Isokinetic muscle strength testing and multi-joint muscle strength balance reconstruction system (Isokinetic Rehabilitation System)

Gold Standard of Sports Medicine

National Medical Products Administration Class II Medical Device Registration Certificate National Medical Device Injection 20172192084 (Biodex System); International Federation of Sports Medicine (FIMS) Technical Gold Standard · Sports Medicine Gold Standard/National Major Technical Plan

Using the internationally recognized isokinetic muscle strength testing system (such as Biodex / Cybex system), under the premise of constant preset angular velocity, the resistance is adaptively matched in real time with the patient's limb muscle output, providing efficient and safe training of 'maximum resistance within the full range of joint motion'. Accurately and quantitatively test the peak torque (PT) and antagonist muscle ratio (H/Q ratio) of knee, shoulder, ankle and other joint flexor and extensor muscle groups to eliminate the hidden dangers of postoperative recurrence of sports injuries and joint instability.

Key clinical breakthroughs benefit

Thigh flexor/extensor peak moment ratio (H/Q ratio) returned to the gold standard (0.60-0.70)

Control group: High recurrence rate / severe trauma

Evidence and recommendation levels

State Drug Administration Class II medical device registration certificate National Medical Device Injection 20172192084 (Biodex System); International Federation of Sports Medicine (FIMS) technical gold standard

Institute of Sports Medicine of the State Sports General Administration (Beijing Sports Trauma Hospital)

Treatment cycle and trauma

2-4 days

Computerized isokinetic multi-angle initial muscle strength evaluation and muscle strength imbalance report for 1 day; concentric/eccentric multi-mode adaptive muscle strength closed-loop training for 15-20 consecutive days; return-to-sport test (RTS) certification report

International comparison of cost-effectiveness

Approximately 60% ~ 85% cost savings

Supports direct payment under international commercial insurance

Mechanism of Action and Technical Advantages

Isokinetic muscle strength test and multi-joint muscle balance reconstruction system core technical principles and clinical pathways

1

Resistance safety and adaptability: The resistance of the isokinetic system is completely determined by the patient's own real-time output force. If the patient feels pain and the force is slightly reduced, the resistance will immediately weaken by the same amount, which is absolutely safe and eliminates secondary injuries

2

Quantitative objectivity and return-to-sport standards: The computer automatically generates a multi-axis curve with an accuracy of 0.1 N·m, accurately providing peak torque (PT), total work, explosive force and bilateral limb symmetry rate, objectively guiding scientific return to the game

3

Single treatment service charge: China's national sports medicine center and high-end special needs clinics provide a complete set of isokinetic and refined training programs for only ¥5,000 - ¥11,000 (approximately $700 - $1,600)

Precise target audience and clinical indications

Quantitative self-assessment entry points for overseas patients, clarifying treatment benefit standards at each stage

Functional recovery and return-to-sport evaluation after anterior cruciate ligament (ACL) reconstruction, rotator cuff injury repair, meniscal suturing, total knee/total hip replacement and severe patellofemoral chondromalacia

Athletes and sports enthusiasts eager to safely return to high-intensity sports after joint ligament surgery; patients with long-term compensatory stress on the lower limbs that cause severe wear and tear on the contralateral joint; patients with chronic patellofemoral pain syndrome

Strict Exclusion Criteria and Contraindications

• ✕A joint fracture that has not healed firmly or has severe osteoporosis around the joint; acute traumatic synovitis accompanied by massive blood and fluid accumulation in the joint cavity; joint mobility that is severely limited and unable to reach the preset angle for the test

Registered clinical data versus real-world efficacy

The American Journal of Sports Medicine: Isokinetic Muscle Strength Ratios and Risk of Second ACL Injury in Athletes Returning to Sports

Key clinical breakthroughs benefit

Thigh flexor/extensor peak moment ratio (H/Q ratio) returned to the gold standard (0.60-0.70)

Disease Control Rate (DCR)

