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Special Section Technical Briefs

Low-Cost Three-Dimensional Printed Surgical Drill-Guiding Device for MPFL Reconstruction (Pat-Rig)1

[+] Author and Article Information
Roopam Dey, Stefan Steiner

Orthopaedic Biomechanics Lab,
Division of Biomedical Engineering,
Department of Human Biology,
Faculty of Health Sciences,
University of Cape Town,
Cape Town 7925, South Africa

Sarthak Patnaik

Department of Arthroscopy and Sport Center,
Sunshine Hospital,
Bhubaneshwar, Odisha 751066, India

Sudesh Sivarasu

Orthopaedic Biomechanics Lab,
Division of Biomedical Engineering,
Department of Human Biology,
Faculty of Health Sciences,
University of Cape Town,
Cape Town 7925, South Africa
e-mail: Sudesh.Sivarasu@uct.ac.za

2Corresponding author.

DOI: 10.1115/1.4033205Manuscript received March 1, 2016; final manuscript received March 17, 2016; published online May 12, 2016. Editor: William Durfee.

J. Med. Devices 10(2), 020914 (May 12, 2016) (3 pages) Paper No: MED-16-1154; doi: 10.1115/1.4033205 History: Received March 01, 2016; Revised March 17, 2016

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References

Sillanpaa, P. , Mattila, V. M. , and Livonen, T. , 2008, “ Incidence and Risk Factors of Acute Traumatic Primary Patella Dislocation,” Med. Sci. Sports Exercise, 40(4), pp. 606–611. [CrossRef]
Ahmed, C. S. , Brown, G. D. , and Stein, B. S. , 2009, “ The Docking Technique of Medial Patellofemoral Ligament Reconstruction: Surgical Technique and Clinical Outcome,” Am. J. Sports Med., 37(10), pp. 2021–2027. [CrossRef] [PubMed]
Sally, P. I. , Poggi, J. , and Speer, K. P. , 1996, “ Acute Dislocation of the Patella: A Correlative Pathoanatomic Study,” Am. J. Sports Med., 24(1), pp. 52–60. [CrossRef] [PubMed]
Trikha, S. P. , Acton, D. , O'Reilly, M. , Curtis, M. J. , and Bell, J. , 2003, “ Acute Lateral Dislocation of the Patella: Correlation of Ultrasound Scanning With Operative Findings,” Injury, 34(8), pp. 568–571. [CrossRef] [PubMed]
Stefancin, J. J. , and Parker, R. D. , 2007, “ First Time Traumatic Patella Dislocation: A Systematic Review,” Clin. Orthop. Relat. Res., 455, pp. 93–101. [CrossRef] [PubMed]
Steensen, R. N. , Dopirak, R. M. , and McDonald, W. G. , 2004, “ The Anatomy and Isometry of the Medial Patello Femoral Ligament,” Am. J. Sports Med., 32(6), pp. 1509–1513. [CrossRef] [PubMed]
Elias, J. J. , and Cosgarea, A. J. , 2006, “ Technical Errors During Medialpatellofemoral Ligament Reconstruction Could Overload Medial Patellofemoral Cartilage: A Computational Analysis,” Am. J. Sports Med., 34(9), pp. 1478–1485. [CrossRef] [PubMed]
Parikh, S. N. , Nathan, S. T. , Wall, E. J. , and Eismann, E. A. , 2013, “ Complications of Medial Patellofemoral Ligament Reconstruction in Young Patients,” Am. J. Sports Med., 41(5), pp. 1030–1038. [CrossRef] [PubMed]
Schottle, P. B. , Fucentse, S. F. , and Romero, J. , 2005, “ Clinical and Radiological Outcome of MPFL Reconstruction With Semitendinosus With Autograft for Patella Instability,” Knee Surg. Sports Traumatol. Arthrosc., 13(7), pp. 516–521. [CrossRef] [PubMed]
Patnaik, S. , and Sivarasu, S. , 2015, “ Patellofixator Rig—Design Specifications of a Device Assisting Medial Patello Femoral Ligament [MPFL] Reconstruction,” 7th WACBE World Congress on Bioengineering, Singapore, July 6–8, Vol. 52, pp. 96–99.
Sivarasu, S. , and Patnaik, S. , 2015, “ Accessory for Conducting Patella Surgery [Pat-Rig],” British Patent Application No. GB1511597.5.

Figures

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Fig. 1

The CAD model of the drill-guiding device: the medio-superior component with slots for housing the drill-guides (1), the inferior component (2), the lateral component (3), the drill guide housing with two 4.5 mm drill guides and 2.5 mm drill-guide (4), and the drill-depth measuring scale (5). Top view of the device around a patella (inset).

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Fig. 2

The isometric view of the fully assembled drill-guiding device. Medial view of the device with the inserted drill-guide housing and the radio-opaque scale (inset).

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Fig. 3

The device placed around a 3D-printed patella. The dashed and solid show the 4.5 mm and 2.5 mm parallel drill holes, respectively. Green-double-headed arrows represent the clearance between the edges of patella and the device.

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Fig. 4

Radiographic image of the Pat-Rig accurately showing the penetration depth of the drill (25 mm with regard to the medial border), which was inserted through the drill-guide holes (inset) and the drilling distance (27.5 mm with regard to the superior border)

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Fig. 5

(a) The drill-guide housing was positioned 10 mm (dz) from the superior face of the patella, (b) medio-lateral holes were drilled into the bone, and (c) cross-sectional view of the drilled holes and the formed bone bridge

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Fig. 6

(a) Orienting the subject's knee at 60 deg flexion and (b) securing the device around the subject's knee

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