cost of time off work, an effective treatment needs to be employed. The key to an optimised therapy rests in the appropriate timing between immobilisation and mobilisation. The interval to muscle repair might be shortened by certain adjuvant therapies. In doing so, it is important that no physiological phases of wound healing are overlooked. Muscle healing can be accelerated by externally induced higher metabolic turnover. Surgical therapy is sometimes necessary in selected cases and in serious injuries.
    Der Orthopäde 12/2010; 39(12):1098-107. · 0.51 Impact Factor
  • C Grim, O Lorbach, M Engelhardt
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    ABSTRACT: Ruptures of the quadriceps or patellar tendon are uncommon but extremely relevant injuries. Early diagnosis and surgical treatment with a stable suture construction are mandatory for a good postoperative clinical outcome. The standard methods of repair for quadriceps and patellar tendon injuries include the placement of suture loops through transpatellar tunnels. Reinforcement with either a wire cerclage or a PDS cord is used in patellar tendon repair. The PDS cord can also be applied as augmentation in quadriceps tendon repair. In secondary patellar tendon repair an autologous semitendinosus graft can be used. For chronic quadriceps tendon defects a V-shaped tendon flap with a distal footing is recommended. The different methods of repair should lead to early functional postoperative treatment. The clinical outcome after surgical treatment of patellar and quadriceps tendon ruptures is mainly good.
    Der Orthopäde 12/2010; 39(12):1127-34. · 0.51 Impact Factor
  • M Engelhardt, O Lorbach
    Der Orthopäde 12/2010; 39(12):1097. · 0.51 Impact Factor
  • C. Grim, O. Lorbach, M. Engelhardt
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    ABSTRACT: Rupturen der Quadrizeps- und Patellasehne sind seltene, aber äußerst relevante Kniegelenkverletzungen. Die frühzeitige Diagnose und die operative Therapie mit einer zuverlässigen Nahtkonstruktion bilden die Grundvoraussetzung für ein günstiges postoperatives und funktionelles Ergebnis. Die Versorgung der Patellasehnen- und der Quadrizepssehnenruptur erfolgt in aller Regel mit einer transossären Refixation der Sehne an die Kniescheibe. Für die Patellasehne wird eine Augmentation mit einer Rahmencerclage empfohlen. Wahlweise kommt hierbei eine PDS-Kordel zum Einsatz, die ebenfalls als Rahmenkonstruktion für die Versorgung der Quadrizepssehne verwendet werden kann. Für die sekundäre Versorgung von Defektsituationen an der Patellasehne wird eine Augmentation mit autologer Semitendinosussehne und für die Quadrizepssehne eine Defektüberbrückung über einen nach distal gestielten V-förmigen Sehnenlappen empfohlen. Ziel jeglicher Versorgung sollte das Erreichen einer Übungsstabilität sein, sodass eine frühfunktionelle Nachbehandlung erfolgen kann. Die klinischen Ergebnisse nach operativer Versorgung von Patellasehnen- und Quadrizepssehnenrupturen sind meist gut. Ruptures of the quadriceps or patellar tendon are uncommon but extremely relevant injuries. Early diagnosis and surgical treatment with a stable suture construction are mandatory for a good postoperative clinical outcome. The standard methods of repair for quadriceps and patellar tendon injuries include the placement of suture loops through transpatellar tunnels. Reinforcement with either a wire cerclage or a PDS cord is used in patellar tendon repair. The PDS cord can also be applied as augmentation in quadriceps tendon repair. In secondary patellar tendon repair an autologous semitendinosus graft can be used. For chronic quadriceps tendon defects a V-shaped tendon flap with a distal footing is recommended. The different methods of repair should lead to early functional postoperative treatment. The clinical outcome after surgical treatment of patellar and quadriceps tendon ruptures is mainly good. SchlüsselwörterKniegelenk-Quadrizepssehne-Patellasehne-Sehnennaht-Sehnenverletzung KeywordsKnee-Quadriceps tendon-Patellar tendon-Tendon suture-Tendon injury
    Der Orthopäde 12/2010; 39(12):1127-1134. · 0.51 Impact Factor

Publication Stats

298 Citations
55.83 Total Impact Points

Institutions

  • 2009–2012
    • Justus-Liebig-Universität Gießen
      Gieben, Hesse, Germany
  • 1997–2012
    • Orthopädische Universitätsklinik Friedrichsheim
      Frankfurt, Hesse, Germany
    • Klinikum Uelzen GmbH
      Uelzen, Lower Saxony, Germany
    • Klinikum Stuttgart
      Stuttgart, Baden-Württemberg, Germany
  • 2010
    • Klinikum Osnabrück GmbH
      Osnabrück, Lower Saxony, Germany
  • 2005
    • University of Wuerzburg
      Würzburg, Bavaria, Germany
  • 2002
    • King's College London
      • Department of Clinical Neuroscience
      Londinium, England, United Kingdom
  • 1999–2002
    • Klinikum Nürnberg
      Nuremberg, Bavaria, Germany
  • 1970–2000
    • Goethe-Universität Frankfurt am Main
      Frankfurt, Hesse, Germany