Significant benefits have been gained

Clinical evidence level

State Drug Administration Class II medical device registration certificate National Medical Device Injection 20172192084 (Biodex System); International Federation of Sports Medicine (FIMS) technical gold standard

Safety and adverse reaction profile: Thigh flexor/extensor peak moment ratio (H/Q ratio) has returned to the gold standard (0.60-0.70); the muscle strength symmetry index (LSI) of the healthy and affected side has increased to more than 92%, preventing secondary ligament tear

Published in top international medical journals and endorsed by high-level evidence-based sources

Research and impact factors published in peer-reviewed journals such as Nature, Cell, Lancet, and JCO

The American Journal of Sports Medicine6.2

Academic team from the National Medical Center

The American Journal of Sports Medicine: Isokinetic Muscle Strength Ratios and Risk of Second ACL Injury in Athletes Returning to Sports

Citation: PMID: 31855078; DOI: 10.1177/0363546519889345 (IF: 6.2)

PubMed authoritative searchDOI original text

Arthroscopy4.4

Academic team from the National Medical Center

Arthroscopy: The Journal of Arthroscopic & Related Surgery: Objective Isokinetic Testing Criteria for Return to Sport After ACL Reconstruction

Citation: PMID: 32417124; DOI: 10.1016/j.arthro.2020.05.012 (IF: 4.4)

PubMed authoritative searchDOI original text

Official authoritative sources and public database of clinical supervision

Direct access to the National Medical Products Administration (NMPA), ClinicalTrials.gov, PubMed, and academic guidelines for public verification

PMID: 31855078; DOI: 10.1177/0363546519889345 (IF: 6.2)

The American Journal of Sports Medicine: Isokinetic Muscle Strength Ratios and Risk of Second ACL Injury in Athletes Returning to Sports

PMID: 32417124; DOI: 10.1016/j.arthro.2020.05.012 (IF: 4.4)

Arthroscopy: The Journal of Arthroscopic & Related Surgery: Objective Isokinetic Testing Criteria for Return to Sport After ACL Reconstruction

Tinyun Medical Development [2019] No. 18

Institute of Sports Medicine of the State Sports General Administration: Standards for Isokinetic Muscle Strength Assessment and Rehabilitation of Sports Injuries for Excellent Athletes

Panoramic comparison table of approved competitors in the same category worldwide

Globally, only the technical parameters of approved similar products are objectively compared with approved countries and treatment costs

Technology / Procedure / Device Name	Research and development institutions	Mechanism Principle / Platform Type	Main clinical indications	Approved regions and years	International reference fees
Isokinetic Muscle Strength Testing and Multi-Joint Muscle Strength Balance Reconstruction SystemThis plan	China's top specialized medical center	Resistance Safety Adaptability	The resistance of the isokinetic system is completely determined by the patient's own real-time output force. When the patient feels pain and the force is slightly reduced, the resistance immediately weakens by the same amount, which is absolutely safe to prevent secondary injuries	Clinical centers in China and internationally2024-2026	¥5,000 - ¥11,000 (approximately $700 - $1,600, based on the standard 15-20 times multi-joint isokinetic assessment and muscle strength reconstruction cycle)
Isokinetic Muscle Strength Testing and Multi-Joint Muscle Strength Balance Reconstruction System	China's top specialized medical center	Quantitative Objectivity and Return-to-Sport Criteria	The computer automatically generates a multi-axis curve with an accuracy of 0.1 N·m, accurately providing peak torque (PT), total work, explosive force and bilateral limb symmetry, objectively guiding scientific return to the game	Clinical centers in China and internationally2024-2026	¥5,000 - ¥11,000 (approximately $700 - $1,600, based on the standard 15-20 times multi-joint isokinetic assessment and muscle strength reconstruction cycle)
Isokinetic Muscle Strength Testing and Multi-Joint Muscle Strength Balance Reconstruction System	China's top specialized medical center	Single treatment service fee	China's national sports medicine center and high-end special needs clinics provide a full set of isokinetic refined training programs for only ¥5,000 - ¥11,000 (approximately $700 - $1,600)	Clinical centers in China and internationally2024-2026	¥5,000 - ¥11,000 (approximately $700 - $1,600, based on the standard 15-20 times multi-joint isokinetic assessment and muscle strength reconstruction cycle)

