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1.  Navigated pedicle screw placement using computed tomographic data in dorsolumbar fractures 
Indian Journal of Orthopaedics  2014;48(6):555-561.
Background:
Computed tomographic (CT) based navigation is a technique to improve the accuracy of pedicle screw placement. It is believed to enhance accuracy of pedicle screw placement, potentially avoiding complications arising due to pedicle wall breach. This study aims to assess the results of dorsolumbar fractures operated by this technique.
Materials and Methods:
Thirty consecutive skeletally mature patients of fractures of dorsolumbar spine (T9–L5) were subjected to an optoelectronic navigation system. All patients were thoroughly examined for neurological deficit. The criterion for instability were either a tricolumnar injury or presence of neurological deficit or both. Patients with multilevel fractures and distorted spine were excluded from study. Time taken for insertion of each pedicle screw was recorded and placement assessed with a postoperative CT scan using Laine's grading system.
Results:
Only one screw out of a total of 118 screws was misplaced with a Laine's Grade 5 placement, showing a misplacement rate of 0.847%. Average time for matching was 7.8 min (range 5-12 min). Average time taken for insertion of a single screw was 4.19 min (range 2-8 min) and total time for all screws after exposure was 34.23 min (range 24-45 min) for a four screw construct. No neurovascular complications were seen in any of the patients postoperatively and in subsequent followup of 1-year duration.
Conclusion:
CT-based navigation is effective in improving accuracy of pedicle screw placement in traumatic injuries of dorsolumbar spine (T9-L5), however additional cost of procuring CT scan to the patient and cost of equipment is of significant concern in developing countries. Reduced radiation exposure and lowered ergonomic constraints around the operation table are its additional benefits.
doi:10.4103/0019-5413.144216
PMCID: PMC4232823  PMID: 25404766
Dorso lumbar spine; Laine's grading; navigation; paired point matching; Spine; spinal fractures; bone screws; neuronavigation; tomography
2.  Hollow Mill for Extraction of Stripped Titanium Screws: An Easy, Quick, and Safe Technique 
Removal of jammed titanium screws can be difficult due to the problem of stripping of the hexagonal heads of the screws. We present a technique of extraction of stripped screws with the use of a standard 4.5 mm stainless steel hollow mill in a patient of peri-implant fracture of the radius fixed with a titanium locking plate 2 years back. The technique is quick, safe, and cost effective.
doi:10.4103/2006-8808.135135
PMCID: PMC4090986  PMID: 25013544
Hollow mill; stripped screws; titanium locked plates; titanium plates
3.  Repair of the torn distal biceps tendon by endobutton fixation 
Indian Journal of Orthopaedics  2012;46(1):71-76.
Background:
A number of techniques have been described to reattach the torn distal biceps tendon to the bicipital tuberosity. We report a retrospective analysis of single incision technique using an endobutton fixation in sports persons.
Materials and Methods:
The present series include nine torn distal biceps tendons in eight patients, fixed anatomically to the radial tuberosity with an endobutton by using a single incision surgical technique; seven patients had suffered the injuries during contact sports. The passage of the endobutton was facilitated by using a blunt tipped pin in order to avoid injury to the posterior interosseous nerve. The patients were evaluated by Disabilities of the Arm, Shoulder and Hand (DASH) score and Mayo elbow score.
Results:
The average age of the patients was 27.35 years (range 21–42 years). Average follow-up was 41.5 months (range 24–102 months). The final average flexion extension arc was 0°–143°, while the average pronation and supination angles were 77° (range 70°–82°) and 81° (range 78°–85°), respectively at the last followup. All the patients had a Disabilities of the Arm, Shoulder and Hand (DASH) score of 0 and a Mayo elbow score of 100 each. All the seven active sports persons were able to get back to their respective game. There was no nerve injury or any other complication.
Conclusions:
The surgical procedure used by us is a simple, safe and reproducible technique giving minimal morbidity and better cosmetic results.
doi:10.4103/0019-5413.91638
PMCID: PMC3270609  PMID: 22345810
Autograft; biceps tendon; elbow; tendon repair; tendon rupture
4.  Results of operative treatment of acetabular fractures from the Third World—how local factors affect the outcome 
International Orthopaedics  2007;33(2):347-352.
The objective of this study was to assess the outcome of operations on acetabular fractures from a developing country in the presence of locally available facilities. Sixty-three acetabular fractures were assessed at an average follow up of 52.94 months after operation. Twenty-six patients operated upon in the first three years and 37 operated thereafter were separately studied to discover the effect of the learning curve. Regarding the fractures, 47 of 63 (74.6%) had excellent/good results (Harris Hip Score>80). The complications included broken drill bit in eight patients (12.69%), deep infection and heterotopic ossification in five patients (7.93%), avascular necrosis and sciatic nerve palsy in two patients (3.17%) and implant failure in one patient (1.58%). The results collected during the learning curve were inferior in the complex fractures (p value<0.001). Complications were common in patients opting for local implants and in those operated after over 2 weeks delay.
doi:10.1007/s00264-007-0461-3
PMCID: PMC2899060  PMID: 17940767

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