06/06/2025
Calcaneus Fractures: Clinical Overview
Other Names
✓Calc Fracture
✓Displaced Intra-Articular Calcaneal Fracture (DIACF)
✓Lover's Fracture / Don Juan Fracture
✓Calcaneal Stress Fracture
Background
Calcaneus fractures involve disruption of the heel bone and may be acute or stress-related. These injuries were described as early as the time of Hippocrates. They represent a small but complex subset of musculoskeletal injuries due to the load-bearing nature of the calcaneus and its intricate articulation with surrounding structures.
Epidemiology
✓Account for 1–2% of all fractures
✓Represent 50–60% of tarsal fractures and 75% of foot fractures
✓10–17% are open fractures
✓75% are intra-articular
✓Peak incidence of calcaneal tuberosity fractures occurs in women in their 70s
Introduction
Mechanisms
Intra-articular fractures: Typically result from high-energy axial loading mechanisms such as falls from height or motor vehicle collisions.
Extra-articular fractures: Often involve avulsion injuries (e.g., tuberosity fractures) and may occur with low bone density or excessive muscular contraction.
Stress fractures: Seen in military recruits, runners, and individuals with increased repetitive heel-loading.
Associated Injuries
✓Lumbar/thoracic spine compression fractures (10%)
✓Tibial plateau fractures (10%)
✓Contralateral calcaneal fractures (10%)
✓Calcaneocuboid joint extension (63%)
Anatomy
The calcaneus, in conjunction with the talus, forms the hindfoot and is essential for weight transmission. It is the largest tarsal bone and forms part of the subtalar and calcaneocuboid joints.
Risk Factors
✓Osteoporosis
✓Diabetes Mellitus
✓Tobacco use
Differential Diagnosis
Includes fractures (tibia, fibula, talus), tendon injuries (Achilles, peroneal), ligament sprains, arthritis, and pediatric disorders (e.g., Sever’s disease).
Clinical Features
History & Physical Exam
✓Pain, swelling, and inability to bear weight are hallmark symptoms
✓Physical signs may include heel widening, bruising, tenderness, and Achilles tendon retraction in avulsion injuries
✓Evaluate for skin integrity and neurovascular compromise
✓Calcaneal Squeeze Test may assist in diagnosing stress fractures.
Evaluation
Radiographs
First-line imaging
Bohler’s Angle (145° or 2 mm), tongue-type fractures, or fractures causing malalignment
Options: ORIF, percutaneous pinning, or subtalar arthrodesis
Rehabilitation and Return to Play
Postoperative
NWB for 8–12 weeks
Gradual rehab with ROM and strengthening exercises
Radiographic monitoring for healing
Return to Play
Individualized
Based on fracture union, pain resolution, and restored function
Prognosis and Complications
Prognosis
Up to 40% complication rate
Sanders III fractures are 4 × more likely to require fusion than Sanders II at 10-year follow-up[^26]
Better prognosis: female s*x, younger age, light work, higher Bohler’s angle
Complications
Wound complications (up to 37%)
Compartment syndrome (10%)
Subtalar arthritis (more common with nonoperative treatment)
Chronic pain, malunion, osteomyelitis, tendon injury
References
Thomas R, et al. Foot Ankle Clin. 2019;24(4):585-598.
Mitchell MJ, et al. Clin Orthop Relat Res. 1991;(266):128-134.
Buckley R, et al. J Orthop Trauma. 2002;16(4):283–293.
Folk JW, Starr AJ, Early JS. J Orthop Trauma. 1999;13(5):359–364.
Luchetti TJ, et al. J Foot Ankle Surg. 2020;59(1):72–76.
Sanders R. Instr Course Lect. 2004;53:243-261.
Beavis RC, et al. Foot Ankle. 2008;28(7):738-743.
Brukner P, Khan K. Clinical Sports Medicine, 5th ed. McGraw-Hill; 2019.
Ess*x-Lopresti P. J Bone Joint Surg Br. 1952;34(4):566-576.
Rammelt S, Zwipp H. Injury. 2004;35(5):SB7–SB16.
Crosby LA, Fitzgibbons T. Clin Orthop Relat Res. 1996;(320):227–232.
Zwipp H, et al. Clin Orthop Relat Res. 1993;(290):112–121.
Gray H. Gray’s Anatomy. 41st ed. Elsevier; 2015.
Bibbo C, et al. Foot Ankle Int. 2003;24(11):847–850.
Greaney RB, et al. Radiology. 1983;146(2):349–353.
Bohler L. Arch Orthop Unfallchir. 1931;29:1–15.
Gissane W. Proceedings of the British Orthopaedic Association. 1947.
Sanders R, et al. J Bone Joint Surg Am. 1993;75(2):182–194.
Hughes JL, et al. Foot Ankle. 1984;4(2):69–102.
Sanders R. J Orthop Trauma. 1992;6(2):120–124.
Ess*x-Lopresti P. J Bone Joint Surg Br. 1952;34(4):566-576.
Beavis RC, et al. Foot Ankle Int. 2008;29(7):738-743.
Parmar HV, Triffitt PD. J Bone Joint Surg Br. 1993;75(2):189–195.
Buckley RE, et al. J Bone Joint Surg Am. 2002;84(10):1733–1744.
Griffin D, et al. J Bone Joint Surg Br. 2014;96-B(8):1071–1078.
Sanders R, et al. Foot Ankle Int. 2014;35(9):857–869.
Dhawan V, et al. Foot Ankle Int. 2004;25(12):930–935.
Benirschke SK, et al. Foot Ankle Int. 2002;23(12):1031–1037.
Myerson MS, Quill GE Jr. Orthop Clin North Am. 1989;20(4):665–677.
Loucks C, Buckley R. J Orthop Trauma. 1999;13(8):559–566.
. .