Comparative Effects of Dynamic Stability Drills and Plyometric Training After Anterior Crutiate Ligament Reconstruction

NCT07578935 | Recruiting

• 1 other identifier: REC/RCR&AHS/25/0148
• Study Type: interventional
• Target: 48
• Locations: 1 country
• Sites: 1

Brief Summary

Terminal Extension lag (TEL) is a condition that develops when active range of extension is smaller than passive range; frequently noticed in post-traumatic knees after injuries and Anterior Cruciate ligament reconstruction surgery. TEL is typically seen within 6 to 12 weeks after ACL reconstruction. Anterior cruciate ligament reconstruction surgery is a critical surgical intervention used to repair ACL tear; which is common among those who are engaged in physical demanding activities and Sportsmen. In the initial days following surgery terminal extension lag affects up to 10 to 35% of individuals. ACL is expectational because it's not just a static stabilizer of knee but also transfers proprioceptive information to the brain so to improve joint's dynamics. This study aims to compare effects of Dynamic Stability Drills (DSD) and Plyometric Training (PT) in reducing terminal knee extension lag in post-ACL reconstruction patients. This study will be a Randomized Clinical Trail and will be conducted in Physiotherapy Department of Bethania Hospital Sialkot. Non-Probability Convenience Sampling will be used to collect data. Total of 48 Participants of the age 20 to 40 years with terminal extension lag of moderate lag stage (typically 9-12 weeks post-op with 5-10° lag) will be selected as sample size. An informed consent will be taken prior study from all the subjects. Outcomes measure will be included Numerical Pain Rating Scale (NPRS) for pain, Single Leg Hope Test and Y Balance Test (Y-BAL) for Dynamic Stability, Universal Goniometer (UG) for Range of Motion, Sphygmomanometer for Knee Strength, International Knee Documentation Committee scores, (IKDC) for Knee function and Limb Symmetry Index (LSI) Calculations. Subjects will be divided into two groups by random number generator table. Both groups will receive a standard physiotherapy protocols which will include: Hot pack , TENS , Mobilizations, Stretching and Strengthening. Group A will receive Dynamic Stability Drills and Group B will receive Plyometric Training along with conventional treatment. Patient will come 3 time a week and data will be recollected after 6 weeks. Data will be analyzed by SPSS version 25.

Conditions

Sports Physical Therapy

Keywords

Plyometric Exercise; Terminal Extension Lag

Outcome Measures

Primary Outcomes (2)

• Single leg hope test

  Jumping as far as you can on one leg while maintaining your balance and landing firmly is the goal of this challenge. The starting line and the landing leg's heel are used to estimate the distance

  6th week

• Limb Symmetry Index (LSI) Calculation

  the Limb Symmetry Index (LSI) calculates the performance difference between two limbs, typically the affected and unaffected limbs following an accident; by dividing the score of the injured limb by the score of the unaffected limb and multiplying the result by 100. It's represented in percentage

  6th week

Study Arms (2)

Dynamic Stability Drills

EXPERIMENTAL

Other: Dynamic Stability Drills

Plyometric Training

ACTIVE COMPARATOR

Other: Plyometric Training

Interventions

Plyometric Training OTHER

Weak 1-2: Four types of plyometrics: A) bilateral off-set (alternating box jump) B) bilateral asymmetrical (split jump) C) bilateral symmetrical (30 cm drop jump) and D) unilateral (30 cm drop jump(13) Weak 3-4: 1. A lateral jump from left to right limb (A) with landing (B) and immediate jump back to the right limb (C) as opposed to just landing in which occurs during Stage 2(13). 2. Images of a countermovement or squat jump in place with maximal height. The removal of the box results in higher landing forces due to landing from a higher height(13

Plyometric Training

Dynamic Stability Drills OTHER

Weak 1-2 Stability Foundation Weight shifts (anterior/posterior, lateral, Double-leg stance on foam surface, Eyes-closed balance (double-leg), Isometric quad \& hamstring contractions, Wall sits + small ball between knees (activate adductors \& quads)Weeks 3-4: Progressive Dynamic Stability, Single-leg stance on foam, Thera-band perturbation drills (knees and hips), TKE (Terminal Knee Extension) on unstable surfaces, Step-downs from 6-inch height (with control),Lateral step-overs (slow \& controlled)

Dynamic Stability Drills

Eligibility Criteria

• Age: 20 Years - 40 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• Age 20-40
• Both Genders (male \& female)
• History of Anterior Cruciate Ligament Reconstruction (ACLR) between 1-3 years
• Moderate stage (5 to 10 ˚) of terminal extension lag after ACL reconstruction

You may not qualify if:

• Any other previously serious knee pain and/or surgery limiting of knee range of motion(2)
• Any traumatic conditions around the knee, or any infectious or tumors conditions i.e.
• meniscus injury, fracture, dislocation or osteochondral injury
• Pregnancy, any recently underwent abdominal and back surgery
• BMI ≥ 30 kg/m²
• Any systemic and/or neurological illness, rheumatoid arthritis, osteomyelitis, any neurological disorders, spinal disorders, obesity, Dementia, inflammatory conditions like Ankylosing spondylitis, Rheumatoid arthritis, Osteoporosis, Diabetic neuropathy,
• Red flags such as Trauma, Cancer, Constitutional Symptoms (Fever, Malaise, Weight Loss), Recent Infection, Mental retardation, Hemiparesis / Hemiplegia
• Subjects with presence of any fractures
• Heart/diabetic patients

Sponsors & Collaborators

• Riphah International University: lead

Study Sites (1)

Rabiya Noor

Lahore, Punjab Province, 54000, Pakistan

RECRUITING

Related Publications (1)

• Lephart SM, Pincivero DM, Giraldo JL, Fu FH. The role of proprioception in the management and rehabilitation of athletic injuries. Am J Sports Med. 1997 Jan-Feb;25(1):130-7. doi: 10.1177/036354659702500126.

  PMID: 9006708 BACKGROUND

MeSH Terms

Interventions

Plyometric Exercise

Intervention Hierarchy (Ancestors)

Exercise Therapy; Rehabilitation; Aftercare; Continuity of Patient Care; Patient Care; Therapeutics; Physical Therapy Modalities; Physical Conditioning, Human; Exercise; Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Study Officials

• Rabiya Noor, PhD

  Riphah International University

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Rabiya Noor, PhD

CONTACT

0334 4355660; rabiya.noor@riphah.edu.pk

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 5, 2026
• First Posted: May 11, 2026
• Study Start: January 15, 2026
• Primary Completion: May 15, 2026
• Study Completion (Estimated): June 15, 2026
• Last Updated: May 11, 2026

Record last verified: 2026-05

Data Sharing

• IPD Sharing: Will not share

Locations

PA (1)