Carlo Camathias1,2,3, Elias Ammann4,5, Rahel L Meier4, Erich Rutz6,4, Patrick Vavken7,8, Kathrin Studer9. 1. Praxis Zeppelin, Brauerstrasse 95, 9016, St. Gallen, Switzerland. camathias.carlo@gmail.com. 2. Department of Orthopedic Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA. camathias.carlo@gmail.com. 3. Basel Medical School, University of Basel, Petersplatz 1, 4003, Basel, Switzerland. camathias.carlo@gmail.com. 4. Basel Medical School, University of Basel, Petersplatz 1, 4003, Basel, Switzerland. 5. Kantonsspital Baden, Im Ergel 1, 5404, Baden, Switzerland. 6. Paediatric Orthopaedic Department, University Children's Hospital Basle (UKBB), Spitalstrasse 33, 4056, Basel, Switzerland. 7. Department of Orthopedic Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA. 8. ADUS Klinik, Breitestrasse 11, 8157, Dielsdorf, Switzerland. 9. Praxis Zeppelin, Brauerstrasse 95, 9016, St. Gallen, Switzerland.
Abstract
PURPOSE: To evaluate the kinematics/kinetics of the ankle, knee, hip in the sagittal plane in adolescents with recurrent patellar dislocation in comparison to a healthy control. METHODS: Case-control study. Eighty-eight knees (67 patients) with recurrent patellar dislocation (mean age 14.8 years ± 2.8 SD) were compared to 54 healthy knees (27 individuals, 14.9 years ± 2.4 SD). Kinematics/kinetics of ankle, knee, hip, and pelvis were captured using 3D-gait analysis (VICON, 12 cameras, 200 Hz, Plug-in-Gait, two force plates). One cycle (100%) consisted of 51 data-points. The mean of six trials was computed. RESULTS: The loading-response increased by 0.02 s ± 0.01SE (10.8%) with dislocations (0.98% of total gait, P < 0.01). The mid-stance-phase decreased equally (P < 0.01). Dislocation decreased knee flexion during the entire gait cycle (P < 0.01), with the largest difference during mid-stance (9.0° ± 7.2 SD vs. 18.5° ± 6.7 SD). Dislocation increased plantar-flexion during loading response 4.1° ± 0.4 SE with (P < 0.01), afterward, the dorsal-extension decreased 3.2° ± 0.3 SE, (P < 0.01). Dislocation decreased hip flexion during all phases (P < 0.01). Maximal difference: 7.5° ± 0.5 SE during mid-stance. 80% of all patients developed this gait pattern. Internal moments of the ankle increased, of the knee and hip decreased during the first part of stance. CONCLUSION: Recurrent patellar dislocation decreases knee flexion during the loading-response and mid-stance phase. A decreased hip flexion and increased plantar-flexion, while adjusting internal moments, indicate a compensation mechanism. LEVEL OF EVIDENCE: III.
PURPOSE: To evaluate the kinematics/kinetics of the ankle, knee, hip in the sagittal plane in adolescents with recurrent patellar dislocation in comparison to a healthy control. METHODS: Case-control study. Eighty-eight knees (67 patients) with recurrent patellar dislocation (mean age 14.8 years ± 2.8 SD) were compared to 54 healthy knees (27 individuals, 14.9 years ± 2.4 SD). Kinematics/kinetics of ankle, knee, hip, and pelvis were captured using 3D-gait analysis (VICON, 12 cameras, 200 Hz, Plug-in-Gait, two force plates). One cycle (100%) consisted of 51 data-points. The mean of six trials was computed. RESULTS: The loading-response increased by 0.02 s ± 0.01SE (10.8%) with dislocations (0.98% of total gait, P < 0.01). The mid-stance-phase decreased equally (P < 0.01). Dislocation decreased knee flexion during the entire gait cycle (P < 0.01), with the largest difference during mid-stance (9.0° ± 7.2 SD vs. 18.5° ± 6.7 SD). Dislocation increased plantar-flexion during loading response 4.1° ± 0.4 SE with (P < 0.01), afterward, the dorsal-extension decreased 3.2° ± 0.3 SE, (P < 0.01). Dislocation decreased hip flexion during all phases (P < 0.01). Maximal difference: 7.5° ± 0.5 SE during mid-stance. 80% of all patients developed this gait pattern. Internal moments of the ankle increased, of the knee and hip decreased during the first part of stance. CONCLUSION: Recurrent patellar dislocation decreases knee flexion during the loading-response and mid-stance phase. A decreased hip flexion and increased plantar-flexion, while adjusting internal moments, indicate a compensation mechanism. LEVEL OF EVIDENCE: III.
Authors: Ingo J Banke; Ludwig M Kohn; Gebhart Meidinger; Alexander Otto; Daniel Hensler; Knut Beitzel; Andreas B Imhoff; Philip B Schöttle Journal: Knee Surg Sports Traumatol Arthrosc Date: 2013-07-14 Impact factor: 4.342
Authors: Tyson C Christensen; Thomas L Sanders; Ayoosh Pareek; Rohith Mohan; Diane L Dahm; Aaron J Krych Journal: Am J Sports Med Date: 2017-05-02 Impact factor: 6.202
Authors: Carlo Camathias; Bernhard Maria Speth; Erich Rutz; Thomas Schlemmer; Kata Papp; Patrick Vavken; Kathrin Studer Journal: JBJS Essent Surg Tech Date: 2018-04-11
Authors: Andreas Habersack; Tanja Kraus; Annika Kruse; Katharina Regvar; Michael Maier; Martin Svehlik Journal: Int J Environ Res Public Health Date: 2022-08-23 Impact factor: 4.614