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Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_5 | Pages 131 - 131
1 Mar 2017
Sadeghi M Mirghasemi S Rashidinia S Gabaran N Talebizadeh M Eftekhari S
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Objectives

Despite promising results have shown by osteogenic cell-based demineralized bone matrix composites, they need to be optimized for grafts that act as structural frameworks in load-bearing defects. The aims of this study is attempt to assess the effects of laser perforations on osteoinduction in cortical bone allografts.

Methods

Sixteen wistar rats were divided into two groups according to the type of structural bone allograft; the first: partially demineralized only (Donly) and the second: partially demineralized laser-perforated (DLP). Trans-cortical holes were achieved by Er:YAG laser at a wave length of 2.94 µm in four rows of three holes approximated cylindrical holes 0.5 mm in diameter, with centres 2.5 mm apart. Histologic and histomorphometric analysis were performed at 12 weeks.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_5 | Pages 100 - 100
1 Mar 2017
Gabaran N Mirghasemi S Rashidinia S Sadeghi M Talebizadeh M
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Background

Surgical reconstruction of the anterior cruciate ligament is a common practice to treat the disability or chronic instability of the knee. Several factors associated with success or failure of the ACL reconstruction, including surgical technique and graft material and graft tension. We aimed to show how we can optimize the graft properties and achieve better post surgical outcomes during ACL reconstruction using 3-dimensional computational finite element simulation.

Methods

In this paper, 3-dimensional model of the knee was constructed to investigate the effect of graft tensioning on the knee joint biomechanics. Four different grafts were compared: 1) bone-patellar tendon-bone graft (BPTB) 2) Hamstring tendon 3) BPTB and a band of gracilis 4) Hamstring and a band of gracilis. The initial graft tension was set as “0, 20, 40, or 60N”. The anterior loading was set to 134 N.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_5 | Pages 22 - 22
1 Mar 2017
Mirghasemi S Rasouli M Maltenfort M Rashidinia S Parvizi J
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Background

There are several surgical options available for patients with bilateral knee osteoarthritis including simultaneous bilateral TKA (BTKA) and staged approach. The appropriate and safe time interval between two stages is still controversial. The preset systematic review aims to determine the optimal time interval between two stages of BTKA.

Methods

Pubmed database was searched from 1979 to 2013 for English-language studies that compared the outcomes of each surgical approach. Comparison was carried out on unilateral TKA and two-staged BTKA as well as on different time intervals in two-staged BTKA.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_5 | Pages 23 - 23
1 Mar 2017
Mirghasemi S Maltenfort M Tabatabaee R Rasouli M Rashidinia S Parvizi J
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Introduction

Reported data on impact of obesity on outcome of total joint arthroplasty (TJA) is mixed. The purpose of this systematic review was to evaluate the impact of obesity on surgical procedure and postoperative outcomes after total hip and knee arthroplasty.

Methods

Pubmed and Scopus databases were searched from 2000 to 2013 for English-language studies that compared the outcomes of total hip or knee arthroplasty between different body mass index (BMI) groups. Data from these studies were pooled and analyzed.


Bone & Joint Research
Vol. 4, Issue 11 | Pages 176 - 180
1 Nov 2015
Mirghasemi SA Rashidinia S Sadeghi MS Talebizadeh M Rahimi N

Objectives

There are various pin-in-plaster methods for treating fractures of the distal radius. The purpose of this study is to introduce a modified technique of ‘pin in plaster’.

Methods

Fifty-four patients with fractures of the distal radius were followed for one year post-operatively. Patients were excluded if they had type B fractures according to AO classification, multiple injuries or pathological fractures, and were treated more than seven days after injury. Range of movement and functional results were evaluated at three and six months and one and two years post-operatively. Radiographic parameters including radial inclination, tilt, and height, were measured pre- and post-operatively.