Humeral Shaft Fracture Sustained During Arm Wrestling with Review of Factors Contributing to its Causation

Conservative Management of a Distal Humerus Spiral Fracture Sustained During Arm Wrestling: A Case Report and Literature Review

Arm wrestling is a popular recreational activity that involves intense and repetitive muscular contractions of the upper extremity. Arm wrestling can result in various musculoskeletal injuries, including bone fractures. Humeral shaft fractures, particularly spiral fractures, are the most common fractures resulting from arm wrestling. Here, we present a case of a 25-year-old male patient who sustained a distal humerus spiral fracture during an arm-wrestling competition. The patient was managed conservatively with external reduction, cast stabilization, and physiotherapy with good outcomes. Despite initial angulation and rotation, the fracture healed well, and the patient regained full function of his arm within eight weeks. This case highlights the biomechanical aspects and risk factors of this type of fracture during arm wrestling and the value of protective measures such as proper technique, training, and protective equipment. It also highlights the potential for conservative management in such cases.

Clinical Characteristics, Mechanism, and Outcome of Humeral Shaft Fractures Sustained during Arm Wrestling in Young Men: A Retrospective Study

OBJECTIVE

Humeral fractures are common in arm wrestling and other sports and military activities requiring similar movements; however, the precise mechanism is poorly understood. Here, we present an overview of the characteristics, possible mechanisms, and treatment of humeral shaft fractures sustained during arm wrestling.

METHODS

We reviewed 8 years (January 2013 to January 2021) of medical records and retrospectively analyzed data from 27 patients with humeral shaft fractures sustained during arm wrestling. The clinical data included sex, age, affected arm, alcohol consumption, muscle warm-up, history of competitive participation, opponents' characteristics, wrist position, and post-fracture radial nerve injuries. The fracture configurations were radiographically assessed and analyzed. Surgical management included single or dual plating. Scores on the Disability of the Arm, Shoulder, and Hand questionnaire (DASH) were evaluated preoperatively and postoperatively at the last follow-up visit.

RESULTS

All fractures sustained during arm wrestling were spiral fractures of the distal third of the humerus. Of these, 11 were 12-A1 type and 16 were 12-B2 type with a wedge fragment. The two subtypes differed in the total fracture line length (12-A1: 0.18 ± 0.04; 12-B2: 0.23 ± 0.04; P < 0.001). The radial nerve injury rate was 0/11 (0%) in patients with 12-A1 type fractures and 7/16 (43.8%) in patients with 12-B2 type fractures (P = 0.011). Most patients were young men (mean age, ~25 years) with a history of competitively participating in arm wrestling for >2 years. Cold seasonal temperatures and a lack of warm-ups increased the risk of injury. All patients showed improved DASH scores at the last follow-up (12-A1:77.82 ± 5.14 to 10.25 [5.38]; 12-B2:78.91 ± 7.46 to 8.95 [3.17]; P < 0.001). No significant differences were observed among the different surgical treatments.

CONCLUSIONS

Individuals who participated in arm wrestling were at risk of humeral shaft fractures (type 12-A1 or 12-B2). The 12-B2 type occurs with a wedge fragment and is frequently accompanied by radial nerve injuries. The characteristics of arm-wrestling fractures and the mechanism(s) underlying these fractures can help orthopedic surgeons understand the causes of these fractures and similar fractures sustained in traditional sports. This understanding will help surgeons choose more effective surgical treatments that will result in more desirable functional outcomes and a faster return to work.

Spiral Humeral Fracture During Arm Wrestling: A Case Report and Literature Review

Arm wrestling places an axial pressure load on the humerus with the glenohumeral joint stabilized and the elbow flexed and fixed. This situation can cause humeral shaft fractures. We present a case of humeral shaft fracture in a 22-year-old healthy man following an arm-wrestling challenge. The patient is known to be a bodybuilder and athlete. He presented to our university emergency department with a swollen and tender arm and intact neurovascular structures, reporting that he had recently engaged in arm wrestling with a colleague of similar shape and power. The fracture was treated conservatively based on the patient's informed decision using closed reduction and physiotherapy. He committed to scheduled clinic visits and physical therapy sessions and showed improvement with complete recovery and normal functioning on the thirteenth week.