Evaluation of Threaded External Skeletal Fixation Pin Insertion with and without Predrilling in Avian Bone

Abstract

Objective The aim of this study was to document the effects of positive-profile threaded external skeletal fixation (ESF) pin insertion without predrilling on heat generation, structural damage and pullout strength in avian bone than that with predrilling.

Study design This study was an ex vivo study.

Materials and Methods Twenty paired tibiotarsi and 40 paired humeri from 20 Mallard duck cadavers were used. Specimens were randomized to have positive-profile threaded ESF pins placed with or without predrilling insertion sites. Heat generation (maximum—baseline temperature) was measured during drilling and pin insertion with infrared thermography. Structural damage (gross trans-cortical damage and thread quality) was evaluated and scored using a visual analog scale (VAS). Mechanical testing was performed to evaluate pullout strength of inserted pins.

Results VAS scores for trans-cortical surfaces were significantly higher than for cis-cortical surfaces; however, no difference was noted between predrilled and non-predrilled specimens. No significant difference in heat generation or pullout strength was noted between pins placed with and without predrilling.

Conclusion Pin insertion without predrilling in avian humeri and tibiotarsi does not cause significantly more structural damage or heat generation, or reduced pullout strength, compared with predrilling. Overall, our results indicate that predrilling prior to ESF pin placement provides no obvious advantage in avian bone.

Keywords

external skeletal fixation pins - avian - bone - infrared thermography - pin pullout

Authors' Contributions

All authors contributed to conception of study, study design, acquisition of data and data analysis and interpretation. All authors drafted, revised and approved the submitted manuscript.

• References

• 1 Tully Jr TN. Basic avian bone growth and healing. Vet Clin North Am Exot Anim Pract 2002; 5 (01) 23-30
• 2 Hatt JM, Christen C, Sandmeier P. Clinical application of an external fixator in the repair of bone fractures in 28 birds. Vet Rec 2007; 160 (06) 188-194
• 3 Gull JM, Saveraid TC, Szabo D, Hatt JM. Evaluation of three miniplate systems for fracture stabilization in pigeons (Columba livia). J Avian Med Surg 2012; 26 (04) 203-212
• 4 Hollamby S, Dejardin LM, Sikarskie JG, Haeger J. Tibiotarsal fracture repair in a bald eagle (Haliaeetus leucocephalus) using an interlocking nail. J Zoo Wildl Med 2004; 35 (01) 77-81
• 5 Montgomery RD, Crandall E, Bellah JR. Use of a locking compression plate as an external fixator for repair of a tarsometatarsal fracture in a bald eagle (Haliaeetus leucocephalus). J Avian Med Surg 2011; 25 (02) 119-125
• 6 Anderson MA, Mann FA, Kinden DA, Wagner-Mann CC. Evaluation of cortical bone damage and axial holding power of nonthreaded and enhanced threaded pins placed with and without drilling of a pilot hole in femurs from canine cadavers. J Am Vet Med Assoc 1996; 208 (06) 883-887
• 7 Clary EM, Roe SC. Enhancing external skeletal fixation pin performance: consideration of the pin-bone interface. Vet Comp Orthop Traumatol 1995; 8: 1-8
• 8 Clary EM, Roe SC. In vitro biomechanical and histological assessment of pilot hole diameter for positive-profile external skeletal fixation pins in canine tibiae. Vet Surg 1996; 25 (06) 453-462
• 9 Augustin G, Zigman T, Davila S. , et al. Cortical bone drilling and thermal osteonecrosis. Clin Biomech (Bristol, Avon) 2012; 27 (04) 313-325
• 10 Pandey RK, Panda SS. Drilling of bone: a comprehensive review. J Clin Orthop Trauma 2013; 4 (01) 15-30
• 11 Degernes LA, Roe SC, Abrams Jr CF. Holding power of different pin designs and pin insertion methods in avian cortical bone. Vet Surg 1998; 27 (04) 301-306
• 12 Walker JT, Rochat MC, Snider TA, Payton ME. The relevance of threaded external skeletal fixation pin insertion speed in canine bone with and without predrilling. Vet Comp Orthop Traumatol 2014; 27 (04) 249-256
• 13 Castiñeiras Pérez E, Segade Seoane M, Villanueva Santamarina B, González Cantalapiedra A. Comparison of holding power of three different pin designs for external skeletal fixation in avian bone: a study in common buzzard (Buteo buteo). Vet Surg 2008; 37 (07) 702-705
• 14 Augustin G, Davila S, Udiljak T, Vedrina DS, Bagatin D. Determination of spatial distribution of increase in bone temperature during drilling by infrared thermography: preliminary report. Arch Orthop Trauma Surg 2009; 129 (05) 703-709
• 15 Koo TK, Li MY. A guideline of selecting and reporting intraclass correlation coefficients for reliability research. J Chiropr Med 2016; 15 (02) 155-163
• 16 Lee J, Ozdoganlar OB, Rabin Y. An experimental investigation on thermal exposure during bone drilling. Med Eng Phys 2012; 34 (10) 1510-1520
• 17 Reichelt R. Scanning electron microscopy. In: Hawkes P, Spence J. , eds. Science of Microscopy. New York City, New York: Springer; 2008: 133-272