Closed proximal muscle rupture of the biceps brachii in wakeboarders

The morphometric parameters of the biceps brachii: cadaveric study

BACKGROUND

The biceps brachii (BB) is a fusiform muscle comprising of two muscular bellies located in the anterior compartment of the arm. Its primary function includes elbow flexion and forearm supination.

PURPOSE

The study aimed to examine the morphometric parameters of the BB in adult cadaveric specimens.

METHODS

This dissection-based study examined the anatomy of the BB in 40 arms taken from 20 Thiel embalmed European cadavers, including 13 males with an average age of 81 years and seven females with an average age of 84 years. The investigation included an observational inspection of the BB morphology and collected 19 parameters, comprising the lengths and widths of the short and long head tendons and muscle bellies.

RESULTS

The observation analysis showed that the anatomy of the BB consisted mainly of two muscle bellies: a short head and a long head. An additional third humeral head, originating from the anteromedial aspect of the mid of the humerus and inserted into the common biceps tendon, was observed in four (10%) specimens. The average lengths of the short head and long head were 35.98 ± 3.44 cm and 38.90 ± 3.40 cm, respectively. There was no difference in the BB parameters according to the arm sides. However, the male specimens showed greater BB parameters than the female specimens.

CONCLUSION

The short head had a greater muscle belly, while the long head had a longer origin and insertion tendons. The BB parameters were correlated positively with the humerus length.

Blunt rupture of the biceps brachii muscle - The "parachute injury" in a wake surfer - A case report

Case

A 40-year-old man fell while wake surfing and his left arm got tangled in the rope. This caused a closed complete rupture of the M. biceps brachii. A primary muscle suture led to unrestricted function and excellent patient satisfaction after two years.

Conclusions

The mentioned muscle rupture is a rare injury mainly described for paratroopers. As it has also been described for wakeboarding, this is the first description in wake surfing. Whereas in wakeboarding mainly experts are at risk during jumps, in wake surfing beginners are in danger and must be advised accordingly. Generally, the muscle suture leads to excellent function in these patients.

Complete Intrasubstance Rupture of the Biceps Brachii Via Atypical Eccentric Contraction: A Case Report

CASE

A 46-year-old man presented with extensive swelling and ecchymosis of the arm and antecubital fossa after a 4-foot fall from a ladder in which he attempted to arrest his decent by grabbing onto a wooden ceiling beam. Ultrasound and magnetic resonance imaging confirmed a complete intrasubstance rupture of the biceps brachii. Nonoperative management was recommended and, at 9-week follow-up, the patient had resumed light weightlifting and demonstrated painless full active range of motion.

CONCLUSIONS

Uncommon complete intrasubstance biceps brachii ruptures can occur via an atypical mechanism of isotonic eccentric muscle contraction and satisfactory results may be realized through nonoperative management.

Complete Intrasubstance Long Head Biceps Brachii Rupture with Successful Repair: A Case Report

INTRODUCTION

Intrasubstance biceps brachii rupture is a rare injury. Non-operative management of this injury has demonstrated worse outcomes than early operative intervention.

CASE REPORT

We report a case of a traumatic long head of the biceps brachii muscle belly rupture repaired primarily throughthe Kragh technique augmented with human dermal collagen matrix. The patient demonstrated full strength, an intact repair throughclinical exam and magnetic resonance imaging at 6-year follow-up. Dash scoring demonstrated 0 (no disability) out of 100 at this time.

CONCLUSION

Repair of acute traumatic closed transection of the biceps brachii can be successfully repaired utilizing this technique with excellent post-operative function.

Conservative treatment of a proximal full-thickness biceps brachii muscle tear in a special operations soldier

BACKGROUND

A transection of the short head of the biceps brachii muscle is an uncommon injury seen among outpatient sports physical therapy clinics. The highest rate of occurrence and the majority of literature that discusses this specific injury are related to US military parachuting. The purpose of this case report is to outline the episode of care from 2 days after the injury through 6 months of conservative treatment, which consisted of therapeutic exercise, manual therapy, and cryotherapy, within an outpatient sports physical therapy clinic in a military setting.

CASE DESCRIPTION

This case report outlines the initial evaluation, diagnostic imaging, treatment, and 6-month follow-up measures for a 23-year-old male patient who sustained a static line injury resulting in a full-thickness tear of his biceps brachii muscle and a partial tear of the coracobrachialis muscle.

OUTCOMES

The individual described in this case report reported having no functional limitations in regard to his job and leisure activities or any pain at his 6-month follow-up, with a score of 0% noted on his Shortened Disabilities of the Arm, Shoulder, and Hand Questionnaire (QuickDASH). Isokinetic testing revealed a 39.1% decrease in elbow flexion peak torque and a 60.8% decrease in elbow flexion total work output at this same follow-up interval.

DISCUSSION

In determining the appropriate course of treatment for this injury type, conservative physical therapy intervention should be considered as a viable treatment option, as there have been no decisive studies to suggest superior outcomes with other methods such as surgical correction. It is further recommended that research be conducted in an effort to prevent such injuries from occurring, as this mechanism of injury has proven to be much higher among the US military population compared with other military populations.