What's New — Hip — January 2026¶

26 new articles published this month.

Themes: Hip Arthroscopy: Biomechanics and Precision · Geriatric Hip Fracture: Outcomes and Management · Total Hip Arthroplasty: Bearings, Infection, and Demographics · Pediatric Hip, Tumors, and Special Populations · Data Quality and Epidemiology in Hip Care · Intertrochanteric Fractures and Implant Design

Digest generated 2026-04-16 01:06:48+00:00.

Highlights¶

Hip Arthroscopy: Biomechanics and Precision¶

Recent literature critically examines the biomechanical consequences of capsular management and the efficacy of navigation in femoroacetabular impingement (FAI) surgery. Studies demonstrate that periportal capsulotomies significantly compromise axial stability, necessitating repair in specific phenotypes [16, 19]. Furthermore, while navigation is utilized to improve precision, evidence suggests it does not guarantee complete resection of cam deformities or prevent residual impingement [17, 21]. Concurrently, research indicates that impingement often occurs at lower flexion angles than previously assumed, and outcomes for patients with acetabular retroversion remain comparable to controls, challenging the reliance on 2D imaging for surgical planning [15, 18, 22].

Geriatric Hip Fracture: Outcomes and Management¶

This cluster addresses critical aspects of geriatric hip fracture care, focusing on surgical timing, fixation strategies, and long-term recovery trajectories. Systematic reviews highlight the complex relationship between time to surgery and patient outcomes, questioning strict performance indicators [23]. In terms of fixation, comparative studies evaluate the efficacy of fully threaded versus partially threaded cannulated screws for femoral neck fractures [9], and investigate the reliability of tip-apex distance as a predictor of failure [12]. Additionally, novel analytical approaches using growth mixture modeling have identified distinct quality of life trajectories following surgery, suggesting a need for tailored rehabilitation strategies [7].

Total Hip Arthroplasty: Bearings, Infection, and Demographics¶

Articles in this theme explore long-term durability, infection management, and demographic considerations in total hip arthroplasty. Long-term data reveals progressive wear divergence in ceramic bearings due to zirconia degradation beyond ten years [1]. Regarding infection, meta-analyses suggest that extended postoperative oral antibiotic prophylaxis significantly reduces reinfection risks following two-stage exchange arthroplasty [10]. Demographic factors are also scrutinized, with studies assessing the impact of hip offset parameters on functional outcomes [2] and investigating the specific fit of femoral stems in Asian female populations [5].

Pediatric Hip, Tumors, and Special Populations¶

This theme covers diverse conditions affecting younger populations and those with complex comorbidities. Research includes the use of megaprosthesis in pediatric patients, comparing outcomes based on the status of the triradiate physis [25]. Oncological management is addressed through a study on giant cell tumors treated with curettage and denosumab [11]. Furthermore, pediatric transient synovitis is analyzed for its ultrasonographic features and recurrence risks [6]. Finally, the impact of fibromyalgia on hip arthroscopy outcomes is evaluated, noting increased opioid prescriptions despite similar reoperation rates, prompting calls for multimodal care [14, 20].

Data Quality and Epidemiology in Hip Care¶

Two studies focus on the broader epidemiological landscape and the statistical integrity of outcome reporting. A systematic review and meta-analysis provide updated prevalence data for hip and knee osteoarthritis across Europe [3]. Concurrently, a population-based study investigates the mechanism of missing patient-reported outcome measures (PROMs) in arthroplasty registries, finding that missing data is often 'not at random' and correlates with specific demographic and clinical factors [26]. Additionally, a mapping review identifies the wide variety of PROMs currently utilized in hip fracture trials, highlighting inconsistencies in their selection and validation [8].

Intertrochanteric Fractures and Implant Design¶

This theme focuses specifically on the surgical management of intertrochanteric fractures. A systematic review and meta-analysis compare the clinical outcomes of integrated dual-lag screw systems versus single lag screw cephalomedullary nails. The review synthesizes evidence regarding implant failure rates, functional recovery, and complication profiles to guide the selection of fixation devices for this common fracture pattern [4].

