Shantanu Patil | SRM UNIVERSITY (original) (raw)

Papers by Shantanu Patil

Research Square (Research Square), Aug 10, 2023

Journal of Arthroscopic Surgery and Sports Medicine, Jan 10, 2021

Objectives: Osteochondral autograft transplantation (OAT) for the management of cartilage defect ... more Objectives: Osteochondral autograft transplantation (OAT) for the management of cartilage defect involves direct transfer of hyaline cartilage to the defect site. The study aims to assess mid-term functional outcomes of arthroscopic treatment of focal chondral defects of the knee using the OAT technique. Materials and Methods: In this prospective follow-up study, patients who had previously undergone an OAT procedure for chondral defects of the knee at least 2 years prior were included. All the cartilage defects were treated arthroscopically with one or two plugs. Patients were followed up at 2 time points – in June 2016 and June, 2020. The International Knee Documentation Committee (IKDC) score and Tegner activity scale (TAS) were recorded preoperatively and at both follow-ups. Results: There were 20 patients with 21 focal cartilage defects, comprising 14 males and 6 females, with an average age of 30.9 ± 7 years and mean body mass index (BMI) of 27.2 ± 4 kg/m2. The first follow-up was after a mean 42.4 ± 12 months and the second after mean 90.4 ± 11.9 months post-surgery. The IKDC score improved significantly at both follow-ups compared to pre-operative scores (P < 0.001). At the first follow-up, the mean change in IKDC score was 25.3 ± 16.7 with 14 patients (70%) achieving minimal clinically important difference (MCID) but only 5 (25%) achieving substantial clinical benefit (SCB). At the second follow-up, 16 patients (80%) achieved MCID and 8 (40%) achieved SCB in IKDC score, with a mean change of 28.3 ± 12.6. The TAS showed statistically significant improvement at the first follow-up (P = 0.011), but not at the second follow-up (P = 0.052). Conclusion: OAT for focal cartilage defects of the knee is an excellent option as it provides clinically significant and incremental improvement in functional results in the mid-term. The results are not inferior even when a concomitant ligament or meniscus surgery is performed. Higher age or BMI does not have a negative impact on the outcomes.

Nucleation and Atmospheric Aerosols, 2023

Orthopaedic Proceedings, Nov 1, 2011

Total knee arthroplasty (TKA) provides relatively pain-free function for patients with end-stage ... more Total knee arthroplasty (TKA) provides relatively pain-free function for patients with end-stage arthritis. However, return to recreational and athletic activities is often restricted based on the potential for long-term wear and damage to the prosthetic components. Advice regarding safe and unsafe activities is typically based on the individual surgeon’s subjective bias. We measured knee forces in vivo during downhill skiing to develop a more scientific rationale for advice on post-TKA activities A TKA patient with the tibial tray instrumented to measure tibial forces was studied at two years postoperatively. Tibial forces were measured for the various phases of downhill skiing on slopes ranging in difficulty from green to black. Walking on skis to get to the ski lift generated peak forces of 2.1 ± 0.20 xBW (times body weight), cruising on gentle slopes 1.5 ± 0.22 xBW, skating on a flat slope 3.9 ± 0.50 xBW, snowplowing 1.7 ± 0.20 xBW, and coming to a stop 3 ± 0.12 xBW. Carving on steeper slopes generated substantially higher forces: blue slopes (range 6° to 10°), 4.4 ± 0.18 xBW; black slopes (range 15° to 20°), 4.9 ± 0.57 xBW. These forces were compared to peak forces generated by the same patient during level walking: 2.6 ± 0.4 xBW, stationary biking 1.3 ± 0.7 xBW, stair climbing 3.1 ± 0.31 xBW, and jogging 4.3 ± 0.8 xBW. The forces generated on the knee during recreational skiing vary with activity and level of difficulty. Snow-plowing and cruising on gentle slopes generated lower forces than level walking (comparable to stationary biking). Stopping and skating generated forces comparable to stair climbing. Carving on steeper slopes (blues and blacks) generated forces as high as those seen during jogging. This study provides quantitative results to assist the surgeon in advising the patient regarding postoperative exercise.

