LegTutor Restores Stability Following Knee Replacement Surgery

Writing in ORTHOPEDICS September 2011 in an article entitled:Instability in Primary Total Knee Arthroplasty
Drs. Daniel J. Del Gaizo, MD and Craig J. Della Valle, MD from Rush University Medical Center, Chicago, Illinois.have found that instability is one of the most common causes of failure of total knee arthroplasty (TKA). The presentation can vary from pain to frank dislocation with the etiologies just as varied. Instability after TKA can be classified by where the instability occurs in the knee’s arc of motion as well as the chronicity of the problem. Acute instability is related to intraoperative injuries or excessive release of important coronal stabilizers such as the medial collateral ligament in extension or the posterolateral corner in flexion. Chronic instability in extension is often related to varus/valgus malalignment. Chronic instability in flexion can be related to an undersized femoral component, excessive tibial slope, or excessive elevation of the joint line affecting the isometry of the collateral ligaments in midflexion. Recurvatum instability is a rare complication that often coincides with extensor mechanism dysfunction or neuromuscular disorders. When addressing instability after TKA, it is critical to determine the root cause of the problem as well as evaluate for other causes of pain such as infection or aseptic loosening. When revision surgery is warranted, it should follow the basic principles of restoring a neutral mechanical alignment, setting the appropriate component rotation, balancing the flexion and extension spaces, and restoring the height of the native joint line.
The LegTutor™ system has been developed to allow for functional rehabilitation of the lower extremity. It is extremely helpful following knee surgery. The system consists of an ergonomic wearable leg brace and dedicated rehabilitation software. The LegTutor™ system allows for a range of biomechanical evaluation including speed, passive and active range of motion and motion analysis of the lower extremity. Quantitative biomechanical data allow for objective evaluation and rehabilitation treatment follow up. The LegTutor™ rehabilitation concept is based on performing controlled exercise rehabilitation practice at a patient customized level with real time accurate feedback on the patient’s performance. The exercises are designed in the form of challenging games that are suitable for a wide variety of neurological and orthopedic injury and disease.
The games challenge the patient to perform the exercise task to their best ability and to continue exercise practice.
The LegTutor™ allows for isolated and a combination of knee and three directional hip treatment. The system provides detailed exercise performance instructions and precise feedback on the patients exercise performance. Controlled exercise of multi joints within the normal movement pattern prevents the development of undesired and compensatory joint movement and ensures better performance of functional tasks.
The LegTutor™ system is used by many leading rehabilitation centers worldwide and has full FDA and CE certification. .