Browsing by Publisher "Ekin Medical Publishing"

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    Proprioception of the knee joint in patellofemoral pain syndrome; [Patellofemoral aǧrı sendromunda diz ekleminin propriyosepsiyonu]
    (Ekin Medical Publishing, 2008) Akseki D.; Akkaya G.; Erduran M.; Pinar H.
    Objectives: The importance of proprioception in the etiology, treatment, and prevention of sports injuries and joint diseases has become increasingly clear. The purpose of this study was to investigate knee proprioception in patients with patellofemoral pain syndrome (PFPS). Methods: The study included 28 patients (18 females, 10 males; mean age 28 years; range 16 to 48 years) with a clinical diagnosis of unilateral PFPS and 27 normal volunteers (13 females, 14 males; mean age 26 years; range 19 to 32 years) without any complaint related to the knee. The mean duration of complaints was 35.8 weeks (range 2 weeks to 3 years). In both patient and control groups, proprioception of the knee was measured by means of active joint position sense at four different target angles (15°, 30°, 45°, 60°) with the use of a digital goniometer and the results were compared. Results: Proprioceptive errors were greater at all target angles in the affected knees compared to those measured in the contralateral knees and both knees of the controls. Differences between affected knees and contralateral knees ranged from 1.01(0.25° to 1.65(0.43° and were significant at three target angles (15°, 30°, 60°; p(0.05). Comparisons between the affected knees and both knees of the controls also showed significant differences at all target angles ranging from 2.48(0.92° to 3.87(2.46° (p(0.001). Errors obtained in the normal knees of the patients were also significantly greater compared to those seen in both knees of the controls, exceeding 2.7° at some target angles (p<0.001). Conclusion: Our results show that patients with PFPS have impaired proprioception in the affected knee accompanied by significant losses in the proprioception of the contralateral normal knee. Based on these findings, proprioceptive rehabilitation techniques should be incorporated into the treatment of PFPS. (2008 Turkish Association of Orthopaedics and Traumatology.
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    Influence of number and orientation of screws on stability in the internal fixation of unstable femoral neck fractures
    (Ekin Medical Publishing, 2014) Gümüştaş S.A.; Tosun H.B.; Ağir I.; Orak M.M.; Onay T.; Okçu G.
    Objective: The aim of this study was to biomechanically compare 3 different cannulated screw configurations used in internal fixation of unstable femoral neck fractures. Methods: The study included 28 synthetic left femurs randomly divided into 4 equal groups. Samples in the first 3 groups were osteotomized in the basicervical region to create Pauwels Type 3 fractures. Fixation was carried out using cannulated screws. In Group 1, four screws were used including 3 in an inverted triangle configuration in parallel with the neck and the fourth screw transversely into the calcar. In Group 2, three screws were used including 2 in parallel with the neck and the third transversely into the calcar. In Group 3, three screws were used in an inverted triangle configuration in parallel with the neck. No osteotomy or fixation was carried out in Group 4. Load test was performed on all the groups and the strength of the screw fixations against axial load and their amount of relocation were measured. Results: Average maximum strength was 36.1±2 in Group 1, 27.3±4.1 N/mm2 in Group 2 and 21.9±3.2 N/mm2 in Group 3. The average relocation in the line of osteotomy in the moment of average maximum stress (21.9±3.2 N/mm2) was 11.5±2.1 mm in Group 3, 6±1.3 mm in Group 2 and 5.8±1.1 mm in Group 1 (p<0.05). It was also observed that while the relocation in the moment of average maximum stress (27.3±4.1 N/mm2) was 9.1±1.7 mm in Group 2, the deformation under the same stress value was 9±1.7 mm in Group 1 (p>0.05). Conclusion: The use of a transverse screw in the calcar in addition to cannulated screws parallel to the neck appear to provide stability benefit in the treatment of unstable femoral neck fractures. © 2014 Turkish Association of Orthopaedics and Traumatology.