Abstract. Generating precise and up-to-date landslide susceptibility maps (LSMs) in landslide-prone areas is important to identify hazard potential in the future. The data quality and the method selection affect the accuracy of the LSMs. In this context, the accuracy and precision of the digital elevation models (DEMs) used as input are among the most important performance elements. Therefore, the influence of DEM accuracy and spatial resolution in producing LSMs was investigated here. A high accuracy DEM with 5 m grid spacing produced from aerial photographs and the EU-DEM v1.1 freely accessible from Copernicus Land Monitoring Service with 25 m spatial resolution were used for producing two different LSMs using the Random Forest (RF) method in this study. The RF method has proven success for this purpose. A total of eight conditioning factors, which include topographical and geological features, was used as model input. The landslide inventory was derived with the help of aerial stereo images with 20 cm and 30 cm ground sampling distances. The performances of the LSMs were assessed with receiver operating characteristics (ROC) area under curve (AUC) values. In addition, the results were compared with visual inspection. The results show that although the AUC values obtained from the aerial DEM (0.95) and EU-DEM v1.1 (0.93) were comparable; based on the visual assessments, the LSM obtained from the higher resolution DEM was found more successful in detecting the landslides and thus exhibited better prediction performance.

Adaptation to prosthesis is important for occupation, quality of life, and participation in social life, so it needs to be evaluated. The aim of this study was to determine the validity and reliability of the Forgotten Joint Score–12 (FJS-12) in lower limb amputees. The FJS-12 was applied to 80 amputees. Criterion-referenced validity was assessed using the activity restriction subparameter of Trinity Amputation and Prosthesis Experience Scale (TAPES). The internal consistency of the FJS-12 was high (Cronbach’s α = .943). A statistically significant very good negative correlation was determined between the FJS-12 and the activity restriction subparameter of TAPES ( r = −.641; p < .001). The results of this study showed that FJS-12 is a valid and reliable measurement tool that can be used to assess the adaptation to prosthesis in amputees. Evaluation of prosthesis awareness in daily living activities of amputees is important in terms of establishing occupational therapy and rehabilitation programs.

BackgroundIn knee disarticulation, transfemoral and hip disarticulation amputations, unlike transtibial amputations, the anatomical knee joint is replaced by a prosthetic knee joint. In amputations where the natural knee joint is not preserved, compared to transtibial amputations; It has been stated that it is difficult to reach the normal functional level and more energy is spent [1]. The closer the amputation level is to the proximal, the more restrictions the amputee has in activities of daily living [2].ObjectivesIn this study, we compared the ability of forgetting the prosthesis, which is an indicator of adaptation with the prosthesis, of amputees with and without an anatomical knee joint in daily life activities. The aim of this study is to examine the effect of loss of the knee joint on the ability to forget the prosthesis in daily life in amputees.MethodsLower limb amputees aged 18-65 years, who used prosthesis for at least 6 months were included in this study. Prosthesis awareness was evaluated with the Forgotten Joint Score-12 (FJS-12) amputee version [3]. The FJS-12 amputee version consists of 12 questions about awareness of the artificial limb during daily living activities. The raw scores are transformed to range from 0 to 100 points, with high scores indicating as a percentage (%) the extent to which the patient can forget the artificial limb, that is, adapt them to their lives. Amputees were divided into two groups as with and without knee joint loss. The prosthetic awareness scores of the two groups were compared. Independent sample t-test was used to compare the data.Results29 transtibial amputees (mean age: 37.17 ± 11.05 years; Body Mass Index: 25.21 ± 3.02 kg/m2) were included in the knee joint group. A total of 26 amputees (mean age: 35.07 ± 10.29 years; Body Mass Index: 23.77 ± 3.59 kg/m2) were included in the group without knee joint, including 5 knee disarticulations, 18 transfemoral and 3 hip disarticulations. The groups were similar in terms of mean age, body mass index, and years of prosthesis use (respectively p=0.470;p= 0.143; p=0.980) When the FJS-12 total score means of the groups with and without knee joint were compared, there was a statistically significant difference between the two groups (p=0.017; Z=-2.337).ConclusionThis study showed that loss of the knee joint affects the way amputees perceive their prosthesis. In the absence of a anatomical knee joint, amputees’ attention to their prosthesis is increasing. Amputees with a knee joints focus less on their prostheses in daily life activities. Our study revealed that the knee joint, which is frequently used in activities of daily living, is also a determining factor in the adaptation of amputees to the prosthesis.References[1] Davis AJ, Kelly BM, Spires MC. Prosthetic restoration and rehabilitation of the upper and lower extremity: Demos Medical Publishing; 2013.[2] Kowal M, Starczewska A, Rutkowska-Kucharska A. Biomechanical Parameters of Gait after Unilateral Above-knee Amputation. Current State of Research. Ortopedia, traumatologia, rehabilitacja. 2018;20(4):245-56.[3] Karakaş G, Özçadirci A, Topuz S. A Modified Version of the Forgotten Joint Score–12 in Lower Limb Amputees: Validity and Reliability Study. OTJR: Occupation, Participation and Health. 2022: DOI: 10.1177/15394492221123521Acknowledgements:NIL.Disclosure of InterestsNone Declared.