Determining the incidence and risk factors for short-term complications following distal biceps tendon repair

Background: Distal biceps rupture is a relatively uncommon injury that can significantly affect quality of life. Surgical repair has the potential to provide functional improvement for patients. However, early complications following biceps tendon repair are not well described in the literature. This study aims to utilize a verified national surgical database to determine the incidence of and predictors for various short-term complications following distal biceps tendon repair. Methods: The American College of Surgeons’ National Surgical Quality Improvement Program database was used to identify patients undergoing distal biceps repair between January 1, 2011, and December 31, 2017. Patient demographic variables of sex, age, body mass index (BMI), American Society of Anesthesiologists class, functional status, and several comorbidities were reported for each patient, along with various 30-day postoperative complications. Binary logistic regression was used to calculate risk ratios for these complications using patient predictor variables.Results: Early postoperative overall surgical complications (0.5%)—which were mostly infections (0.4%)—and overall medical complications (0.3%) were rare. A risk factor for readmission was diabetes (risk ratio [RR], 4.238; 95% confidence interval [CI], 1.180–15.218). Risk factors for non-home discharge were smoking (RR, 3.006; 95% CI, 1.123–8.044) and 60 years of age (RR, 4.150; 95% CI, 1.611–10.686). Maleness was protective for medical complications (RR, 0.024; 95% CI, 0.005–0.126). Risk factors for surgical complications were obese class II (RR, 4.120; 95% CI, 1.123–15.120]), chronic obstructive pulmonary disease (COPD; RR, 21.981; 95% CI, 3.719–129.924), and inpatient surgery (RR, 8.606; 95% CI, 2.266–32.689). An independent functional status was protective against surgical complications (RR, 0.023; 95% CI, 0.002–0.221).Conclusions: Overall complication rates after distal biceps repair are quite low. Patient demographics (sex, age, BMI, and functional status), medical comorbidities (diabetes, smoking, and COPD), and surgical factors (inpatient versus outpatient surgery) were all predictive of various short-term complications.

Isolated Complete Distal Biceps Femoris Tendon Tears: Case Series and Literature Review

The Biceps femoris is a vital component of the posterolateral corner of the knee. We report two cases of isolated rupture of the biceps femoris, discuss the possible mechanism of injury, and review the literature.

Augmentation of Distal Biceps Tendon Ruptures With the Lacertus Fibrosus: A Biomechanical Study in a Tendon-Deficient Model

Background: Chronic distal biceps tendon ruptures may require tendon graft augmentation secondary to tendon attrition or retraction. The lacertus fibrosus is a local, cost-effective graft that can be used to supplement reconstruction. Purpose: To compare the biomechanical strength of distal biceps tendon repairs with and without lacertus fibrosus augmentation in a tendon-deficient cadaveric model. Study Design: Controlled laboratory study. Methods: Sixteen fresh-frozen matched cadaveric pairs of elbows were randomized into 2 groups: (1) standard distal biceps tendon repair and (2) tendon-deficient (50% step cut) repair with lacertus fibrosus augmentation. All repairs were completed using an oval bone trough and 2 double-loaded No. 2 braided nonabsorbable sutures in a locked Krackow fashion tied over a lateral bone bridge. For the lacertus augmentation group, the lacertus was wrapped circumferentially in a tubular fashion around the tendon to restore the native size and incorporated into the Krackow suture. All specimens underwent cyclic loading and then were loaded to failure. Displacement, stiffness, load to failure, and mode of failure were recorded. Results: The standard repair and lacertus augmentation groups had similar displacements on cyclic loading (1.66 ± 0.62 vs 1.62 ± 0.58 mm, respectively; P = .894). The stiffness was significantly greater for the standard repair group (21.3 ± 2.5 vs 18.5 ± 3.5 N/mm; P = .044). Both groups provided excellent mean peak load to failure strengths, despite the standard repair group having significantly greater strength (462.4 ± 140.5 vs 377.3 ± 101.1 N; P = .022). The primary mode of failure in the standard repair group was fracture at the bone bridge (n = 5/8) compared with suture pullout (n = 4/8) in the lacertus augmentation group. Conclusion: Lacertus fibrosus augmentation of a tendon-deficient biceps repair was less stiff and had lower mean load to failure compared with repair of the native tendon in this cadaveric model, but these values remained biomechanically acceptable above critical thresholds. Consequently, lacertus fibrosus augmentation is a viable option for chronic distal biceps tendon ruptures with tendon attrition. Clinical Relevance: Chronic distal biceps tendon ruptures may require autograft or allograft reconstruction secondary to tendon scarring, shortening, attrition, and degeneration. The lacertus fibrosus is a cost-effective and low-morbidity local autograft that can be used to augment repairs.

Surgical Results of Chronic Distal Biceps Ruptures: A Systematic Review

Background: Distal biceps tendon tears can cause weakness and fatigue with activities requiring elbow flexion and supination. Surgical management of chronic tears (>21 days) is not well described in the literature. Purpose: To determine the clinical outcomes of chronic distal biceps repairs and reconstructions. Study Design: Systematic review; Level of evidence, 4. Methods: We performed a search of Medline (PubMed and Ovid), EMBASE, CINAHL physical therapy, Cochrane Database of Systematic Reviews and Central Register of Controlled Trials, and PubMed Central from inception until September 29, 2020, to identify articles on chronic distal biceps ruptures. The inclusion criteria were studies with at least 1 outcome measure and 10 patients with chronic distal biceps ruptures treated surgically. The quality of the included studies was assessed with the methodological index for nonrandomized studies (MINORS) score. Functional outcomes and complications were reviewed. Results: A total of 12 studies were included after systematic database screenings. The MINORS scores ranged from 5 to 19. There were a total of 1704 distal biceps ruptures, of which 1270 were acute and 434 were chronic. Average follow-up time was 12 months to 5.1 years. Single-incision (n = 3), 2-incision (n = 2), or both (n = 6) surgical techniques were used in these studies. Four studies described the use of autografts, and 4 articles used allografts in the chronic repair. Range of motion, function, and strength outcomes were similar when compared with the contralateral arm. Pain was reduced to minimal levels. Main postoperative complications were of paresthesia (specifically to the lateral antebrachial cutaneous nerve), which were temporary in 69.1% of cases. Conclusion: The results of this review indicate that surgical management of chronic distal biceps ruptures demonstrates improvement in outcomes including pain reduction and functional ability. Although there may be a slightly higher immediate complication rate, the functional outcomes remain comparable with those seen in the patient population with acute distal biceps.