Clinical Outcomes of Minimally Invasive Surgery in Sanders Type IV Intra-Articular Calcaneal Fractures

Article information

J Musculoskelet Trauma. 2019;32(4):181-187
Publication date (electronic) : 2019 January 10
doi : https://doi.org/10.12671/jkfs.2019.32.4.181
Department of Orthopaedic Surgery, School of Medicine, Chosun University, Gwangju, Korea
Correspondence to: Jun Young Lee, M.D., Ph.D. Department of Orthopaedic Surgery, School of Medicine, Chosun University, 365 Pilmun-daero, Dong-gu, Gwangju 61453, Korea Tel: +82-62-220-3147 Fax: +82-62-226-3379 E-mail: leejy88@chosun.ac.kr Financial support: This study was supported by research fund from Chosun University College of Medicine Scholarship. Conflict of interests: None
Received 2019 March 14; Revised 2019 May 05; Accepted 2019 September 25.

Abstract

Abstract

Purpose

This study evaluated the radiologic and clinical results in patients who underwent minimal invasive surgery using sinus tarsi approach in Sanders type IV calcaneal fracture.

Materials and Methods

This retrospective study evaluated 13 cases of Sanders type IV calcaneus fractures that were treated by minimal invasive surgery using the sinus tarsi approach from July 2012 to April 2017. Further, these cases could be followed up for more than 12 months. Bone union, radiologic parameters such as Böhler's angle, Gissane's angle, calcaneal height, length, and width, the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, and the postoperative complications were evaluated.

Results

Bony union was achieved in all the cases at the final follow up, and the mean union time was 5.5 months. One patient underwent reoperation for a surgical site infection, six patients had post traumatic arthritis, and two of them underwent subtalar joint fusion. The mean AOFAS ankle-hindfoot score was 81.2. At the final follow-up, the mean values of Böhler's angle and Gissane's angle were 20° and 119.8°, respectively, and the mean values of the calcaneus height, length, and width were 46.8 mm, 81.8 mm, and 45.6 mm, respectively.

Conclusion

Minimal invasive surgery using the sinus tarsi approach for Sanders type IV calcaneal fracture resulted in satisfactory anatomic reduction and stable fixation, and satisfactory clinical and radiologic results were obtained in most of the patients. Minimal invasive surgery is thought to reduce the soft tissue-related complications as compared to surgery using the extensile lateral approach.

Fig. 1.

(A) Preoperative X-ray and computed tomography showing a Sanders type IV and joint depressive type calcaneal fracture. (B) The postoperative X-ray showing restoration of the of Böhler's angle, Gissane's angle, and the calcaneus height, length, and width.

Fig. 2.

Photograph showing the sinus tarsi approach.

Fig. 3.

Intraoperative fluoroscope images showing posterior facet reduction using Schantz pin and fixation with 6.5 mm cannulated screws and K-wire.

Fig. 4.

Method of measurement of the calcaneal parameters.

Patients Demographics

Clinical and Radiologic Results

References

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Article information Continued

Fig. 1.

(A) Preoperative X-ray and computed tomography showing a Sanders type IV and joint depressive type calcaneal fracture. (B) The postoperative X-ray showing restoration of the of Böhler's angle, Gissane's angle, and the calcaneus height, length, and width.

Fig. 2.

Photograph showing the sinus tarsi approach.

Fig. 3.

Intraoperative fluoroscope images showing posterior facet reduction using Schantz pin and fixation with 6.5 mm cannulated screws and K-wire.

Fig. 4.

Method of measurement of the calcaneal parameters.

Table 1.

Patients Demographics

Case No. Age (yr)/ sex Side Injury mechanism Sanders classification Length of follow-up (mo) Length of bone union (mo) Implant
1 28/M L Fall down IV 28 14 6.5 CS ×3 4.0 CS ×1 K-wire ×1
2 57/M L Fall down IV 41 3 6.5 CS ×2 K-wire ×4
3 60/M Both Fall down IV 21 3 R: 6.5 CS ×2 K-wire ×1 L: 6.5 CS ×2 4.0 CS ×1
4 36/M R Fall down IV 14 4 6.5 CS ×2 4.0 CS ×1
5 67/M R Fall down IV 21 3 6.5 CS ×2 4.0 CS ×1
6 39/M Both Fall down IV 14 8 R: 6.5 CS ×2 K-wire ×2 L: 6.5 CS ×2 K-wire ×1
7 25/M L Fall down IV 17 4 6.5 CS ×2 4.0 CS ×1
8 37/F Both Fall down IV 14 3 R: 6.5 CS ×2 4.0 CS ×1 K-wire ×1 L: 6.5 CS ×2 K-wire ×2
9 45/M R Fall down IV 12 6 6.5 CS ×2 K-wire ×2
10 18/M L Fall down IV 12 7 6.5 CS ×2

4.0 CS ×1 M: male, F: female, L: left, R: right, CS: cannulated screw (unit: mm).

Table 2.

Clinical and Radiologic Results

Case No Age (yr)/ sex Preop Böhler's angle (°) Preop Gissane's angle (°) Preop calcaneus* (mm) Last Böhler's angle (°) Last Gissane's angle (°) Last calcaneus* (mm) Clinical results (AOFAS) ) Complication
1 28/M –51 71 36/78/55 17 115 48/79/49 64 Post-traumatic OA, surgical site infection
2 57/M 23 102 49/87/41 22 121 51/82/40 74 Post-traumatic OA
3 60/M R: 2 L: 1 R: 124 L: 147 R: 54/85/60 L: 42/87/56 R: 2 L: 11 R: 122 L: 118 R: 42/82/53 L: 42/88/55 R: 70 L: 80 Right post-traumatic OA
4 36/M 1 106 38/81/38 21 115 50/86/36 75  
5 67/M 0 117 39/74/46 13 121 40/73/45 88 Post-traumatic OA
6 39/M R: 36 L: 5 R: 114 L: 88 R: 48/73/48 L: 41/78/60 R: 39 L: 41 R: 124 L: 130 R: 44/76/48 L: 50/79/51 R: 81 L: 92 Right post-traumatic OA
7 25/M 11 122 50/87/47 21 115 56/90/45 95  
8 37/F R: –17 L: 4 R: 114 L: 122 R: 34/65/44 L: 33/68/45 R: 8 L: 24 R: 121 L: 121 R: 43/75/42 L: 43/75/43 R: 89 L: 90  
9 45/M –23 133 42/85/48 11 121 53/90/48 81 Post-traumatic OA
10 18/M –29 135 33/84/40 30 114 46/89/38 76  
Mean –2.84 115 41.5/79.4/48.3 20 119.8 46.8/81.8/45.6 81.2  
p-value e 0.650 0.443 0.369/0.479/0.364 0.566 0.408 0.460/0.567/0.364  

*Height/length/width. M: male, F: female, R: right, L: left, Preop: preoperative, OA: osteoarthritis.