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Musculoskeletal system
Published in A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha, Clark’s Procedures in Diagnostic Imaging: A System-Based Approach, 2020
A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha
Intra-articular and peri-articular pain can be caused by myriad of conditions. Some are generic and can affect any joint, such as inflammatory arthritis. Some are specific to the processes within a particular joint or region, for example: Shoulder; pain commonly caused by the process of impingement – injection to the subacromial bursa.Elbow; pain commonly caused by ‘tennis’ or ‘golfer’s’ elbow – injection into the common extensor or flexor origins respectively.Wrist; pain commonly caused by de Quervain’s tenosynovitis – injection into the tendon sheath of the first extensor tendon.Hip; pain commonly caused by trochanteric bursitis – injection into the region of the trochanteric bursa.
Arthroscopic hip preservation surgery
Published in K. Mohan Iyer, Hip Preservation Techniques, 2019
As the etiology is varied, there are many therapeutic options for trochanteric bursitis. The management relies principally on physiotherapy and stretching. In cases that are refractory to conservative treatment, surgical interventions by means of arthroscopic debridement and release of tight iliotibial band have been shown to be safe and efficient.
Musculoskeletal imaging and therapeutic options in soft tissue disorders
Published in David Silver, Silver's Joint and Soft Tissue Injection, 2018
Extracorporeal shockwave therapy (ESWT), previously known as extracorporeal shockwave lithotripsy (ESWL), has been available for some time and is a well-established and effective method for treating renal calculi. It also has an established role in treating bony and soft tissue disorders, with clinical improvement of symptoms in the following areas: Bony non-union.Calcific tendinosis.Tennis and golfer’s elbow.Trochanteric bursitis.Patella tendinosis.Achilles tendinosis.Plantar fasciitis.Peyronie’s disease of the penis.
Computational prediction of the long-term behavior of the femoral density after THR using the Silent Hip stem
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2023
Zainab Al-Hajaj, Pouria Tavakkoli Avval, Habiba Bougherara
Contacts between all surfaces were constructed based on the perfect bonding (i.e. the nodes of the inner surface are merged with the nodes of external surfaces). The contact was modelled using CONTA174 and TARGE170 contact pair element to represent contact and sliding between adjacent surfaces. The cancellous and cortical bones and implant were meshed by Quadratic Tetrahedrons elements (∼SOLID187). The muscle and hip joint reaction forces were applied on the femoral head and greater and lesser trochanters of the model (Figure 2), to simulate the physiological loading. The forces values were identified according to the previous studies reported in literatures (Brand et al. 1994; Duda et al. 1998). To avoid stress concentration, the muscles and hip joint reaction forces were applied on the surface and distributed over several nodes on the greater and lesser trochanter and the femoral head (Avval et al. 2016). The degrees of freedom of nodes (i.e. SOLID187 element has 3 degrees of freedom at each node, translations in the nodal x, y, and z directions) at the distal epiphysis were fixed to create a rigid ground (Figure 3). To avoid stress concentration, the muscles and hip joint reaction forces were distributed over several nodes of greater (and lesser) trochanter and femoral head, respectively (Figure 3).
Is progressive resistance training feasible in patients with symptomatic external snapping hip?
Published in Physiotherapy Theory and Practice, 2022
Troels Kjeldsen, Lisa U. Reimer, Susan M. Drejer, Lars G. Hvid, Inger Mechlenburg, Ulrik Dalgas
The study flowchart is shown in Figure 1. The targeted enrollment number was 12 patients, as has been suggested as a “rule of thumb” for feasibility studies (Julious, 2005). Subjects were identified via participant lists from a previously published study (Reimer, Jacobsen, and Mechlenburg, 2019), using the Diagnosis Related Group classification system (DRG) to identify patients diagnosed with trochanter bursitis. Of 161 respondents, 64 expressed having experienced pain accompanied by snapping of the hip. Invitation letters were sent to 30 of these respondents with information about the study, after controlling for inclusion criteria. Subjects were also identified via out-patient clinics at the Department of Orthopedic surgery at Aarhus University Hospital, Silkeborg Hospital and Horsens Hospital.
Risk of proximal femoral nail antirotation (PFNA) implant failure upon different lateral femoral wall thickness in intertrochanteric fracture: a finite element analysis
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2022
Liqin Zheng, Duo Wai-Chi Wong, Xinmin Chen, Yuanzhuang Chen, Pengfei Li
Stress concentration appeared at the implant interfaces of the PFNA, which was consistent with existing research (Wang et al. 2012). The stress of the PFNA components was consistently higher than that of the femur bone in all lateral femoral wall thickness conditions. As the thickness of the lateral wall decreased, the PFNA stress transferred distally from the spiral blade to the locking screw. When the thickness of the lateral wall gradually decreased until the top of the great trochanter was intact, the bone formed an interlocking structure with the PFNA nail that reduced the tensile stress on the exterior-superior proximal femur, the proximal fragment of the femur, and the spiral blade. The displacement of the proximal fracture and spiral blade also decreased. The "interlock" effect formed by the top of the great trochanteric and the nail was reflected in both the coronal and sagittal planes.