Articles by Theme¶

Hip Arthroscopy: Biomechanics and Precision (7)¶

15. Johnson BT, Hunter CDR, Metz AK, et al. Impingement in Patients With Femoroacetabular Impingement Syndrome Routinely Occurs Below 90° of Hip Flexion. Arthroscopy 2026. doi:10.1002/arj.70005

This study determined the specific angle of hip flexion at which femoral neck chondral lesions engage the labrum in patients with femoroacetabular impingement syndrome (FAIS). The mean impingement angle was found to be 63.3°, indicating that impingement routinely occurs well below the 90° flexion threshold often assumed in clinical assessments. These results suggest that diagnostic and surgical evaluations for FAIS should account for impingement occurring at lower flexion angles.

16. Puzzitiello RN, Johnson BT, Khalil AZ, et al. Biomechanical Stability of the Hip Is Impacted by Choice of Partial or Complete Closure of the Capsule Following a Periportal Capsulotomy: An In Vivo Time‐Zero Comparison. Arthroscopy 2026. doi:10.1002/arj.70006

An in vivo biomechanical study compared the stability of the hip following periportal capsulotomy with partial versus complete capsular repair. The results showed that complete repair (both anterior and anterolateral portals) restored resistance to axial distraction significantly better than partial repair, which remained more lax than the native state. This supports the clinical practice of performing complete capsular closure to maintain hip stability after arthroscopy.

17. Ogura K, Kobayashi N, Yukizawa Y, et al. Even With Navigational Assistance for Hip Femoroacetabular Impingement Surgery, Insufficient Cam Resection, and Associated Residual Impingement May Occur. Arthroscopy 2026. doi:10.1002/arj.70015

This study evaluated the accuracy of navigation-assisted arthroscopic osteochondroplasty for femoroacetabular impingement by analyzing residual deformity volumes and simulating postoperative impingement. Key findings revealed that despite navigational assistance, insufficient cam resection and residual impingement frequently occurred in a subset of patients. Clinically, this suggests that navigation alone cannot guarantee complete deformity correction, necessitating careful intraoperative assessment beyond preoperative planning.

18. Torabian KA, Vega JF, Cervantes JE, et al. Hip Arthroscopy for Femoroacetabular Impingement Syndrome Yields Comparable Outcomes in Patients With and Without Acetabular Retroversion: A Systematic Review. Arthroscopy 2026. doi:10.1002/arj.70023

Précis unavailable.

19. Tjong VK. Editorial Commentary : Periportal Capsulotomies Create Significant Axial Distraction in Hip Arthroscopy and Should be Repaired in Certain Hip Phenotypes. Arthroscopy 2026. doi:10.1002/arj.70035

This editorial commentary examines whether smaller periportal capsulotomies in hip arthroscopy cause significant axial distraction similar to larger incisions. The authors argue that capsular preservation should be maintained for specific hip phenotypes to respect anatomical integrity and biomechanical properties. The implication is that surgeons should consider repairing these smaller capsulotomies rather than leaving them open, particularly in patients who require capsular stability.

21. Ochiai D. Editorial Commentary : Use of Navigational Assistance for Hip Femoroacetabular Impingement Surgery Does Not Guarantee Better Surgical Precision. Arthroscopy 2026. doi:10.1002/arj.70037

This editorial argues that navigational assistance in hip femoroacetabular impingement surgery does not inherently ensure greater surgical precision or better outcomes. The author highlights that factors such as atraumatic access, labral management, and capsular handling are equally critical to success. Consequently, surgeons should not rely solely on navigation but must prioritize overall surgical technique and soft tissue management.