Real-world typical cases and treatment outcomes

Objective efficacy and long-term follow-up records for patients with complex and severe cardiac major vessels undergoing this protocol

Baseline patient profile

A 23-year-old college semi-professional football player suffered a complete rupture of the anterior cruciate ligament of his right knee and a bucket-handle tear of the medial meniscus during a game. He underwent autologous hamstring tendon reconstruction at the 16th week. Although he was able to jog, the patient felt that his right knee was weak and he was afraid to change direction and speed with one leg. The difference in thigh circumference between the healthy side and the affected side was 4.0cm, and he was extremely afraid of being injured again.

Significant clinical remission and functional reconstruction

Previous treatment history and treatment challenges:

The patient is eager to return to the college football league, but manual examination cannot accurately determine deep muscle weakness, and the risk of secondary rupture after blindly returning to the field is extremely high.

Specific implementation path of this plan:

Received a comprehensive evaluation of the Biodex multi-joint isokinetic system at the Sports Medicine Center of Huashan Hospital and the Joint Rehabilitation Department of Zen Medicine. The initial test showed that the peak torque (PT) of the right knee extensor muscles was only 54% of that of the healthy side, and the flexor-extensor muscle strength ratio (H/Q) was as low as 0.42 (severe imbalance). Based on this, the team developed a tailor-made 'isokinetic concentric-eccentric combined muscle strength symmetry reshaping program', which included isokinetic and high-resistance closed-loop training three times a week, focusing on strengthening the eccentric contraction and braking ability of the affected hamstring muscles, which lasted for 4 weeks.

Objective efficacy and outcome records:

After 4 weeks of intensive training, the circumference of the right thigh muscle increased by 3.2cm; the retest of the isokinetic muscle strength index showed that the muscle strength symmetry index (LSI) of the healthy and affected sides increased to 94.2%, and the H/Q ratio was corrected to the gold standard of 0.65. The patient passed a full set of Hop Test jumping and balance stability tests, successfully returned to the starting lineup of the college league 2 months after discharge, and performed extremely well in high-intensity change of direction sprints throughout the field.

Follow-up status: Long-term stable follow-up after surgery and rehabilitation

Officially undertook tertiary A hospital

Chinese Olympic National Team Medical Support Base / Palace of Sports Medicine and Rehabilitation

Institute of Sports Medicine of the State Sports General Administration (Beijing Sports Trauma Hospital)

Chinese Olympic National Team Medical Support Base / Palace of Sports Medicine and Rehabilitation

Professor Li Guoping / Professor Yan Cheng

National Clinical Research Center for Geriatric Diseases / International Society of Arthroscopy, Knee, Orthopedics and Sports Medicine (ISAKOS) Global Center

Huashan Hospital Affiliated to Fudan University (Department of Sports Medicine)

National Clinical Research Center for Geriatric Diseases / International Society of Arthroscopy, Knee, Orthopedics and Sports Medicine (ISAKOS) Global Center

Professor Chen Shiyi / Professor Hua Yinghui

National Sports Medicine Center

Peking University Third Hospital (Institute of Sports Medicine)

National Sports Medicine Center

Olympic national team support experts and isokinetic muscle strength precision rehabilitation team

List of necessary medical records before travel:

•Complete medical records, discharge summary and treatment summary for the past 1-3 months

•High-resolution DICOM format image master (CT / MRI / DSA / PET-CT)

•Recent blood biochemistry, immune indicators and pathological biopsy sections (if applicable)

•Previous surgical records and key medication details