Journal of The Anatomical Society of India, 2022

Jaypee Brothers Medical Publishers (P) Ltd. eBooks, 2016

Journal of orthopaedic surgery, Aug 28, 2017

Arthroscopy techniques, Dec 1, 2019

Clinical Orthopaedics and Related Research, Oct 1, 2007

ABSTRACT

IOP conference series, Sep 12, 2020

Scoliosis is the deformity of the growing human spinal column such that the vertebral alignment i... more Scoliosis is the deformity of the growing human spinal column such that the vertebral alignment is distorted in a corkscrew fashion. A person with severely deformed spine may find it difficult to breathe as the ribcage may press against the internal organs compromising the functions of the lungs and the heart. Due to the altered load transfer, these patients also suffer from back pain and early arthritis. The scoliotic deformity is surgically corrected by using implants which are screwed into the vertebra. In severe cases, complete correction may not be achievable. As a result, the loads experienced by the implants may not be optimal, leading to their early failure. The objective of this work is to study the effect on the deformity correction in a scoliotic spine. A three-dimensional model of the surgically corrected spine was segmented from the computed tomography scan and converted into a surface model. This model was imported in to ANSYS for meshing and subjected to compression load to simulate weight bearing. The stress concentration and displacement across the entire spine, individual vertebrae and discs was analysed. The effect on the implants was separately analysed as well.

Indian Journal of Orthopaedics, Mar 12, 2021

ObjectivesThe objectives were: (1) to analyze the MRI healing rates of bucket-handle meniscus rep... more ObjectivesThe objectives were: (1) to analyze the MRI healing rates of bucket-handle meniscus repair; (2) to compare the accuracy of assessment of meniscus healing for conventional MRI and Indirect Magnetic Resonance Arthrography (IMRA); and (3) to identify patients who may require second-look arthroscopy after meniscus repair.MethodsThis is a prospective observational case series of thirty-seven patients with repaired bucket-handle medial meniscus tear with a minimum one year follow-up. Meniscus healing rates were assessed on direct MRI and IMRA using Henning’s criteria. At the same time, patients’ symptoms were evaluated according to Barrett’s criteria and functional outcomes were recorded using International Knee Documentation Committee (IKDC) score, Knee Osteoarthritis and Outcomes Score (KOOS) and Tegner–Lysholm scores. A further clinical review was performed 18 months after the imaging to assess the evolution of symptoms.ResultsAt a mean of 22.3 ± 7.8 months after the meniscus repair, 56.7% patients showed complete healing and 40.5% patients demonstrated incomplete repair healing on IMRA. 52% patients with complete healing and 40% patients with incomplete healing demonstrated meniscus symptoms. At the second clinical review, 19% patients with complete healing and 20% patients with incomplete healing had meniscus symptoms. There was no co-relation between symptoms, PROMs and healing on MRI.ConclusionIndirect MR arthrography offers distinct advantages over direct MRI for assessment of meniscus healing, especially in symptomatic patients. Patient-reported outcome measures and symptomatology are not co-related with the healing status of the meniscus and they resolve in the majority on longer follow-up. A more conservative approach guided by IMRA to assess meniscus healing will avoid early re-operations.

Knee Surgery, Sports Traumatology, Arthroscopy, Feb 22, 2021

Journal of Arthroplasty, Jul 1, 2018

Journal of Real-Time Image Processing

Journal of Drug Delivery Science and Technology

Indian Journal of Orthopaedics, 2020

International Journal of Research in Pharmaceutical Sciences, 2020

Detailed morphometric analysis is required for various surgical approaches in the craniovertebral... more Detailed morphometric analysis is required for various surgical approaches in the craniovertebraljunction. High mortality and morbidity are anticipated for the surgical procedures when undertaken without in-depth anatomical knowledge. With so much clinical importance in this area, our study will present a thorough understanding in terms of skull and CT values.The main aim of this study is to give the morphometric details of occipital condyles and foramenmagnum in cadaveric skulls andCT scans.Seventy dried human skulls and 70 CT images on the three-dimensional volume-rendered reconstruction of the skull base was used for this study.The length and width of the occipital condyle of right and the left side was 22.21 ±5.20 mm; 22.05±4.83 mm; 12.57 ± 2.50 and 12.68 ± 2.92mm respectively in cadaver skull. The length and width of occipital condyles in CT scans for right and left side was 21.61± 3.09 mm; 21.58± 3.50 mm; 13.04± 1.58 mm and 13.13± 2.54 mm respectively. The Anteroposterior and ...