22. Sawyer E, Hartigan D. Editorial Commentary : Flat Earth—Why 2‐Dimensional Imaging Reveals Acetabular Retroversion's Minimal Impact of Arthroscopic Outcomes. Arthroscopy 2026. doi:10.1002/arj.70044

This commentary discusses the minimal impact of acetabular retroversion on arthroscopic outcomes when diagnosed via 2D imaging, contrasting it with the higher accuracy of 3D imaging. It notes that while 2D radiographs are useful for preliminary evaluation, 3D quantification provides a more precise assessment of version. The clinical implication is that surgeons should utilize 3D imaging alongside clinical exams when considering isolated hip arthroscopy for patients with suspected acetabular retroversion.

Geriatric Hip Fracture: Outcomes and Management (4)¶

7. Nguyen TTB, Tran QS, Nguyen TT, et al. Quality of life trajectories following geriatric hip fracture surgery: a growth mixture modelling approach. Journal of Orthopaedic Surgery and Research 2026. doi:10.1186/s13018-026-06664-z

This longitudinal study utilized growth mixture modeling to identify distinct quality of life trajectories over one year following geriatric hip fracture surgery. It revealed four distinct recovery patterns, with baseline characteristics such as age and comorbidities predicting membership in lower-quality-of-life trajectory groups. These insights enable the development of personalized rehabilitation strategies targeting specific patient subgroups to improve long-term recovery outcomes.

9. Jia M, Ding C, Zhang J, et al. The effect of fully threaded cannulated screws in sliding fixation of femoral neck fractures: a retrospective study. Journal of Orthopaedic Surgery and Research 2026. doi:10.1186/s13018-025-06611-4

This retrospective study compared fully-threaded cannulated screws (FCS) against partially-threaded screws (PCS) for sliding fixation in 141 femoral neck fracture patients. The research found that FCS significantly reduced the incidence of postoperative complications, including femoral neck shortening and osteonecrosis, compared to PCS. These findings suggest that FCS may offer superior biomechanical stability and clinical outcomes for femoral neck fracture fixation.

12. Cheong T, Heng C, Wong MK. Is the tip-apex distance a reliable predictor of implant failure in surgical fixation of femoral neck fractures with the synthes femoral neck system device?. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-025-09429-7

This study assessed the reliability of the tip-apex distance (TAD) as a predictor for implant failure in femoral neck fractures treated with the Synthes Femoral Neck System. The research likely analyzed whether the specific mechanics of this device alter the traditional TAD failure thresholds established for cannulated screws. Understanding this relationship is crucial for optimizing fixation strategies and preventing hardware failure in femoral neck fractures.

23. Mazarello Paes V, Ting A, Paes MVI, et al. What is the association between time to surgery and patient outcome after hip fracture?. The Bone & Joint Journal 2026. doi:10.1302/0301-620x.108b1.bjj-2025-0035.r1

This systematic review investigated the association between time to surgery and patient outcomes following hip fractures across 139 studies involving over four million patients. The analysis found that while surgery within 48 hours is a common performance indicator, the definition of time to surgery varied widely, preventing a formal meta-analysis. The clinical implication is that while early surgery is generally favored, the lack of standardized definitions complicates the establishment of a universal optimal timeframe for all healthcare systems.

Total Hip Arthroplasty: Bearings, Infection, and Demographics (4)¶

1. Ishida T, Takahashi Y, Tateiwa T, et al. Progressive wear divergence beyond 10 years in ceramic- vs. metal-on-polyethylene bearings: the 25-year impact of zirconia degradation in total hip arthroplasty. Journal of Orthopaedic Surgery and Research 2026. doi:10.1186/s13018-026-06681-y

This study evaluated long-term wear divergence between ceramic-on-polyethylene and metal-on-polyethylene bearings in total hip arthroplasty over a 25-year period. It found that zirconia degradation leads to progressive wear divergence beyond 10 years, significantly impacting implant longevity. These findings suggest that ceramic bearings may require closer long-term monitoring or alternative materials for patients expected to survive beyond two decades post-surgery.

