Comparison of unilateral rostral,middle and caudal segmental mandibulectomies as an alternative treatment for unilateral temporomandibular joint ankylosis in cats: an ex vivo study

Lenin A Villamizar-Martinez, Han Chia, James B Robertson, Cristian M Villegas and Alexander M Reiter J Feline Med Surg 2021; 23: 783–793

Readers should note that this article, which appeared in print in August 2021 and is published online, has an error in the labelling in Tables 1 and 2 and Figures 9 and 10. In these tables and figures, ‘mm’ should be ‘cm’. The corrected versions of the tables and figures are shown below:

Table 1

Skull size and the preoperative vertical range of mandibular motion for the rostral, middle, and caudal segmental mandibulectomies

	Rostral segmental mandibulectomy (n = 10)	Middle segmental mandibulectomy (n = 10)	Caudal segmental mandibulectomy (n = 10)	P value
Skull size (cm)	8.62 ± 0.82 (7.5–10)	8.00 ± 0.48 (7.1–9.1)	8.52 ± 0.52 (7.9–9.5)	0.035
Preoperative vertical range of mandibular motion (cm)	4.67 ± 0.85 (3.6– 6.4)	4.33 ± 0.46 (3.4–4.9)	4.66 ± 0.61 (3.8–5.9)	0.612

Data are mean ± SD (range). P <0.05 shows a significant statistical difference between the skull size

Table 2

Comparison of the pre- and postoperative vertical range of mandibular motion for the rostral, middle and caudal segmental mandibulectomies

Segmental mandibulectomy	n	Preoperative vertical range of mandibular motion (cm)	Postoperative vertical range of mandibular motion (cm)	P value
Rostral	10	4.67 ± 0.85 (3.6–6.4)	2.1–2.8 (2.29) 0.21	<0.001
Middle	10	4.33 ± 0.46 (3.4–4.9)	3.55 ± 063 (2.5–4.5)	<0.001
Caudal	10	4.66 ± 0.61 (3.8–5.9)	4.2 ± 0.61 (3.5–5.5)	<0.001

Data are mean ± SD (range). Significant statistical difference was observed between the pre- and postoperative vertical range of mandibular motion between the proposed mandibulectomies

Figure 9

Relationship between the preoperative vertical range of mandibular motion and the size of the head. Larger heads showed a wider preoperative mouth opening; however, this was not statistically significant

Figure 10

Relationship between the size of the removed segment of the mandible and the size of the head. Larger heads were associated with larger osteotomized bony segments; however, this was not statistically significant