 |
 |
Dear Sinisa Poznic: One of my areas of research is on knee instability, and much of my clinical practice relates to knee injuries. I would recommend, if you are considering a research or clinical study, to focus on a specific diagnostic group that is reasonably well defined. A subjective sense of knee instability can arise from meniscal, ligamentous, or articular injury. In addition, some people have hyperextension or flexion "giving way" with or without any apparent intrinsic pathology. The literature I am aware of indicates that muscular activation can control (but not eliminate) translation in an anterior-posterior direction, and flexion-extension rotation. See MacWilliams BA. Wilson DR. DesJardins JD. Romero J. Chao EY. Hamstrings cocontraction reduces internal rotation, anterior translation, and anterior cruciate ligament load in weight-bearing flexion. Journal of Orthopaedic Research. 17(6):817-22, 1999 Liu W, Maitland ME. The effect of hamstring muscle forces on instability of the ACL-deficient knee during gait. Journal of Biomechanics 2000;33:871-879. The literature appears to show that rotation in a valgus varus plane is less well controlled by muscular activation. I would enjoy hearing more about your study. Yours sincerely, Murray On Sat, 6 Jan 2001, Sinisa Poznic wrote: > Dear members of [log in to unmask] > > I am working on a study of knee stabilization program. So, if you know some interesting things about that issue, please contact me. I am trying to collect references about knee stabilization, also. So, if anybody has some good references about that, please contact me. > I finished basic (1+2) PNF course last year and I found it very effective for knee stabilization. > > Sinisa Poznic > Public Hospital "St. Ghost" 64 > Clinic for physical therapy and reumatology > (Physical therapy for knee and ankle joint) > Zagreb, Croatia > > > > > ________________________________________________________________ Murray Maitland PhD PT Associate Professor and Physical Therapist Faculty of Kinesiology Sport Medicine Centre University of Calgary 2500 University Drive NW Calgary, Alberta T2N 1N4 (403) 220-8943 office (403) 220-8232 clinic (403) 282-6170 fax [log in to unmask]