2. Becerra M, Cifuentes E, Becerra C, et al. Hip offset parameters and functional outcomes following total hip arthroplasty: association with performance, strength, and patient-reported outcomes. Journal of Orthopaedic Surgery and Research 2026. doi:10.1186/s13018-025-06641-y

Researchers analyzed the relationship between hip offset parameters and functional outcomes, including strength and patient-reported metrics, following total hip arthroplasty. The study identified specific correlations between restored hip offset and improved functional performance and patient satisfaction. Clinically, this supports the importance of precise surgical restoration of hip offset to optimize postoperative recovery and patient outcomes.

5. Yoshimoto Y, Kajino Y, Inoue D, et al. Is there a true match in the femoral medullary cavity between neutral and flexion alignment of the stem on a female (Asian) population?. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-025-09466-2

This study investigated the anatomical match between femoral medullary cavities and stem alignment (neutral vs. flexion) in a female Asian population. It determined that flexion alignment provides a significantly better fit within the medullary cavity compared to neutral alignment for this specific demographic. These results suggest that adjusting stem alignment to a flexed position may improve implant stability and reduce the risk of intraoperative complications in Asian female patients.

10. Kao P, Hsu C, Hsu AHS, et al. The effect of extended postoperative oral antibiotic prophylaxis on the reinfection risk following two-stage exchange arthroplasty for hip and knee periprosthetic joint infection: a systematic review and meta-analysis. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-025-09410-4

A systematic review and meta-analysis evaluated the impact of extended postoperative oral antibiotic prophylaxis (EPOAP) on reinfection rates following two-stage exchange arthroplasty for periprosthetic joint infections. The analysis of 486 knees and 444 hips demonstrated that EPOAP significantly reduced the risk of reinfection compared to standard protocols. Clinically, this supports the adoption of extended antibiotic courses to improve infection-free survival in complex joint revision cases.

Pediatric Hip, Tumors, and Special Populations (5)¶

6. Feng H, Qiu X, Chen J, et al. Ultrasonographic features and recurrence risk of transient synovitis of the hip in children: a retrospective study. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-025-09474-2

A retrospective study examined ultrasonographic features and their association with recurrence risk in children diagnosed with transient synovitis of the hip. The findings identified specific sonographic markers, such as effusion size and synovial thickening, that correlate with a higher likelihood of recurrence. Clinicians can utilize these ultrasonographic indicators to stratify recurrence risk and tailor follow-up intensity for pediatric patients.

11. Li J, Cai D, Yang Z, et al. Denosumab combined with curettage after surgical dislocation of the hip in the treatment of giant cell tumors of bone in the femoral head and neck region: a single-center retrospective study. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-025-09451-9

This single-center retrospective study investigated the efficacy of combining denosumab with curettage after surgical dislocation for treating giant cell tumors in the femoral head and neck. While specific results are not provided in the abstract, the study aims to determine if this multimodal approach improves local control and reduces recurrence rates. The findings could influence surgical protocols for managing these aggressive bone tumors in critical weight-bearing regions.

14. Fong S, Kodra J, Girardi K, et al. Patients With Preoperative Fibromyalgia Undergoing Hip Arthroscopy Demonstrated Increased Odds of Postoperative Opioid Prescriptions Within 90 Days and 1 Year but Similar 2‐Year Reoperation Rates Compared to Matched Controls. Arthroscopy 2026. doi:10.1002/arj.70003

A retrospective cohort study compared postoperative outcomes in patients with preoperative fibromyalgia versus matched controls undergoing hip arthroscopy. Patients with fibromyalgia demonstrated significantly higher odds of receiving opioid prescriptions within 90 days and one year, despite having similar reoperation rates at two years. This highlights the need for enhanced pain management protocols and opioid stewardship for fibromyalgia patients undergoing orthopedic procedures.

20. Nho SJ, Sparks CA, Monty TL. Editorial Commentary : When Global Pain Meets Local Repair: Fibromyalgia and Hip Arthroscopy Demands Multimodal Care. Arthroscopy 2026. doi:10.1002/arj.70036

This commentary reviews the limited literature on hip arthroscopy outcomes for patients with fibromyalgia, noting promising early results that do not contraindicate the procedure. However, it emphasizes that successful management requires careful expectation setting and a multidisciplinary approach to address complex pain regimens. The clinical implication is that while surgery can be beneficial, optimizing outcomes demands comprehensive, multimodal care rather than surgical intervention alone.

25. El Ghoneimy AM, Morsy AS, Kamal M. Comparison of functional outcome and revision-free survivorship of proximal femoral megaprosthesis in paediatric patients with open versus closed triradiate physes. The Bone & Joint Journal 2026. doi:10.1302/0301-620x.108b1.bjj-2025-0161.r2

This retrospective study compared functional outcomes and revision-free survival in pediatric patients receiving proximal femoral megaprosthesis based on whether their triradiate physis was open or closed at the time of surgery. The key finding indicates that children with open physes face a significantly higher risk of acetabular dysplasia and hip subluxation compared to those with closed physes. Clinically, this suggests that the status of the triradiate physis is a critical factor in surgical planning and counseling regarding the long-term stability of hip reconstructions in children.

Data Quality and Epidemiology in Hip Care (3)¶

3. Christofides I, Vavliakis I, de Klerk HH, et al. Prevalence of hip and knee osteoarthritis in Europe: a systematic review and meta-analysis. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-026-09493-7

This systematic review and meta-analysis quantified the prevalence of hip and knee osteoarthritis across European populations. The analysis revealed significant regional variations and high overall disease burdens, highlighting the substantial public health challenge posed by these conditions. These data provide a critical evidence base for healthcare planning and resource allocation to address the growing demand for osteoarthritis management in Europe.

8. Yin R, Soh ZLH, Qin VM, et al. What patient reported outcome measures are used in clinical trials in hip fracture? A systematic mapping review. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-025-09456-4

This systematic mapping review analyzed the usage, validity, and trends of patient-reported outcome measures (PROMs) in hip fracture clinical trials from 2010 to 2025. It found an increasing trend in PROM adoption, with the Harris hip score and EuroQoL-5D being the most common instruments, though validity evidence is often lacking. The review highlights a need for standardized, validated PROMs in future trials to ensure robust assessment of patient-centered outcomes.

26. Kornvig S, Jakobsen TH, Gromov K, et al. Patient-reported outcomes may be ‘missing not at random’ in hip and knee arthroplasty. The Bone & Joint Journal 2026. doi:10.1302/0301-620x.108b1.bjj-2025-0683.r1

This population-based cohort study investigated the mechanism of missing patient-reported outcome measures (PROMs) in over 11,000 hip and knee arthroplasty patients by comparing responders and non-responders across demographics, mortality, and revision risks. The analysis revealed that missing PROM data is not random, as non-responders exhibited significantly higher risks of death and revision surgery compared to those who completed the surveys. These findings imply that standard statistical methods assuming missing data is random may underestimate poor outcomes, necessitating more robust handling of missing data in arthroplasty registries.

Intertrochanteric Fractures and Implant Design (1)¶

4. Box MW, O’Connor KP, Puga TB, et al. Comparison of integrated dual-lag screw versus single lag screw cephalomedullary nails for intertrochanteric femoral fractures: a systematic review and meta-analysis. Journal of Orthopaedic Surgery and Research 2026. doi:10.1186/s13018-025-06642-x

A systematic review and meta-analysis compared the clinical outcomes of integrated dual-lag screw versus single lag screw cephalomedullary nails for intertrochanteric femoral fractures. The review found that the dual-lag screw design offers superior biomechanical stability and reduced failure rates compared to the single screw configuration. Consequently, the dual-lag screw system may be preferred for high-risk fractures to enhance fixation stability and reduce reoperation rates.

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